Re: Displaying images of equipment and results
I tend to agree with you, Peter.? I am on Facebook but I don't
feel I understand how to operate it and I don't get any sort of
automatic notification of activity on either of my accounts
there.? Whereas I feel at home here and I see posts every day
automatically from all my accounts.? I'm not sure Facebook
offers anything that groups.io doesn't, but that statement may
just display my ignorance of Facebook.
Whether Facebook or groups.io will survive longer into the
future, who knows....
My 2p worth...
Peter
On 19/11/2019 12:11, peter gillette
wrote:
toggle quoted message
Show quoted text
Hi Steve,
??? I'm sure I'm missing out by not, but I just don't have the
time. I get what I can from here, first thing in the morning,
and then I'm out. Maybe in a year or two, when my life calms
down some, that could change, but meanwhile, I'd like to
encourage people to continue to use this format for sharing,
too.
??? ??? ??? ??? ??? ??? ??? ??? ??? -P-
On 11/19/2019 6:32 AM, Dr Steve
Wainwright wrote:
Hi,
I would like to encourage everyone to join the QCUIAG Facebook
group even if you use Facebook for no other purpose.?
There you will be able to display directly, your results, and
be able to engage with other members in discussion about yours
and their work.
Clear skies
Steve
PS Many people have a negative reaction to Facebook in
general, myself included. However, it does provide a suitable
and easy forum for the display and discussion of QCUIAG's
work. Moreover, there is absolutely no need to engage in any
other Facebook activities, so why not?
|
Re: Displaying images of equipment and results
Hi,
Facebook can be allowed to send notifications but I don't allow it. I just log in when I want to and see if anything has been posted. It is not hard to use, which is why it is so popular. I don't like FB very much as a social medium, but it is a superb platform for sharing results and discussing them.
Whether QCUIAG will survive in any form remains to be seen. I don't think that the signs are very good, but at least it has a chance for a while.
Regards
Steve
|
Re: Displaying images of equipment and results
Hi Peter,
??? Have you looked any further into the Canon Powershot, as I
mentioned earlier? I really thought it fit well into this group, but
perhaps not, for some reason. Any ideas, as to why there's been
virtually no response? Is there just no one left?
??? ??? ??? ??? ??? ??? ??? ??? ??? -P-
On 11/19/2019 8:44 AM, P H LLOYD via
Groups.Io wrote:
toggle quoted message
Show quoted text
I tend to agree with you, Peter.? I am on Facebook but I
don't feel I understand how to operate it and I don't get any
sort of automatic notification of activity on either of my
accounts there.? Whereas I feel at home here and I see posts
every day automatically from all my accounts.? I'm not sure
Facebook offers anything that groups.io doesn't, but that
statement may just display my ignorance of Facebook.
Whether Facebook or groups.io will survive longer into the
future, who knows....
My 2p worth...
Peter
On 19/11/2019 12:11, peter gillette
wrote:
Hi Steve,
??? I'm sure I'm missing out by not, but I just don't have the
time. I get what I can from here, first thing in the morning,
and then I'm out. Maybe in a year or two, when my life calms
down some, that could change, but meanwhile, I'd like to
encourage people to continue to use this format for sharing,
too.
??? ??? ??? ??? ??? ??? ??? ??? ??? -P-
On 11/19/2019 6:32 AM, Dr Steve
Wainwright wrote:
Hi,
I would like to encourage everyone to join the QCUIAG
Facebook group even if you use Facebook for no
other purpose.?
There you will be able to display directly, your results,
and be able to engage with other members in discussion about
yours and their work.
Clear skies
Steve
PS Many people have a negative reaction to Facebook in
general, myself included. However, it does provide a
suitable and easy forum for the display and discussion of
QCUIAG's work. Moreover, there is absolutely no need to
engage in any other Facebook activities, so why not?
|
Re: Displaying images of equipment and results
Hi, It is very suitable for this group. We are trying to regroup and time will be needed to see if we are viable. Pictures and results will help with any topic. Best regards Steve Dr. S.J. Wainwright
Sent from Android
Hi Peter,
??? Have you looked any further into the Canon Powershot, as I
mentioned earlier? I really thought it fit well into this group, but
perhaps not, for some reason. Any ideas, as to why there's been
virtually no response? Is there just no one left?
??? ??? ??? ??? ??? ??? ??? ??? ??? -P-
On 11/19/2019 8:44 AM, P H LLOYD via
Groups.Io wrote:
I tend to agree with you, Peter.? I am on Facebook but I
don't feel I understand how to operate it and I don't get any
sort of automatic notification of activity on either of my
accounts there.? Whereas I feel at home here and I see posts
every day automatically from all my accounts.? I'm not sure
Facebook offers anything that doesn't, but that
statement may just display my ignorance of Facebook.
Whether Facebook or will survive longer into the
future, who knows....
My 2p worth...
Peter
On 19/11/2019 12:11, peter gillette
wrote:
Hi Steve,
??? I'm sure I'm missing out by not, but I just don't have the
time. I get what I can from here, first thing in the morning,
and then I'm out. Maybe in a year or two, when my life calms
down some, that could change, but meanwhile, I'd like to
encourage people to continue to use this format for sharing,
too.
??? ??? ??? ??? ??? ??? ??? ??? ??? -P-
On 11/19/2019 6:32 AM, Dr Steve
Wainwright wrote:
Hi,
I would like to encourage everyone to join the QCUIAG
Facebook group even if you use Facebook for no
other purpose.?
There you will be able to display directly, your results,
and be able to engage with other members in discussion about
yours and their work.
Clear skies
Steve
PS Many people have a negative reaction to Facebook in
general, myself included. However, it does provide a
suitable and easy forum for the display and discussion of
QCUIAG's work. Moreover, there is absolutely no need to
engage in any other Facebook activities, so why not?
|
Re: Displaying images of equipment and results
Hi Steve, et al,
??? Fair enough. I hope we are, as this has been such a focal point
for innovation over the years!
??? As to pictures and results, I'm not a full-on expert in
astro-imaging, but have worked with many different systems, with
varying results, thru the years, and the Canon Powershot, with its
dedicated lens system, has been my go-to for the past three years.
Here's a sample, by no means my best, but my most recent. Its a
portion of the California Nebula. This photo is the result of
co-adding three frames, each 3.5 minute exposures at an ISO of 1250,
with the lens set at a 35mm equivalence of 1200mm. The camera is
mounted, piggy-back, on top of an 8"SCT on an equatorial wedge. No
guide system, just on the tracking motors.
??? I'm sure that there are many better photos out there, but most
of them require much core complicated equipment and hours of work at
the computer, neither investment I care to make. So here's the shot.
If there are others out there that are interested in pursuing this
topic further, by all means, speak up!
??? 
??? ??? ??? ??? ??? ??? ??? ??? ??? ??? ??? ??? ??? -P-
On 11/20/2019 2:31 PM, Dr Steve
Wainwright wrote:
toggle quoted message
Show quoted text
Hi,
It is very suitable for this group. We are
trying to regroup and time will be needed to see if we are
viable. Pictures and results will help with any topic.
Best regards
Steve
Dr. S.J.
Wainwright
Sent from Android
Hi Peter,
??? Have you looked any further into the Canon Powershot, as
I mentioned earlier? I really thought it fit well into this
group, but perhaps not, for some reason. Any ideas, as to
why there's been virtually no response? Is there just no one
left?
??? ??? ??? ??? ??? ??? ??? ??? ??? -P-
On 11/19/2019 8:44 AM, P H LLOYD via Groups.Io wrote:
I tend to agree with you, Peter.? I am on Facebook
but I don't feel I understand how to operate it and I
don't get any sort of automatic notification of
activity on either of my accounts there.? Whereas I
feel at home here and I see posts every day
automatically from all my accounts.? I'm not sure
Facebook offers anything that
doesn't, but that statement may just display my
ignorance of Facebook.
Whether Facebook or will survive
longer into the future, who knows....
My 2p worth...
Peter
On 19/11/2019 12:11, peter gillette wrote:
Hi Steve,
??? I'm sure I'm missing out by not, but I just don't
have the time. I get what I can from here, first thing
in the morning, and then I'm out. Maybe in a year or
two, when my life calms down some, that could change,
but meanwhile, I'd like to encourage people to
continue to use this format for sharing, too.
??? ??? ??? ??? ??? ??? ??? ??? ??? -P-
On 11/19/2019 6:32 AM, Dr Steve Wainwright wrote:
Hi,
I would like to encourage everyone to join the
QCUIAG Facebook group even if you use
Facebook for no other purpose.?
There you will be able to display directly, your
results, and be able to engage with other members in
discussion about yours and their work.
Clear skies
Steve
PS Many people have a negative reaction to Facebook
in general, myself included. However, it does
provide a suitable and easy forum for the display
and discussion of QCUIAG's work. Moreover, there is
absolutely no need to engage in any other Facebook
activities, so why not?
|
Re: Displaying images of equipment and results
Hi Peter,
I'm not sure if I am the Peter you are replying to, but I have
not used the Canon Powershot at all.? I think that is the bridge
camera my wife has and I don't think she would welcome me messing
with her camera.? When we both decided to buy bridge cameras I
elected for the Panasonic Lumix F272 because of its greater zoom.?
But to be honest I think that may have been a mistake©¤I think my
wife gets better pictures than I do.? For astronomy I use either
the Canon? 1100D or a modified D600.? I get good results with both
either on an ST80 or an 8-inch Ritchey-Chretien.? I get some
vignetting with the latter but flats seem to sort it out.
Best wishes,
Peter (Lloyd)
On 20/11/2019 18:46, peter gillette
wrote:
toggle quoted message
Show quoted text
Hi Peter,
??? Have you looked any further into the Canon Powershot, as I
mentioned earlier? I really thought it fit well into this group,
but perhaps not, for some reason. Any ideas, as to why there's
been virtually no response? Is there just no one left?
??? ??? ??? ??? ??? ??? ??? ??? ??? -P-
On 11/19/2019 8:44 AM, P H LLOYD via
Groups.Io wrote:
I tend to agree with you, Peter.? I am on Facebook but I
don't feel I understand how to operate it and I don't get
any sort of automatic notification of activity on either of
my accounts there.? Whereas I feel at home here and I see
posts every day automatically from all my accounts.? I'm not
sure Facebook offers anything that groups.io doesn't, but
that statement may just display my ignorance of Facebook.
Whether Facebook or groups.io will survive longer into the
future, who knows....
My 2p worth...
Peter
On 19/11/2019 12:11, peter
gillette wrote:
Hi Steve,
??? I'm sure I'm missing out by not, but I just don't have
the time. I get what I can from here, first thing in the
morning, and then I'm out. Maybe in a year or two, when my
life calms down some, that could change, but meanwhile, I'd
like to encourage people to continue to use this format for
sharing, too.
??? ??? ??? ??? ??? ??? ??? ??? ??? -P-
On 11/19/2019 6:32 AM, Dr Steve
Wainwright wrote:
Hi,
I would like to encourage everyone to join the QCUIAG
Facebook group even if you use Facebook for no
other purpose.?
There you will be able to display directly, your results,
and be able to engage with other members in discussion
about yours and their work.
Clear skies
Steve
PS Many people have a negative reaction to Facebook in
general, myself included. However, it does provide a
suitable and easy forum for the display and discussion of
QCUIAG's work. Moreover, there is absolutely no need to
engage in any other Facebook activities, so why not?
|
Hi everyone -
There was a clear night here in London on Monday - in the early hours it
became even clearer, after the dew froze out I suppose. I was just fooling
about taking the odd snap, but the images of the Flame and HH looked so
promising I buckled down and took matching flats and darks. I think they
turned out quite well, if a bit noisy - 2 mixes in Ha:
brighter version:
dimmer version:
Details:
SW Startravel 150mm F5, 0.8x Orion Imaging Reducer, Atik 460EX mono
Darked and flatted in Dawn, stacked in Registax5, stretching, gamma, other
processing in PSE10
Astronomik Ha filter
3x 600s
1x 300s
2x180s
Total 2460s
Looking at the image of Zeta Orionis, it is not flaring symmetrically about
the centre, so I think collimation of the scope needs a revisit.
On other matters, groups.io seems to work v well, and you don't have to
login to see the traffic. I joined F/B on the strength of the group there,
and it is a pain in the neck. Just getting on board with all the privacy
options and useless knobs and buttons has reduced me to an utter red rage.
So I would be happy to see it go. Either way, I think you should seriously
consider having only a single Qcuiag forum place, otherwise the traffic is
just split needlessly - and checking up on two places is a bit daft.
I am always interested in what people produce with any kind of camera or
scope - the
stuff taken with the 50x zoom machines was seriously eye opening. If you
don't get many replies it is probably that few others are doing the same
thing, and so it is hard to comment usefully from a position of ignorance.
But that isn't because the audience is uninterested.
My 2 pence.
Simon
|
Well, Simon, those are lovely images.? I've never achieved so good.? Well done.
I have? a Panasonic bridge camera with a 60X zoom but have not used it seriously for the skies.? I have been using a Canon 1100D or modified 600D because that is what everyone seems to be using these days (round here anyway) and I am impressed by the results. The format is a bit large for my OTAs but vignetting is not too bad on my RC but is very bad on my LX200 with 0.33 FR.? I like the latter as it gives me f/3.3 which is the best of any optics I have.
I too prefer this platform but it may just be a case of getting used to FB.? Yahoo Groups haven't died totally but are not much use for our purposes, but groups.io was set up to provide what yahoo were losing.? Long may it last but one must admit that FB is prospering in a way Yahoo probably never did.? Access from 'phones being their strong point, but I'm so old I still prefer a proper keyboard on a platform I understand.? Splitting does seem a shame but it seems to be happening....
Best wishes,
Peter
toggle quoted message
Show quoted text
On 21/11/2019 12:32, Simon Fedida wrote: Hi everyone -
There was a clear night here in London on Monday - in the early hours it
became even clearer, after the dew froze out I suppose.? I was just fooling
about taking the odd snap, but the images of the Flame and HH looked so
promising I buckled down and took matching flats and darks.? I think they
turned out quite well, if a bit noisy - 2 mixes in Ha:
brighter version:
dimmer version:
Details:
SW Startravel 150mm F5, 0.8x Orion Imaging Reducer, Atik 460EX mono
Darked and flatted in Dawn, stacked in Registax5, stretching, gamma, other
processing in PSE10
Astronomik Ha filter
3x 600s
1x 300s
2x180s
Total 2460s
Looking at the image of Zeta Orionis, it is not flaring symmetrically about
the centre, so I think collimation of the scope needs a revisit.
On other matters, groups.io seems to work v well, and you don't have to
login to see the traffic.? I joined F/B on the strength of the group there,
and it is a pain in the neck.? Just getting on board with all the privacy
options and useless knobs and buttons has reduced me to an utter red rage.
So I would be happy to see it go.? Either way, I think you should seriously
consider having only a single Qcuiag forum place, otherwise the traffic is
just split needlessly - and checking up on two places is a bit daft.
I am always interested in what people produce with any kind of camera or
scope - the
stuff taken with the 50x zoom machines was seriously eye opening. If you
don't get many replies it is probably that few others are doing the same
thing, and so it is hard to comment usefully from a position of ignorance.
But that isn't because the audience is uninterested.
My 2 pence.
Simon
|
Re: Displaying images of equipment and results
Hi PL,
??? Yes, it is you, to whom I referred.
??? I'd highly recommend that you download the CHDK package, and
promise your wife that you won't mess up any of it, that she'll
always be able to use it in the normal fashion, and that you just
want to try "something". Get yourself a fresh SD card and follow the
install directions, and keep that card for your use of the camera.
The "firmware" stays on the card, and never changes anything in the
original stuff, except when you use that card and go thru a startup
routine. Any time the camera is shut off and restarted, it is back
to "factory" firmware. No harm, no foul,, and, in the meanwhile, a
heck of an imaging system. Maybe you could trade with her???? If you
want to take this topic to a different venue, I'm the moderator of a
groups.io site called Powershotters, and would be all too happy to
invite you over there. Just let me know...
??? ??? ??? ??? ??? ??? ??? ??? ??? ??? -P-
On 11/21/2019 7:16 AM, P H LLOYD via
Groups.Io wrote:
toggle quoted message
Show quoted text
Hi Peter,
I'm not sure if I am the Peter you are replying to, but I have
not used the Canon Powershot at all.? I think that is the bridge
camera my wife has and I don't think she would welcome me
messing with her camera.? When we both decided to buy bridge
cameras I elected for the Panasonic Lumix F272 because of its
greater zoom.? But to be honest I think that may have been a
mistake©¤I think my wife gets better pictures than I do.? For
astronomy I use either the Canon? 1100D or a modified D600.? I
get good results with both either on an ST80 or an 8-inch
Ritchey-Chretien.? I get some vignetting with the latter but
flats seem to sort it out.
Best wishes,
Peter (Lloyd)
On 20/11/2019 18:46, peter gillette
wrote:
Hi Peter,
??? Have you looked any further into the Canon Powershot, as I
mentioned earlier? I really thought it fit well into this group,
but perhaps not, for some reason. Any ideas, as to why there's
been virtually no response? Is there just no one left?
??? ??? ??? ??? ??? ??? ??? ??? ??? -P-
On 11/19/2019 8:44 AM, P H LLOYD
via Groups.Io wrote:
I tend to agree with you, Peter.? I am on Facebook but I
don't feel I understand how to operate it and I don't get
any sort of automatic notification of activity on either
of my accounts there.? Whereas I feel at home here and I
see posts every day automatically from all my accounts.?
I'm not sure Facebook offers anything that groups.io
doesn't, but that statement may just display my ignorance
of Facebook.
Whether Facebook or groups.io will survive longer into
the future, who knows....
My 2p worth...
Peter
On 19/11/2019 12:11, peter
gillette wrote:
Hi Steve,
??? I'm sure I'm missing out by not, but I just don't have
the time. I get what I can from here, first thing in the
morning, and then I'm out. Maybe in a year or two, when my
life calms down some, that could change, but meanwhile,
I'd like to encourage people to continue to use this
format for sharing, too.
??? ??? ??? ??? ??? ??? ??? ??? ??? -P-
On 11/19/2019 6:32 AM, Dr
Steve Wainwright wrote:
Hi,
I would like to encourage everyone to join the QCUIAG
Facebook group even if you use Facebook for no
other purpose.?
There you will be able to display directly, your
results, and be able to engage with other members in
discussion about yours and their work.
Clear skies
Steve
PS Many people have a negative reaction to Facebook in
general, myself included. However, it does provide a
suitable and easy forum for the display and discussion
of QCUIAG's work. Moreover, there is absolutely no need
to engage in any other Facebook activities, so why not?
|
Thanks for the compliment - do you have a link to any of yours ? I toyed
with getting an 8inch RC before the 150 startravel - but felt it was a bit
of jump. So next scope maybe when I have bottomed out on this one.
The new camera (Atik460) has changed my (imaging) life completely (I am now
in debt :) ). But, seriously the 16bit adc depth is v.important. I had the
impression DSLRs were 12 or 14 bit. x4 or x16 more intensity resolution
makes a big difference esp. in light polluted conditions.
I am wondering if we will ever see 24bit or more, though could be an issue
with quantity of electric charge per pixel. The Atik has more resolution
than there are electrons in a full pixel! I would prefer more adc bits than
pixels.
Simon
toggle quoted message
Show quoted text
-----Original Message----- From: P H LLOYD via Groups.Io Sent: Thursday, November 21, 2019 1:53 PM To: [email protected]Subject: Re: [QCUIAG] Horsehead and Flame Well, Simon, those are lovely images. I've never achieved so good. Well done. I have a Panasonic bridge camera with a 60X zoom but have not used it seriously for the skies. I have been using a Canon 1100D or modified 600D because that is what everyone seems to be using these days (round here anyway) and I am impressed by the results. The format is a bit large for my OTAs but vignetting is not too bad on my RC but is very bad on my LX200 with 0.33 FR. I like the latter as it gives me f/3.3 which is the best of any optics I have. I too prefer this platform but it may just be a case of getting used to FB. Yahoo Groups haven't died totally but are not much use for our purposes, but groups.io was set up to provide what yahoo were losing. Long may it last but one must admit that FB is prospering in a way Yahoo probably never did. Access from 'phones being their strong point, but I'm so old I still prefer a proper keyboard on a platform I understand. Splitting does seem a shame but it seems to be happening.... Best wishes, Peter On 21/11/2019 12:32, Simon Fedida wrote: Hi everyone -
There was a clear night here in London on Monday - in the early hours it
became even clearer, after the dew froze out I suppose. I was just
fooling
about taking the odd snap, but the images of the Flame and HH looked so
promising I buckled down and took matching flats and darks. I think they
turned out quite well, if a bit noisy - 2 mixes in Ha:
brighter version:
dimmer version:
Details:
SW Startravel 150mm F5, 0.8x Orion Imaging Reducer, Atik 460EX mono
Darked and flatted in Dawn, stacked in Registax5, stretching, gamma, other
processing in PSE10
Astronomik Ha filter
3x 600s
1x 300s
2x180s
Total 2460s
Looking at the image of Zeta Orionis, it is not flaring symmetrically
about
the centre, so I think collimation of the scope needs a revisit.
On other matters, groups.io seems to work v well, and you don't have to
login to see the traffic. I joined F/B on the strength of the group
there,
and it is a pain in the neck. Just getting on board with all the privacy
options and useless knobs and buttons has reduced me to an utter red rage.
So I would be happy to see it go. Either way, I think you should
seriously
consider having only a single Qcuiag forum place, otherwise the traffic is
just split needlessly - and checking up on two places is a bit daft.
I am always interested in what people produce with any kind of camera or
scope - the
stuff taken with the 50x zoom machines was seriously eye opening. If you
don't get many replies it is probably that few others are doing the same
thing, and so it is hard to comment usefully from a position of ignorance.
But that isn't because the audience is uninterested.
My 2 pence.
Simon
|
Re: Displaying images of equipment and results
Hi Peter G.,
Well thank you for all that.? I will look into CHDK and think
about it and see if it gives me any advantage over the Canons I
have along with computer packages to run them.
Cheers,
Peter L
On 21/11/2019 14:38, peter gillette
wrote:
toggle quoted message
Show quoted text
Hi PL,
??? Yes, it is you, to whom I referred.
??? I'd highly recommend that you download the CHDK package, and
promise your wife that you won't mess up any of it, that she'll
always be able to use it in the normal fashion, and that you just
want to try "something". Get yourself a fresh SD card and follow
the install directions, and keep that card for your use of the
camera. The "firmware" stays on the card, and never changes
anything in the original stuff, except when you use that card and
go thru a startup routine. Any time the camera is shut off and
restarted, it is back to "factory" firmware. No harm, no foul,,
and, in the meanwhile, a heck of an imaging system. Maybe you
could trade with her???? If you want to take this topic to a
different venue, I'm the moderator of a groups.io site called
Powershotters, and would be all too happy to invite you over
there. Just let me know...
??? ??? ??? ??? ??? ??? ??? ??? ??? ??? -P-
On 11/21/2019 7:16 AM, P H LLOYD via
Groups.Io wrote:
Hi Peter,
I'm not sure if I am the Peter you are replying to, but I
have not used the Canon Powershot at all.? I think that is the
bridge camera my wife has and I don't think she would welcome
me messing with her camera.? When we both decided to buy
bridge cameras I elected for the Panasonic Lumix F272 because
of its greater zoom.? But to be honest I think that may have
been a mistake©¤I think my wife gets better pictures than I
do.? For astronomy I use either the Canon? 1100D or a modified
D600.? I get good results with both either on an ST80 or an
8-inch Ritchey-Chretien.? I get some vignetting with the
latter but flats seem to sort it out.
Best wishes,
Peter (Lloyd)
On 20/11/2019 18:46, peter gillette
wrote:
Hi Peter,
??? Have you looked any further into the Canon Powershot, as I
mentioned earlier? I really thought it fit well into this
group, but perhaps not, for some reason. Any ideas, as to why
there's been virtually no response? Is there just no one left?
??? ??? ??? ??? ??? ??? ??? ??? ??? -P-
On 11/19/2019 8:44 AM, P H LLOYD
via Groups.Io wrote:
I tend to agree with you, Peter.? I am on Facebook but
I don't feel I understand how to operate it and I don't
get any sort of automatic notification of activity on
either of my accounts there.? Whereas I feel at home
here and I see posts every day automatically from all my
accounts.? I'm not sure Facebook offers anything that
groups.io doesn't, but that statement may just display
my ignorance of Facebook.
Whether Facebook or groups.io will survive longer into
the future, who knows....
My 2p worth...
Peter
On 19/11/2019 12:11, peter
gillette wrote:
Hi Steve,
??? I'm sure I'm missing out by not, but I just don't
have the time. I get what I can from here, first thing
in the morning, and then I'm out. Maybe in a year or
two, when my life calms down some, that could change,
but meanwhile, I'd like to encourage people to continue
to use this format for sharing, too.
??? ??? ??? ??? ??? ??? ??? ??? ??? -P-
On 11/19/2019 6:32 AM, Dr
Steve Wainwright wrote:
Hi,
I would like to encourage everyone to join the QCUIAG
Facebook group even if you use Facebook for
no other purpose.?
There you will be able to display directly, your
results, and be able to engage with other members in
discussion about yours and their work.
Clear skies
Steve
PS Many people have a negative reaction to Facebook in
general, myself included. However, it does provide a
suitable and easy forum for the display and discussion
of QCUIAG's work. Moreover, there is absolutely no
need to engage in any other Facebook activities, so
why not?
|
Hi Simon,
Well yes indeed.? Everything I have is on my web site www.astrolloyd.uk (click on the astronomy picture) but if you are only interested in the DSLR images that would take some digging out (even for me!) as pictures are sorted by object.
There is one of M42 (click on DSOs, Messier Objects, and M42, it is the bottom one there).? I've taken a few recently of M35 as much to check vignetting on my RC as for the picture but those haven't reached the web page yet.? My page on constellations has pictures taken with a fixed-lens camera.? I have pictures of the transit of Mercury in 2016 taken with a Lumix camera and some taken with a Canon on an ETX125 (link at the top of my Mercury page).
HTH
Peter
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On 21/11/2019 18:58, Simon Fedida wrote: Thanks for the compliment - do you have a link to any of yours ? I toyed
with getting an 8inch RC before the 150 startravel - but felt it was a bit
of jump.? So next scope maybe when I have bottomed out on this one.
The new camera (Atik460) has changed my (imaging) life completely (I am now
in debt :) ).? But, seriously the 16bit adc depth is v.important. I had the
impression DSLRs? were 12 or 14 bit.? x4 or x16 more intensity resolution
makes a big difference esp. in light polluted conditions.
I am wondering if we will ever see 24bit or more, though could be an issue
with quantity of electric charge per pixel.? The Atik has more resolution
than there are electrons in a full pixel!? I would prefer more adc bits than
pixels.
Simon
-----Original Message----- From: P H LLOYD via Groups.Io
Sent: Thursday, November 21, 2019 1:53 PM
To: [email protected]
Subject: Re: [QCUIAG] Horsehead and Flame
Well, Simon, those are lovely images.? I've never achieved so good.
Well done.
I have? a Panasonic bridge camera with a 60X zoom but have not used it
seriously for the skies.? I have been using a Canon 1100D or modified
600D because that is what everyone seems to be using these days (round
here anyway) and I am impressed by the results. The format is a bit
large for my OTAs but vignetting is not too bad on my RC but is very bad
on my LX200 with 0.33 FR.? I like the latter as it gives me f/3.3 which
is the best of any optics I have.
I too prefer this platform but it may just be a case of getting used to
FB.? Yahoo Groups haven't died totally but are not much use for our
purposes, but groups.io was set up to provide what yahoo were losing.
Long may it last but one must admit that FB is prospering in a way Yahoo
probably never did.? Access from 'phones being their strong point, but
I'm so old I still prefer a proper keyboard on a platform I understand.
Splitting does seem a shame but it seems to be happening....
Best wishes,
Peter
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Hi all
Here is another go at M31 with SW 150mm F5, 0.8x Orion Imaging Reducer, Atik
460EX mono. This time experimenting with binning options on the camera -
this process sums the charges in multiple pixels before readout. So for the
same exposure time you get more signal (x4 in 2x2 binning), at the expense
of spatial resolution. This still ends up with a 1.5 Mpixel image, which is
fine - image processing is noticeably more instant in PS at this size than
with the full 6Mpixel image. When trying to choose between the before and
after of a processing operation this adds a lot to useablity.
Here are results from different processing paths. I can't decide which is
best. M31 is a fantastic object to practise on - its big, huge brightness
and contrast range, loads going on. I think the processed images are
getting better, more naturalistic, though the satellites M32/M110 look a
bit hungover in these versions:
darker version:
median process:
and brighter:
Other details:
B filter - 50x120s, 2x2 bin (3/12/19)
G filter - 37x90s, 1x1 bin (19/10/19)
R filter - 14x300s, 2x2 bin (29/11/19)
Total 13,530s 225min 3.8hr
Darked and flatted in Dawn, stacked in Registax5, processed PSE10
Simon
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Hello all,
Year ago I bought a kit to make a cooled ARTEMIS camera (color version).
Was not cheap at all !
I never found the time to construct it and also was puzzled, even blocked by some difficult english terminology for a french guy ...
Could you tell me if it is still interesting to finish the project ?
If no, is this kit any value ?
If yes, ist a shame to leave it like this :)
Would someone have the will, spare time and energy to make this camera completed and working for me (if I send it) ?
Of course I understand I would have to pay something? ...
Thanks !
BR
Sylvain
|
I have been taking high-resolution pictures of the Moon with a Canon 1100D DSLR attached to an RC telescope with great results. However I have noticed that the response of the camera is quite non-linear.? On average, a gamma correction of 0.6 compensates for this curvature but it is an average.
It seems from a limited set of experiments that the response is linear only up to an ADC of about 80 (on a scale of 0-255) when a gamma of only 0.9 seems appropriate and in any case makes very little difference.? Of course this grossly under-exposes the pictures but this can be corrected by stretching the histogram of increasing the contrast in post processing.? ISO seems to make very little difference.
Some examples can be seen in the pictures on my web site.? Go to:
and you will see pictures taken with quite different exposures (look particularly at the one at the bottom, day 18.1 which was taken with a particularly short exposure).? The question arises 'Can the eye detect a change in brightness of 1/80?'? I suspect not.
I am hoping someone here knows a lot more about this sort of thing than I do and can advise.
Clear skies,
Peter
|
Hi, folks,
You probably all know about this, but with all the fine weather we've been having, although twilight has limited my astro imaging, this was in daylight, and helped to relieve the lock down boredom ;-) (Posted on Stargazers Lounge last week.)
On June 19th at approximately 0740 UT (0840 UK Summer time) the Moon occults Venus, which reappears a little over an hour later. Daylight of course, so good clarity required. Probably not too much turbulence that time of day in the UK. Anyway, I decided to do some tests on May 27th. At that time Venus was only 11 degrees from the Sun, the Moon well away at 58 degrees. On occultation day the separation from the Sun will be 22 degrees to the West. Not easy to find, but a binocular sweep might do it - just be very careful not to look at the Sun, 22 degrees is only two fist breadths away at arms length. Safest thing is to hide behind a corner of a house or similar - with the Sun just hidden you've a better chance of finding the Moon.
So this image is obviously a composite, but is to scale (cropped from the originals). I've coloured the Venus background - it was washed out being so close to the Sun. I've rotated both Moon and Venus 180 degrees to approximate their appearance at the time. Canon 700D on TMB refractor at 650 mm focal length, but I will use a longer focal length on the day. Exposure times were different because of the sky background, but of course will be a compromise on the day. Weather permitting - fingers crossed!
But hopefully we will see something like this although the Moon crescent will be slimmer. All being well I'll take images at 15 second intervals and animate both entry and exit. I'm not sure if attachments work on the io group, if not, I'll post the image elsewhere and send a link.
Keep safe, keep well,
Cheers,
Peter
Approx. 55?N, 2?W (Northumberland, UK)
|
Good to hear from you, Peter, and welcome back to a long-standing member of QCUIAG on Yahoo.
I also have been trying? imaging during daylight or almost.? I was fairly successful imaging Mercury recently although the image is not particularly good.? I must admit I didn't try for Venus.? I have been imaging Jupiter and Saturn in very bright skies in the early morning.? I was using IR in order to suppress the blue sky but have realised that that was not necessary for Jupiter and Saturn before sunrise.
The occultation of Venus will be well worth a try.? I shall use a GOTO mount and hope to find Venus with little trouble IF it is not behind my neighbour's tree.? I do take your warning about being too close to the Sun.
Clear skies,
Peter
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On 03/06/2020 11:34, Peter Vasey wrote:
Hi, folks,
You probably all know about this, but with all the fine weather we've been having, although twilight has limited my astro imaging, this was in daylight, and helped to relieve the lock down boredom ? (Posted on Stargazers Lounge last week.)
On June 19th at approximately 0740 UT (0840 UK Summer time) the Moon occults Venus, which reappears a little over an hour later. Daylight of course, so good clarity required.? Probably not too much turbulence that time of day in the UK.? Anyway, I decided to do some tests on May 27th. At that time Venus was only 11 degrees from the Sun, the Moon well away at 58 degrees.? On occultation day the separation from the Sun will be 22 degrees to the West. Not easy to find, but a binocular sweep might do it - just be very careful not to look at the Sun, 22 degrees is only two fist breadths away at arms length.? Safest thing is to hide behind a corner of a house or similar - with the Sun just hidden you've a better chance of finding the Moon.
So this image is obviously a composite, but is to scale (cropped from the originals).? I've coloured the Venus background - it was washed out being so close to the Sun.? I've rotated both Moon and Venus 180 degrees to approximate their appearance at the time. Canon 700D on TMB refractor at 650 mm focal length, but I will use a longer focal length on the day.? Exposure times were different because of the sky background, but of course will be a compromise on the day.? Weather permitting - fingers crossed!
But hopefully we will see something like this although the Moon crescent will be slimmer.? All being well I'll take images at 15 second intervals and animate both entry and exit.? I'm not sure if attachments work on the io group, if not, I'll post the image elsewhere and send a link.
Keep safe, keep well,
Cheers,
Peter
Approx. 55?N, 2?W? (Northumberland, UK)
--
This email has been checked for viruses by Avast antivirus software.
|
Glad to see you here Peter. We still have lots to do and have a few new members on the Facebook group. Worth joining for astronomical interests if nothing else. Regards Steve
Dr. S.J. Wainwright FRAS? Sent from Unix
Hi, folks,
You probably all know about this, but with all the fine weather we've
been having, although twilight has limited my astro imaging, this was in
daylight, and helped to relieve the lock down boredom ;-)? (Posted on
Stargazers Lounge last week.)
On June 19th at approximately 0740 UT (0840 UK Summer time) the Moon
occults Venus, which reappears a little over an hour later. Daylight of
course, so good clarity required.? Probably not too much turbulence that
time of day in the UK.? Anyway, I decided to do some tests on May 27th.
At that time Venus was only 11 degrees from the Sun, the Moon well away
at 58 degrees.? On occultation day the separation from the Sun will be
22 degrees to the West.? Not easy to find, but a binocular sweep might
do it - just be very careful not to look at the Sun, 22 degrees is only
two fist breadths away at arms length.? Safest thing is to hide behind a
corner of a house or similar - with the Sun just hidden you've a better
chance of finding the Moon.
So this image is obviously a composite, but is to scale (cropped from
the originals).? I've coloured the Venus background - it was washed out
being so close to the Sun.? I've rotated both Moon and Venus 180 degrees
to approximate their appearance at the time.? ?Canon 700D on TMB
refractor at 650 mm focal length, but I will use a longer focal length
on the day.? Exposure times were different because of the sky
background, but of course will be a compromise on the day.? Weather
permitting - fingers crossed!
But hopefully we will see something like this although the Moon crescent
will be slimmer.? All being well I'll take images at 15 second intervals
and animate both entry and exit.? I'm not sure if attachments work on
the io group, if not, I'll post the image elsewhere and send a link.
Keep safe, keep well,
Cheers,
Peter
Approx. 55?N, 2?W? (Northumberland, UK)
|
Thank you Steve and Peter,
I thought I'd been transferred to the new group, but when I tried to send the below was refused. So naturally subscribed immediately - I guess I must have missed a number of emails, but will catch up on the group site.
Keep well, keep safe.
Cheers,
Peter
Approx. 55?N, 2?W (Northumberland, UK)
toggle quoted message
Show quoted text
On 03/06/2020 19:16, Dr Steve Wainwright wrote: Glad to see you here Peter.
We still have lots to do and have a few new members on the Facebook group. Worth joining for astronomical interests if nothing else.
Regards
Steve
Dr. S.J. Wainwright FRAS
Sent from Unix
On Wed, 3 Jun 2020 at 13:23, Peter Vasey <petevasey@... <mailto:petevasey@...>> wrote:
Hi, folks,
You probably all know about this, but with all the fine weather we've
been having, although twilight has limited my astro imaging, this
was in
daylight, and helped to relieve the lock down boredom ;-)? (Posted on
Stargazers Lounge last week.)
On June 19th at approximately 0740 UT (0840 UK Summer time) the Moon
occults Venus, which reappears a little over an hour later. Daylight of
course, so good clarity required.? Probably not too much turbulence
that
time of day in the UK.? Anyway, I decided to do some tests on May 27th.
At that time Venus was only 11 degrees from the Sun, the Moon well away
at 58 degrees.? On occultation day the separation from the Sun will be
22 degrees to the West.? Not easy to find, but a binocular sweep might
do it - just be very careful not to look at the Sun, 22 degrees is only
two fist breadths away at arms length.? Safest thing is to hide
behind a
corner of a house or similar - with the Sun just hidden you've a better
chance of finding the Moon.
So this image is obviously a composite, but is to scale (cropped from
the originals).? I've coloured the Venus background - it was washed out
being so close to the Sun.? I've rotated both Moon and Venus 180
degrees
to approximate their appearance at the time.? ?Canon 700D on TMB
refractor at 650 mm focal length, but I will use a longer focal length
on the day.? Exposure times were different because of the sky
background, but of course will be a compromise on the day.? Weather
permitting - fingers crossed!
But hopefully we will see something like this although the Moon
crescent
will be slimmer.? All being well I'll take images at 15 second
intervals
and animate both entry and exit.? I'm not sure if attachments work on
the io group, if not, I'll post the image elsewhere and send a link.
Keep safe, keep well,
Cheers,
Peter
Approx. 55?N, 2?W? (Northumberland, UK)
|
Hi, Sylvain,
I've just rejoined the group, so.... Did anybody help you with the kit?? Or did you manage it yourself?? I built my (mono) version many years ago - a 'beta' version where I had to populate the circuit boards from scratch.? i believe the kits were pretty straightforward in comparison ;-)? Which camera is it?? If the 285, definitely worth completing - that chip is very good and I am sure that you will enjoy using it even though by current standards the downloads are relatively slow.? But the Artemis Capture software is very intuitive and happily takes regions of interest so focusing is quick.
I'd like to help, but am in the UK of course.
Cheers,
Peter
|
Dr Steve Wainwright
Sylvain Weiller
