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Albert and others,

I also have placed my Telrad at the "right rear" position and I find
it a satisfactory spot, but I generally use my 8X50 finder more then
my telrad. My telrad base is attached using two sided foam tape I
bought at Radio Shack. It is thin enough that it dosn't pose an
alignment problem and it gives enough to ensure a good bond. I have
removed it a couple of times and had no problem. I used a platic
scraper to get most of it off and then a little Isopropyl alcohol to
get the sticky stuff off. None of this damaged the scope in anyway.

Just my 2 cents worth,

Matt

--- In OAFs@y..., "Jim Hayko" <jhayko@e...> wrote:

My recommendation is to stick with 2-sided sticky tape.

Thanks for the "sacrificial offering" to the telescope gods. Now we
know not to use that black stuff.

Regarding the sticky tape -- just so you know. It's not that it is
"easy" to take off with a hair dryer. However if you take your time
and proceed slowly, a bit at a time, you can usually get all of it off
in about 40 minutes. If you take your time, all of it does come off
and it left no trace on the black finish of my scope.

All for now,
Roland

RE: Black Silicone as adhesive for telrad/quikfinder test

I've just tried to remove my test sample.
Pros:
1. Seems very strong - would definitely hold finder/telrad
2. Very manageable and forgiving - takes ~ 1 hour to dry
Cons:
1. Was quite difficult to get off
2. I'm still unable to get a small black spot off of my tube, I've
tried grout removing tools, and window scrapers (with the small razor
blade) with no luck - so it does not seem to be completely removeable.

My recommendation is to stick with 2-sided sticky tape.

Sigh, I wonder if my blow-torch would take that last spot off ;-)

Jim

It appears that right rear is going to be the spot for my new Telrad.
Unforunately it's going to be one more thing that will affect the
balance of my scope. It's nice to know that I can go with the sticky
tape without any injury to the OTA paint in future. I'll still be
waiting on Jim Hayko's experiment with the black silicone on his
"spare" scope!

Thanks everyone.

Clear Skies,
Albert.

--- In OAFs@y..., Richard Harding <rharding@i...> wrote:

HI!
I have found that the best place for a Telrad, is where it DOESN'T:

1. Interfere with a camera piggy-back mount.
2. Doesn't adversely affect balance.
3. Isn't difficult to move back and forth from the Telrad to the

finder (eg. Telrad, finder, curse, Telrad, finder, curse...etc.).

Funny, I find them attractive....in a utilitarian kind of way, and

feel uncomfortable using a scope without one! BTW, the double sided
tape removes rather easily with the use of a hair dryer without
harming the finish (I have done this 3 times without incident).

Just my 3 cents worth!
Richard Harding

Hi Jim!
Good understanding of the issues. Eye relief for someone who wears glasses is a prime consideration. Especially when glasses kill a "wide field" (nothing like looking in a 7 mm. Nagler and seeing only 50 of the 82 deg.!! One thing to consider is that wearing glasses becomes less of an issue at smaller exit pupils (ie. higher magnifications) and one can often get away without glasses. However, taking off putting on is not my cup of tea, and I choose to view with my glasses on. This being said, the options that you have outlined are good, but I will make the following observations(my 2 cents worth :o)

My favourite eyepieces in my collection are:

1. 35 Panoptic - out of this world performance if you don't look into a 31 Nagler...it will spoil you.
2. 10.5 mm and 21 mm Pentax XLs. Drop dead georgeous eyepieces. The contrast and colour rendering are unparalled IMHO. The 65 deg. field falls short of the 82 deg. field of a Nagler, so you may want to look at the Type 4 Naglers. But these are the most "comfortable" eyepieces that I have ever used. I feel that the larger field makes them a notch above the Radians' 60 deg., and I never could get to like the "click stop" eyeguard.
3. 13 mm. Nagler. Wow field, with a fairly good eye relief. Good with my glasses, but without to see the whole field, the kidney bean effect drives me crazy!! I have been offered a trade for this eyepiece for a 14 mm. Pentax and I am considering it.
4. 17 mm. Vixen LVW. I like this eyepiece and its 65 deg. field. It is far superior to my 7.5 LV which I don't use much. Its only problem is its price where it runs into competition with the Pentaxs, Taks, and Radians ie. not good value when you consider re-sale value.

I sold my 10 mm. and 14 mm. Speers-Walers to purchase the Pentax and Nagler. I don't regret it. The Speers are fine eyepieces, but the eye relief is tight.

My suggestion? Buy a 10.5 mm. Pentax or Radian and get a quality barlow. this will be a good combo for higher magnification, and will definately optimize your scope (BTW, as well a C-8 Deluxe, I have an 8" Dob, and my 35 Pan, and 13 Nagler will NOT come to focus. Be carefull with this before buying wide angle eyepieces. Try to find one to test first!). If money is no object, look at the 12 mm. Nagler Type 4, with quality barlow.

Clear skies!!
Richard Harding




Hi Experts,<BR>

Hi Jim
First off the 8 mm Lanthanum is a great 'Messier' eyepiece !
While i only have 26 m's on my observed list (embarassing)
all without exception are fantastic in the 8 mm

PLEASE CALL La Maison though, $350.00 is way too expensive !
i paid $299.00 less 10% last fall; totalled about $310,
tax included, and they have them in stock.

The only Spears-Waler i've used is the 30 mm wide-angle.
And i wouldn't trade it against anything (well, maybe
a Nagler 31 type 5)

Just my 2 cents !

Clear Skies!!
brian

--- In OAFs@y..., jhayko@e... wrote:

The 3 eyepieces I'm considering are:
1) an 8mm LVW Lanthanum Superwide (65 degree FOV, 20mm eye relief,
150x, ~$350 CDN)
2) a 10mm Speers Waller(70 degree FOV, 16 mm eye relief, 125x, $200
CDN) - looked through one at Focus, unsure if eye relief is
sufficient when wearing glasses
3) a 10.5 Radian (60 degree FOV, 20mm eye relief, 114x, ~$350 CDN -
will have to order, not available locally)

Hi Jim,

I have been using a 10mm Speers Waller for over a year now and really
like the field of view, and details seen, as compared to the 10mm
Plossl I had. However, I don't use eyeglasses. Richard Harding had
one too and sold it, and I believe in part because it din't have
"quite" enough eye relief. You're welcome to try out my SW10 when
observing together...

I've no experience with the others listed above. Around the price
point of the other two though, the Pentax 10.5 EP that I've
looked through a couple of times, certainly gives good views with
good eye relief. Hopefully, some other OAFs will be able to give you a
hand.

Roland

Hey Rol et al!!
Yes I am back in Ottawa!! I was out with my small Dob at my brother's in Almont last night. Dark skies, but too many lights from various neighbours. It is great to see the old friends back....the Ring, the Dumbbell (low on horizon, but doable), M-4. Tried to wait for M-13, but gave up!!
I hope we can do a bit of viewing Rol as soon as your work slows down!!
Richard

Hi Experts,
I've got on Orion XT8 f/6 dob and am not too happy with the stock
10mm plossl eypiece and am thinking of making an acquisition.

My constraints are: 1) I'm an eyeglass wearer and I like to (try to)
sketch some of my targets so I prefer to keep my glasses on when
observing; 2) I am using a dob, and although I do have plans to build
an equatorial platform, I still think that a wide field of view would
be better; 3) I'm under the impression that about 125x is optimal for
alot of deep sky observations; 4) I've got a 32mm plossl, 26mm plossl
and 2x barlow which I'm quite happy with, so I'm looking for
something to compliment this set; 5) I've looked through a 9mm
Nagler, and although the view is jaw-dropping I find the eye-relief
tight for my needs)

The 3 eyepieces I'm considering are:
1) an 8mm LVW Lanthanum Superwide (65 degree FOV, 20mm eye relief,
150x, ~$350 CDN)
2) a 10mm Speers Waller(70 degree FOV, 16 mm eye relief, 125x, $200
CDN) - looked through one at Focus, unsure if eye relief is
sufficient when wearing glasses
3) a 10.5 Radian (60 degree FOV, 20mm eye relief, 114x, ~$350 CDN -
will have to order, not available locally)

If anybody has had experiences with any of the above eyepieces or can
think of any other alternatives which might meet me needs I'd really
appreciate hearing of your experiences.

Thanks in advance!
Jim

I just finished installing a "blinking" module on my Telrad. It is really slick!! It allows you to set the target symbol from full on to slow blink, to everything in between. A new dial switch controls the on-off, and the original switch just controls brightness. I think that this will stop the problem I have been having with the telrad "going on" while in my case. Sucks to find the unit on and the batteries dead!!
Richard

Albert,

Welcome to the group ;-)

I've posted a similar question to S.A.A newsgroup in the past.
I got some interesting answers about "mounting" for experimentation.
A common observation seemed to be that one could use "Black RTV
Silicone Adhesive/Sealant - automotive department at Canadian Tire
($4.99)" to mount the finder - and if it was perfectly mounted it
would basically stick forever - if it wasn't you could peal off the
silicone from both the finder and tube and try again.

I just bought a tube on Friday and just moments ago stuck a dab on my
old 4.5 reflector tube to see what would happen. I'll try to peel it
off in the morning and let everyone know how well it goes.

Jim

Hi gang
Something to take a look at.
BTW........i ordered mine at their web-site on a Saturday
at it was delivered priority mail on the following Friday.
Not too shoddy. Of course 65% on Canadian dollar kinda sucks !

hppt://www.focusser.com/

Moon Lite Telescope Accessories:

They have some really neat focussers too !

Clear Skies!!
brian(the-montrealer)martin

--- In OAFs@y..., Richard Harding <rharding@i...> wrote:

The telrad is ALWAYS the first thing to dew up!! Always!
Richard

Welcome back from T.O. Richard!! Yeah, Always...

Be most welcome to the group, Pete! Thought you could sneak in by
helping someone straight off, without even getting welcomed, did you!?
No way! A very classy try, tho! (Welcome, really.) ;-)

Always love your reports, Matt. They are absolutely classic! I see
you are practically mowing through your best NGCs in Virgo and
environs. You through with Virgo yet?

Gotta agree with everything people have said re: position of telrad.
I removed mine three times as well, with a hair dryer (just go slow).
You can buy more "sticky tape" at Canadian Tire, anytime.

Right rear for telrad also works best for me, after having tried right
front (wanting to make it easier to to find zenith objects).
Whichever you choose, be careful that the telrad is not protruding in
such a way as to interfere with movement in any of your axes,
dewshield, piggyback attachments or other equipment you might have. I
know from having had to move it twice, thus far.

When in the middle of her Messiers, Janice got so good with her
telrading skills that she could often place objects directly into the
field of view of a 32mm ep on the first try. A most useful
starhopping device.

Catch yer Photons before the bug onslaught!!
Roland

PS- Unfortunately, I'll be teaching this coming week. After that,
I'll be much more free.

Bruce,
I don't want to eat up to much on the message board with this but...

The scope is a CM-1100 which is on a German equatorial mount (CI-700).
Therefore the rear right seems to be the right spot.

Thanks,
Albert.
--- In OAFs@y..., "Bruce McGlashan" <mcglashanb2@h...> wrote:

Hi Albert:

Welcome to the group. I'm sure you will find the people here are

very

helpful to us newcomers.

I bought a scope (including a Telrad) just a month or so ago, and I

had

exactly the same question as you have. I mounted my Telrad on my

G-8 (same

as a C-8 only on a German equatorial mount instead of a fork mount)

on the

'top' (i.e. opposite from the mount rail), to the right of the

centre-line

(as seen from the back). I've found it to be a good location for

use in

every direction (so far). An object near the zenith is a pain, but

that

doesn't count, since it will be a pain no matter where you mount the

Telrad.

I appreciate that things will be a bit different for you on the

fork-mount.

Maybe some of the others in the group can address that. I just

wanted to

mention a couple of things to consider:

I mounted my Telrad off the centre-line for a couple of reasons.

First, my

transport case is tight on space, and the Telrad base would have hit

the

lid. More importantly, though, that's where you can mount a rail

for doing

piggy-backed astrophotography, something I'll probably get into

sometime

soon. If you're into AP, you might want to make sure the Telrad

won't get

in the way.

Secondly, a suggestion: Try mounting the Telrad temporarily with

duct tape

(or masking tape if you fear that the duct tape will strip the paint

off the

OTA). Sure, it will look ugly, but you can check out your location

as long

as you want, and convince yourself that it is right. Only then,

commit to

the location with the supplied double-sided tape.

Good luck. Hope to see you out observing some time soon ...

Bruce McGlashan

-----Original Message-----
From: lynnbert@m... [mailto:lynnbert@m...]
Sent: Sunday, May 13, 2001 15:55
To: OAFs@y...
Subject: [OAFs] New OAF with a Telrad question


Hi,
My name is Albert Saikaley. Mike Zeidler introduced me to a

couple

of OAF's and your/our yahoo group at the last RASC meeting.

Here's the question:

I finally broke down an bought a Telrad for my C-11. I hate the

look

of the things (Telrad NOT the scope) but they're just to darn

useful

not to have. What is the best location on the OTA for an SCT?

I'd

hate to get it wrong, I'm sure the double faced tape would rip

the

paint right off the tube.

Thanks in advance,
Albert.




Your use of Yahoo! Groups is subject to

HI!
I have found that the best place for a Telrad, is where it DOESN'T:

1. Interfere with a camera piggy-back mount.
2. Doesn't adversely affect balance.
3. Isn't difficult to move back and forth from the Telrad to the finder (eg. Telrad, finder, curse, Telrad, finder, curse...etc.).

Funny, I find them attractive....in a utilitarian kind of way, and feel uncomfortable using a scope without one! BTW, the double sided tape removes rather easily with the use of a hair dryer without harming the finish (I have done this 3 times without incident).
Just my 3 cents worth!
Richard Harding

Good points about the dew shield interferencen and the need to add a dew removal system for the Telrad. I think of the Telrad as the canaries they use to take down into the mines. The canary always died before the conditions became lethal for humans, but it was time to get out!! The telrad is ALWAYS the first thing to dew up!! Always!
Richard

Hi Albert:

Welcome to the group. I'm sure you will find the people here are very
helpful to us newcomers.

I bought a scope (including a Telrad) just a month or so ago, and I had
exactly the same question as you have. I mounted my Telrad on my G-8 (same
as a C-8 only on a German equatorial mount instead of a fork mount) on the
'top' (i.e. opposite from the mount rail), to the right of the centre-line
(as seen from the back). I've found it to be a good location for use in
every direction (so far). An object near the zenith is a pain, but that
doesn't count, since it will be a pain no matter where you mount the Telrad.

I appreciate that things will be a bit different for you on the fork-mount.
Maybe some of the others in the group can address that. I just wanted to
mention a couple of things to consider:

I mounted my Telrad off the centre-line for a couple of reasons. First, my
transport case is tight on space, and the Telrad base would have hit the
lid. More importantly, though, that's where you can mount a rail for doing
piggy-backed astrophotography, something I'll probably get into sometime
soon. If you're into AP, you might want to make sure the Telrad won't get
in the way.

Secondly, a suggestion: Try mounting the Telrad temporarily with duct tape
(or masking tape if you fear that the duct tape will strip the paint off the
OTA). Sure, it will look ugly, but you can check out your location as long
as you want, and convince yourself that it is right. Only then, commit to
the location with the supplied double-sided tape.

Good luck. Hope to see you out observing some time soon ...

Bruce McGlashan

Pete,
Thanks, I'll mount/aim it tomorrow in preparation for next weekend.

BTW, I do have the dew sheild on order which I will more than likely
follow with an order for a heater.

Cheers,
Albert.
--- In OAFs@y..., P & B Everson <pb.everson@s...> wrote:

Albert,

Here is my take on it. Most of the real estate on a C-11 or C-8 is
taken up with a regular finder and space for a piggy-back mount -

only

the right rear portion isn't spoken for. I would mount the telrad

to

the rear of the scope since mounting it forward would interfere with

dew

heater, dew cap or both.

Telrads are ugly but work very well. You will need to install

something

to deal with dew, either a shield of some sort or Kendrick dew

heater.

Pete

lynnbert@m... wrote:

Hi,
My name is Albert Saikaley. Mike Zeidler introduced me to a

couple

of OAF's and your/our yahoo group at the last RASC meeting.

Here's the question:

I finally broke down an bought a Telrad for my C-11. I hate the

look

of the things (Telrad NOT the scope) but they're just to darn

useful

not to have. What is the best location on the OTA for an SCT?

I'd

hate to get it wrong, I'm sure the double faced tape would rip

the

paint right off the tube.

Thanks in advance,
Albert.


Yahoo! Groups Sponsor

[www.debticated.com]

Your use of Yahoo! Groups is subject to the Yahoo! Terms of

Service.

Albert,

Here is my take on it. Most of the real estate on a C-11 or C-8 is
taken up with a regular finder and space for a piggy-back mount - only
the right rear portion isn't spoken for. I would mount the telrad to
the rear of the scope since mounting it forward would interfere with dew
heater, dew cap or both.

Telrads are ugly but work very well. You will need to install something
to deal with dew, either a shield of some sort or Kendrick dew heater.

Pete

lynnbert@... wrote:

Hi,
My name is Albert Saikaley. Mike Zeidler introduced me to a couple
of OAF's and your/our yahoo group at the last RASC meeting.

Here's the question:

I finally broke down an bought a Telrad for my C-11. I hate the look
of the things (Telrad NOT the scope) but they're just to darn useful
not to have. What is the best location on the OTA for an SCT? I'd
hate to get it wrong, I'm sure the double faced tape would rip the
paint right off the tube.

Thanks in advance,
Albert.


Yahoo! Groups Sponsor

[www.debticated.com]

Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.

Hi,
My name is Albert Saikaley. Mike Zeidler introduced me to a couple
of OAF's and your/our yahoo group at the last RASC meeting.

Here's the question:

I finally broke down an bought a Telrad for my C-11. I hate the look
of the things (Telrad NOT the scope) but they're just to darn useful
not to have. What is the best location on the OTA for an SCT? I'd
hate to get it wrong, I'm sure the double faced tape would rip the
paint right off the tube.

Thanks in advance,
Albert.