|
Well, I've had it.? I'm just going to send the whole thing to Losmandy and see if they can figure it out.? My eq6-r is currently guiding at 0.19" and the g11 is doing this.??
|
On Wed, Feb 26, 2025 at 04:12 PM, Thomas Kallenbach wrote:
I can remove the new RA extension
The 12" extension is much more responsible if the issue comes for these add-ons.? Because the 12 inches of extension increases the inertia the pier must dampen much more that the slight increase from the RA extension.
?
Doug
|
Hey Thomas,
I've just been following the thread silently as I'm at just as much of a loss as anyone else regarding a definitive source, but I did have a thought:
Your very tight clutch technique may have worked under the pre-RA-extension configuration, but then the RA extension would have extended the moment arm on your RA axis by a few inches. This small difference in moment arm could be just enough to induce a very slight deformation in the RA axis when the clutches are loaded so heavily. I hypothesize that a reduction in that stress will smooth out your guiding, and that stress reduction could come from lowering your clutch pressure or removing your RA-extension, which it sounds like you already have.
I have had my mount for a couple of years now. I also have the RA extension and I was also noticing that my guiding was getting worse. I tried to tighten down my clutches but just couldn't improve it. I had it down to .25-.45 arcsec about a year ago and it just started creeping up to over 1 arcsec even when the seeing wasn't that bad. I tried worm adjustments, clean and relube, clutch pad replacement with Michael Herman's pads; just about everything.
Ultimately, on this forum I came across the advice to have the clutches barely tightened so the mount could easily be pushed if needed. I carefully rebalanced (rolling DEC to 0 degrees) and marked my mounting plate with my saddle so I could easily repeat the position. I tried barely tightening to contact, polar aligned and, hit "Play" in the NINA Advanced Sequencer.
Currently watching the mount settle at .3-.7 arcsec again with none of those severe sawtooth RA excursions like I saw before.
I'm sold on Chip's "barely make contact" with clutch technique.
Also, when I took my axes apart to clean and relube I noticed some wear on the shaft where it touches the needle bearings. I am pretty sure I induced this by over tightening my clutch over time.
?
I can imagine your frustration right now; I bet we have all been there at some time in this hobby, and I hope the RA extension removal gives you some instant satisfaction so you can get some imaging in. But I would encourage you to not give up on the RA extension and give it another shot once you feel like you aren't chasing ghosts in the mount.
Wishing you clear skies and a rewarding imaging session,
Ryan
|
Thanks Paul.
I decided to remove the RA extension.?
We'll see what happens.
Tom
|
On Wed, Feb 26, 2025 at 04:12 PM, Thomas Kallenbach wrote:
Hello Everyone,
Tonight might be a clear night so I thought I would set up the scope.? I read in another thread that tightening the clutches excessively could cause jerky movements.? I may have tightened the clutches beyond what was necessary to hold the scope.? I can try it tonight with the clutches only as tight as necessary or, I can remove the new RA extension and see if that makes a difference.? Remember, this problem showed up right after the RA extension and 12" pier extension addition.??
I sure appreciate any advice.? But if I am going to take the RA extension off, I need to get started.
Thank you all,
Tom
Can't give you a definitive advice, Tom, since none of us know for sure what's going on. If you can test with an non-over tightened clutch, first, and then, if that doesn't help, try removing the RA extension. Either one of these seems to be a low-probability solution to me, so do what you think is more likely to give you the answer.
?
Regards,
?
? -Paul
|
Hello Everyone,
Tonight might be a clear night so I thought I would set up the scope.? I read in another thread that tightening the clutches excessively could cause jerky movements.? I may have tightened the clutches beyond what was necessary to hold the scope.? I can try it tonight with the clutches only as tight as necessary or, I can remove the new RA extension and see if that makes a difference.? Remember, this problem showed up right after the RA extension and 12" pier extension addition.??
I sure appreciate any advice.? But if I am going to take the RA extension off, I need to get started.
Thank you all,
Tom
|
Our weather degraded significantly since I last wrote.? In fact the blizzard Friday shut down like 150 miles of the interstate.? It has been cloudy and now we have an artic blast headed this way so our normal 5 below is going to 20 below this week.? That's without windchill.??
When the weather cooperates, the first thing I am going to do is remove the RA extension and see what I get.
Thanks for checking in.
Tom
|
?
?
So?? What happened?? Did you find the issue?? Keep us posted.??
?
--
Chip Louie Chief Daydreamer Imagination Hardware?
Astrospheric Forecast - South Pasadena, CA?
?
?
?
|
On Fri, Jan 31, 2025 at 03:00 PM, Thomas Kallenbach wrote:
I appreciate your comments and no, I am not looking for perfect guiding.? What is the saying...The perfect is the enemy of the good.? I did have one thought; could the camera fan, if it is out of balance cause the problems I am experiencing?? I seem to remember hearing that some 2600MM cameras had fan vibration problems.? If that is possible I can swap cameras and see if there is a difference in the guiding.? What do you think?
Hi Tom,
?
I did the fan change on the 2600MM and I can't say it ever improved any of my images. But I don't think that would affect guiding on one side of the meridian versus the other. It sounds like you got a mount with low mileage so it most likely was set well at the factory. But there is no way to judge guiding performance until you actually get it out under the stars. Perhaps your mount got jarred during handling or transportation. But back to the worm gear - each one made at HGM is unique and has its own profile/personality even though they pass QC inspection. Sometimes you can get lucky swapping the RA and Dec worms to get better performance.? The RA worm is always turning and will wear more quickly than the Dec worm which just rocks back and forth. Once you have a very good polar alignment, Dec adjustments through a guide cam arrangement will be making only minor moves. So the latter will have a different thread wear which can serve for better RA tracking. The worms are made of brass and are easily bent on nicked when removed from the mount so be careful if trying this swap. As was already mentioned these mounts can be rebuilt more easily than other brands. You have something mechanical going on, so it all depends on how much you want/need to chase down the true cause.
?
John
--
_____________________________________________________________________________________________________________________________________________________________________________
Losmandy G11G2 on pier; refurbed Losmandy G11 with OnStep controller; SkyShed design roll-off observatory; ZWO ASI2600MM-P; ZWO ASI071MC; Sky-Watcher Esprit 100 ED with field flattener; Celestron C925 Edge HD with 0.7XFR, William Optics Zenithstar 61 APO; PHD2, NINA, Sequence Generator Pro and PixInsight user
|
One thing from the comment Derek made, if I grab the CW shaft it will
move side to side slightly.
***
“slightly”
is good.. as in a 1/16th of an inch..
I
don’t use an ASIAir, but it sounds like things are “normal” so you should go
back to listening to the suggestions of others.. i.e. the same ones who taught
me.. Likely you will just do normal maintenance / learning what’s important and
it’ll work out.. The mounts are simple, but very well made and simple to work
on..
:-))
Derek
toggle quoted message
Show quoted text
From: [email protected] [mailto:[email protected]] On Behalf Of Thomas Kallenbach via groups.io
Sent: Friday, January 31, 2025
8:36 AM
To: [email protected]
Subject: Re: [Losmandy_users_io]
RA guiding awful after upgrade
?
I contacted Losmandy but they weren't able to provide much help beyond
check for dragging cables.? I admit, the photos I sent do show a bit of a
cable mess but I am sure that is not the problem.? The scope had not been
used when I bought it, it was part of an estate sale (RIP) and didn't have any
nicks, scratches or blemishes.? Initially, I wrote to this forum because I
was having problems with the flips.? That was frustrating but was my
fault, not the mount.? The help I received here fixed my problem.?
?But, because the scope I bought this mount for (TS Optics Photoline 130)
is kind of long, I had to wait for the meridian flip to keep the scope from
crashing into the mount.? The extensions fixed that problem.? That
said, there are still several buggy aspects of the mount/asiair combination.
I am still a beginner.? I started with a Skywatcher EQ6 R a couple
of years ago so the Skywatcher is the only thing I have to compare to.? For
example, If I start a plan or auto run, the asiair will issue a goto to the
mount and the mount may or may not move.? The screen will indicate slewing
but the mount just sits there.? Other times the mount will move and get
stuck in auto-centering on the target.? It may indicate that the target is
centered but more often than not, I have to move it back to CWD shut everything
off and restart it.? ? Sometimes the mount/asiair has no idea where
it is and all of a sudden forgets where CWD is.? Meridian flips require at
least three commands from the asiair before the mount will move.? My guess
is the losmandy software and the asiair software do not communicate well
because the Skywatcher has none of these problems.? In my experience it
operates flawlessly.? And yes, all the software is up to date. It has been
cold recently but the RA guiding was bad in the warm weather.? I
understand that the G11 is in a different class than the eq6.??
One thing from the comment Derek made, if I grab the CW shaft it will
move side to side slightly.? Not at the connection of the shaft to the
mount but near the?
RA extension.? It is not much. It feels like slop in the gears.
But again it is not much but it is noticeable.? ?Derek, yes, I added
a 12 pier extension and RA extension at the same time.? Initially I
thought something was loose and that maybe I forgot to tighten a screw. I went
through it and made sure everything was tight.? I did not find any loose
screws.??
The mount still does a good job.? I had to toss a few subs for
sure but here is 33 hours with the G11:
?[URL=https://astrob.in/n0hff5/0/][IMG]https://astrob.in/n0hff5/0/rawthumb/gallery/get.jpg?insecure[/IMG][/URL]
|
Mark,
I appreciate your comments and no, I am not looking for perfect guiding.? What is the saying...The perfect is the enemy of the good.? I did have one thought; could the camera fan, if it is out of balance cause the problems I am experiencing?? I seem to remember hearing that some 2600MM cameras had fan vibration problems.? If that is possible I can swap cameras and see if there is a difference in the guiding.? What do you think?
Old...getting old is a drag but it beats the alternative.? I'm there too.
|
A tiny amount of wiggle in each axis is normal.
?
Without any "lash" (aka wiggle, slop, choose your word) in one position (location on the worm) there is risk that the gears will bind on another.
The center of the worm teeth pattern is never exactly (we're talking thousands here) at the center of rotation of the axis. Want that? Spend a lot
more money.
?
Most people overdo trying to get backlash out of their mounts. Usually a fool's errand, caused by their desire
for perfection without spending tens of thousands on a mount.
?
When I adjust mounts I always to try to be able to just feel the wiggle but not see it or hear it (at high speed).
The human hand is a very sensitive instrument as is the ear.
?
I seriously doubt that is your "problem". And if you are satisfied with the imaging performance that is all that really matters.
More than one person has created problems for themselves while chasing perfection.
?
The fact that the "problem" appears only on one side of that mount (so it seems) points to something with weight/balance, or cabling.
?
I run my G11 off of WiFi using OnStep normally. I occasionally use USB but then it goes directly from the PC to the mount controller and that isn't very often.
So usually I just have one USB 3.0 running to the camera which has a built in hub. The guider and (when used) focuser connect to that so there is only one wire
from the PC to the mount and one power line to the camera cooler/hub. The mount and the PC each have their own power source.
That way I don't have a lot of wires running around to trip over between the PC (on a small table) and the mount. And minimal wires to drag the OTA..
?
Just the advice of an old, old, dog.
?
Mark C
|
I contacted Losmandy but they weren't able to provide much help beyond check for dragging cables.? I admit, the photos I sent do show a bit of a cable mess but I am sure that is not the problem.? The scope had not been used when I bought it, it was part of an estate sale (RIP) and didn't have any nicks, scratches or blemishes.? Initially, I wrote to this forum because I was having problems with the flips.? That was frustrating but was my fault, not the mount.? The help I received here fixed my problem.? ?But, because the scope I bought this mount for (TS Optics Photoline 130) is kind of long, I had to wait for the meridian flip to keep the scope from crashing into the mount.? The extensions fixed that problem.? That said, there are still several buggy aspects of the mount/asiair combination.
?
I am still a beginner.? I started with a Skywatcher EQ6 R a couple of years ago so the Skywatcher is the only thing I have to compare to.? For example, If I start a plan or auto run, the asiair will issue a goto to the mount and the mount may or may not move.? The screen will indicate slewing but the mount just sits there.? Other times the mount will move and get stuck in auto-centering on the target.? It may indicate that the target is centered but more often than not, I have to move it back to CWD shut everything off and restart it.? ? Sometimes the mount/asiair has no idea where it is and all of a sudden forgets where CWD is.? Meridian flips require at least three commands from the asiair before the mount will move.? My guess is the losmandy software and the asiair software do not communicate well because the Skywatcher has none of these problems.? In my experience it operates flawlessly.? And yes, all the software is up to date. It has been cold recently but the RA guiding was bad in the warm weather.? I understand that the G11 is in a different class than the eq6.??
?
One thing from the comment Derek made, if I grab the CW shaft it will move side to side slightly.? Not at the connection of the shaft to the mount but near the?
RA extension.? It is not much. It feels like slop in the gears. But again it is not much but it is noticeable.? ?Derek, yes, I added a 12 pier extension and RA extension at the same time.? Initially I thought something was loose and that maybe I forgot to tighten a screw. I went through it and made sure everything was tight.? I did not find any loose screws.??
?
The mount still does a good job.? I had to toss a few subs for sure but here is 33 hours with the G11: ?[URL=https://astrob.in/n0hff5/0/][IMG]https://astrob.in/n0hff5/0/rawthumb/gallery/get.jpg?insecure[/IMG][/URL]
?
?
?
|
On Fri, Jan 31, 2025 at 01:55 AM, John Kmetz wrote:
You can buy a new high precision brass worm from Losmandy which may give you better results
That seems unlikely to help in this case. The RA Worm appears to behave well, with low error and low PE on the east side of the mount. It's still a good idea to measure the unguided worm performance, but I doubt replacing the worm will improve on what Tom is reporting. Adjusting the worm/worm gear mesh might help. And rotating the worm gear to a different section, as was suggested earlier.
?
Regards,
?
? ?-Paul
|
On Thu, Jan 30, 2025 at 12:36 AM, Thomas Kallenbach wrote:
Thanks John.
I bought the mount used but it had never been opened or set up.? It came from company seven and I was told they test each mount.? The motors are not tucked.??
I was just outside with it and maybe it just doesn't play well with the asiair.? I generally have to go back to cwd, shut everything down, restart the mount, restart the air....it gets tedious.? I have avoided Nina because of windows.??
Ok. So it just flipped.? RA guiding went from around 2 before the flip to 0.5 now. And my stars are round.? It always improves after the flip with the scope on the east side.??
Tom,
?
It is possible that you have an RA worm gear which is rougher on one side of the threads than the other, which would explain the change in guide performance after a flip. But that should not have changed with the new extensions and would have been there all along. You can buy a new high precision brass worm from Losmandy which may give you better results. If you do go to that length of replacing it, you might want to consider a rebuild and change out the worm bearings, and the thrust bearings as well. Some time, elbow grease and determination are required here :).
?
John
--
_____________________________________________________________________________________________________________________________________________________________________________
Losmandy G11G2 on pier; refurbed Losmandy G11 with OnStep controller; SkyShed design roll-off observatory; ZWO ASI2600MM-P; ZWO ASI071MC; Sky-Watcher Esprit 100 ED with field flattener; Celestron C925 Edge HD with 0.7XFR, William Optics Zenithstar 61 APO; PHD2, NINA, Sequence Generator Pro and PixInsight user
|
Y’all
are leaving out the NEW pier extension.. .. You installed BOTH a new RA eXT *and*
a 12” pier extension, right??
My
suggestion would be to take the fully loaded setup and loosen and retighten all
the fasteners (used to install the extension to your mount, not any fasteners
used to assemble the extension itself..)..
Do
the same with the RA EXT.. I have the RA EXT, and no pier extension and never
had this issue.. To me it’s the pier extension..
?
My
second suggestion would be balance is not as east heavy as you think it is,
which is why it doesn’t work on one side but not the other..
?
Something
else.. You didn’t mention the weather.. has it been obviously colder than
when it work well?? How much does the bottom end of the counterweight shaft
move when you try and move it with your hand??
I
have other *simple* suggestions before you do anything drastic..
?
Derek
?
?
toggle quoted message
Show quoted text
From: [email protected] [mailto:[email protected]] On Behalf Of Chip Louie
via groups.io
Sent: Thursday, January 30, 2025
4:30 PM
To: [email protected]
Subject: Re: [Losmandy_users_io]
RA guiding awful after upgrade
?
On Wed, Jan 29, 2025 at 05:58 PM, Thomas Kallenbach wrote:
Thanks guys.? Do you think I would just be ahead to send the mount
into Losmandy and let them figure it out?? I could have them do the tucked
in motors at the same time.? I'm not sure I am comfortable with what may
be necessary.? That is why I still use the asiair, it hides a lot of the
complexity.
To follow up on my previous post Losmandy is an outstanding company in
that the people really do their best to support the Losmandy community.?
Losmandy fully, and I mean FULLY supports every mount new and used they have
ever produced including the Celestron branded mounts.? I mean nobody,
NOBODY will take a mount in they made 30+ years ago and rebuild it to the
current specs for that mount no matter how fancy the brand is considered
today.? Sure it's not free but you cannot get this from any other mount
maker in the normal course of business period.??Losmandy knows the value
of their mounts, it
just goes to show you what all the other telescope mount makers think of their
work and your investment.? ?
All it takes is money on your part.? Does it always make economic
sense?? In my experience no,? but it can be done for those mounts
with a special attachment or special history.? I've done it and IME it was
well worth the additional cost when it was all said and done.? But also I
think I need to say that unless you bought the mount for peanuts it will not
really be time or cost effective to have the old mount updated to current
specs.? At least you already have a Gemini (2??) so that makes it closer
to cost effective.??
I will say that as an owner of several G11 and GM8 mounts as well as my
original 20+ YO G11"s" model that over a few years I upgraded through
the full 30+ year progression from the original model G11s PUSH-TO #492 Digital
Drive mount which I fully disassembled to rebuild and lube the internal
bearings, then installing High Precision worms, aligning the gearbox output
shaft so the Oldham coupler connection to the worm was as straight as possible,
modifying the bearing blocks to encourage full worm bearing rotation and remove
worm endplay using Belleville springs, adding a new modern era double clamp
8" Losmandy dual D/V saddle, experimentally making a one piece worm block
with Belleville springs to use the bearings to preload the worms (this worked
very well so I told Scott about it who then showed me what he was working on in
secret which caused me to wait for over a year for the coming Losmandy spring
loaded OPW) installing a Gemini 1 controller, building a regulated
multi-voltage (13.5v & 17.5v) multi-bank power pack to support portable
field use for visual and imaging work for 2 Losmandy Gemini mounts, installing
a Gemini 2 system and then having Scott do the full update to the new OPWs, RA
extension etc. then at a later date once finalized Scott added the spring
loaded feature.? It has been a journey but what fun we had!? So was
it worth it?? As I said for me it most certainly was.??
To answer the ASIAIR question it has been my experience that the ASIAIR
is not quite as good at autoguiding as using a laptop and PHD2 on the same
mount and imaging rig.? I say this because I relied on ASCOM and PHD2 and
SGP for imaging and 5 years ago PHD2 produced excellent guiding on the same 20+
YO mount using the same guide scope and ASI120MM mini and ASI290MM mini.?
The numbers are just not as good in absolute terms but what I have seen is that
if you are guiding well under 0.5" total error and then the ASIAIR comes
along and is guiding at 0.7" total error and I cannot see any advantage to
putting up with all the extra trouble of using a laptop and a dozen cables to
make it work I'm just not going to bother.? Give me the elegance of the
ASIAIR solution anyday.
Here is the small driveway imaging rig clamped to an old school
Losmandy S-B-S dovetail on the even older G11G, LWT and Wheelie Bar.? The
small imaging rig is an Askar FRA500 90mm f.5.6 Petzval working @ f/3.9, ASIAIR
Plus 256GB v3, ASI2600MC-Pro main camera, EFW 2"x5, EFA w/temp probe,
ASI678MM guide camera on Stellarvue 50mm f/4 guide scope, Deep Sky Dad Flat
Panel and a Stellarvue 50mm visual finder.? Waiting for the CAA to show
up, should be any day now LOL.? All of the components and most cables are
on the scope and move with the scope except for 2 independent power cords and
an Ethernet cord.? The ASIAIR Plus and Gemini 2 talk to each other through
a high performance Slate AX1800 travel router via Ethernet and the tablet or
phone use the Slate to connect over Wi-Fi.? ? ? ? ?
?
Chip Louie Chief
Daydreamer Imagination Hardware?
Astrospheric Forecast - South Pasadena,
CA?
|
On Wed, Jan 29, 2025 at 05:58 PM, Thomas Kallenbach wrote:
Thanks guys.? Do you think I would just be ahead to send the mount into Losmandy and let them figure it out?? I could have them do the tucked in motors at the same time.? I'm not sure I am comfortable with what may be necessary.? That is why I still use the asiair, it hides a lot of the complexity.
?
Where is the tip jar?
?
?
To follow up on my previous post Losmandy is an outstanding company in that the people really do their best to support the Losmandy community.? Losmandy fully, and I mean FULLY supports every mount new and used they have ever produced including the Celestron branded mounts.? I mean nobody, NOBODY will take a mount in they made 30+ years ago and rebuild it to the current specs for that mount no matter how fancy the brand is considered today.? Sure it's not free but you cannot get this from any other mount maker in the normal course of business period.??Losmandy knows the value of their mounts, it just goes to show you what all the other telescope mount makers think of their work and your investment.? ?
?
All it takes is money on your part.? Does it always make economic sense?? In my experience no,? but it can be done for those mounts with a special attachment or special history.? I've done it and IME it was well worth the additional cost when it was all said and done.? But also I think I need to say that unless you bought the mount for peanuts it will not really be time or cost effective to have the old mount updated to current specs.? At least you already have a Gemini (2??) so that makes it closer to cost effective.??
?
I will say that as an owner of several G11 and GM8 mounts as well as my original 20+ YO G11"s" model that over a few years I upgraded through the full 30+ year progression from the original model G11s PUSH-TO #492 Digital Drive mount which I fully disassembled to rebuild and lube the internal bearings, then installing High Precision worms, aligning the gearbox output shaft so the Oldham coupler connection to the worm was as straight as possible, modifying the bearing blocks to encourage full worm bearing rotation and remove worm endplay using Belleville springs, adding a new modern era double clamp 8" Losmandy dual D/V saddle, experimentally making a one piece worm block with Belleville springs to use the bearings to preload the worms (this worked very well so I told Scott about it who then showed me what he was working on in secret which caused me to wait for over a year for the coming Losmandy spring loaded OPW) installing a Gemini 1 controller, building a regulated multi-voltage (13.5v & 17.5v) multi-bank power pack to support portable field use for visual and imaging work for 2 Losmandy Gemini mounts, installing a Gemini 2 system and then having Scott do the full update to the new OPWs, RA extension etc. then at a later date once finalized Scott added the spring loaded feature.? It has been a journey but what fun we had!? So was it worth it?? As I said for me it most certainly was.??
?
To answer the ASIAIR question it has been my experience that the ASIAIR is not quite as good at autoguiding as using a laptop and PHD2 on the same mount and imaging rig.? I say this because I relied on ASCOM and PHD2 and SGP for imaging and 5 years ago PHD2 produced excellent guiding on the same 20+ YO mount using the same guide scope and ASI120MM mini and ASI290MM mini.? The numbers are just not as good in absolute terms but what I have seen is that if you are guiding well under 0.5" total error and then the ASIAIR comes along and is guiding at 0.7" total error and I cannot see any advantage to putting up with all the extra trouble of using a laptop and a dozen cables to make it work I'm just not going to bother.? Give me the elegance of the ASIAIR solution anyday.
?
Here is the small driveway imaging rig clamped to an old school Losmandy S-B-S dovetail on the even older G11G, LWT and Wheelie Bar.? The small imaging rig is an Askar FRA500 90mm f.5.6 Petzval working @ f/3.9, ASIAIR Plus 256GB v3, ASI2600MC-Pro main camera, EFW 2"x5, EFA w/temp probe, ASI678MM guide camera on Stellarvue 50mm f/4 guide scope, Deep Sky Dad Flat Panel and a Stellarvue 50mm visual finder.? Waiting for the CAA to show up, should be any day now LOL.? All of the components and most cables are on the scope and move with the scope except for 2 independent power cords and an Ethernet cord.? The ASIAIR Plus and Gemini 2 talk to each other through a high performance Slate AX1800 travel router via Ethernet and the tablet or phone use the Slate to connect over Wi-Fi.? ? ? ? ? ?
?
?
--
Chip Louie Chief Daydreamer Imagination Hardware?
Astrospheric Forecast - South Pasadena, CA?
?
?
?
|
On Thu, Jan 30, 2025 at 07:14 AM, Thomas Kallenbach wrote:
Can that be done in the day?
Just let it track?
Tom
?
No. You use PHD2 to autoguide but turn off corrections.? This will display the guide scope data used for correction which will show you the mount's basic mechanical tracking accuracy.??
?
--
Chip Louie Chief Daydreamer Imagination Hardware?
Astrospheric Forecast - South Pasadena, CA?
?
?
?
|
Can that be done in the day?
Just let it track?
Tom
|
On Thu, Jan 30, 2025 at 12:36 AM, Thomas Kallenbach wrote:
Thanks John.
I bought the mount used but it had never been opened or set up.? It came from company seven and I was told they test each mount.? The motors are not tucked.??
I was just outside with it and maybe it just doesn't play well with the asiair.? I generally have to go back to cwd, shut everything down, restart the mount, restart the air....it gets tedious.? I have avoided Nina because of windows.??
Ok. So it just flipped.? RA guiding went from around 2 before the flip to 0.5 now. And my stars are round.? It always improves after the flip with the scope on the east side.??
Tom, just making sure: the mount had no such problems before you installed the RA Extension? Did you test it well prior to the installation? As others have said, the extension should have no effect on guiding, especially on one side of the mount. Something isn't properly engaging on the west side of your mount causing frequent jumps. I see some similar errors on the east side, although they are fewer and lower in magnitude. That's why I suggest collecting an unguided autoguider log on both sides. This will tell you how the mount behaves with simple tracking.
|
Ryan Noonan
Paul Kanevsky
Chip Louie