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Tabletop Manifestations

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#76 tturtle

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Posted 18 August 2023 - 11:45 AM

Yes the original .965 wasn’t bad but the 1.25 really transforms the scope.  The adapter goes from the Vixen 36.4 to T2 threads so I can use the Baader T2 diagonal. 
 

So, I’m assuming that the focuser was originally a .965? Is that an aftermarket adapter to get it to take that 1.25” diagonal? I have a .965 to 1.25” adapter but it isn’t very sturdy.


Edited by tturtle, 18 August 2023 - 11:46 AM.


#77 highfnum

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Posted 19 August 2023 - 05:33 AM

1 inch Peter Dollond triplet 1790

 

pd1f.jpg

 


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#78 highfnum

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Posted 20 August 2023 - 09:22 AM

i guess 1820's speculum metal Gregorian counts as table top

solargregoriansm.jpg


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#79 Weisswurst Josef

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Posted 28 August 2023 - 04:01 PM

Does 6" f/10 count as table top?

Yes I agree it should be a strong table.

Perfect for horizontal views.

 

 

DSCN4738.JPG

 

 


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#80 Alanvogt

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Posted 31 August 2023 - 02:29 PM

I have 2 tabletop classics.  A 1963 Questar and a Japanese Astroscan. Don't know if the Japan version is better than USA or worse.  Also have a couple ETX's but don't consider them classics. 

20220203_143529.jpg

20210510_093559.jpg

 


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#81 davidmcgo

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Posted 01 September 2023 - 09:32 AM

Here is my old Meade 2044 along with some other classic buys a few years ago:

 

 

Dave

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#82 Werckmeister

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Posted 27 October 2023 - 06:30 AM

A small group of telescopes taking a stroll

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#83 mpsteidle

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Posted 27 October 2023 - 07:45 AM

A small group of telescopes taking a stroll

The little hump backed scope (#5) cracks me up.  What a goofy little guy.


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#84 mattyfatz

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Posted 11 February 2024 - 12:29 PM

That’s the Swift (the original Swifty as I like to call it). The optics are fantastic on that little guy. I use mine regularly for birding.



#85 mattyfatz

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Posted 11 February 2024 - 12:34 PM

I have 2 tabletop classics.  A 1963 Questar and a Japanese Astroscan. Don't know if the Japan version is better than USA or worse.  Also have a couple ETX's but don't consider them classics. 

attachicon.gif 20220203_143529.jpg

attachicon.gif 20210510_093559.jpg

I have that same Astroscan. I’ve owned it for 40 years. The tripod adapter never really worked for me, but I put the base on tripod legs in place of the tripods Pan-Head.. (1/4-20 thread).


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#86 Werckmeister

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Posted 14 February 2024 - 08:09 AM

Library or maybe chappe telescope marked Freminville Rue du Baq no 112 Paris
Mahogany tube, 37 mm doublet, upright view. Restored it myself, bought at a garage sale.

 

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Edited by Werckmeister, 14 February 2024 - 08:18 AM.

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#87 mcwolfson

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Posted 22 February 2024 - 11:24 PM

Hello -- Just discovered this "zombie" topic.  Not sure this qualifies as table top: it is a Russian Komz telescope for snipers.  One person apparently did the spotting while a second had the rifle.  It is quite heavy so this would have been a major effort to move around on foot, if that's in fact how it was used.

 

It is catadioptric with about a 5" diameter for the optics, and a rather small secondary for its apparent focal length

 

I'd be keen if anyone knows any more about this fascinating instrument.

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#88 mikerepp

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Posted 23 February 2024 - 06:13 AM

Very cool!  Would have been used more than likely at the range for sighting in.  Looks in pretty good shape.



#89 Terra Nova

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Posted 23 February 2024 - 12:07 PM

Very cool!  Would have been used more than likely at the range for sighting in.  Looks in pretty good shape.

I agree and yes, very cool. I can’t imagine carrying that into combat tho. The rifle would have telescopic sights on it.



#90 mcwolfson

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Posted 23 February 2024 - 03:18 PM

Thanks.  I'd really like to try it out for astronomy, but unfortunately it only has straight through viewing.  Also, I cannot figure out how to disassemble it non-destructively.  If I could figure this out, I could try to machine something to fit a diagonal.



#91 Dave Trott

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Posted 25 February 2024 - 11:01 PM

You may want to check out this posting:

 

https://www.cloudyni...pes/?p=12423867



#92 LU1AR

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Posted 15 May 2024 - 05:31 PM

I have had a Meade ETX90 for more than a quarter of a century. I did a lot of work to improve it, and shared my experience here:

https://www.cloudyni...etx-90-upgrade/

Upgrades include adjusting the table tripod mount, improving motor power and precision, and fine-tuning RA Dec movements.

Regarding the 90º diagonal that comes installed, it is as good as a $ 300 Baader- but you have to adjust it, so that the beam passes exactly through the center of the baffle. This is accomplished with a collimated laser.
With its little legs it is a real "Tabletop", but I use it on the ground -lying on the sleeping bag- with my elbows resting on the ground. I can stay in this position for hours.

However, when I talk about "Tabletop", I think of my little Hoken 76X700 reflector (Photo). It is very light -fits in a shoe box- is beautiful, easy to handle and intuitive.
It took me a while to collimate the primary mirror (it lacks adjustments) and clean the internal Bird-Jones Lens. It is one of the few telescopes that uses that lens, and it works well.
I had a focuser for .965" eyepieces that were poor quality. I use it with microscope eyepieces or with an adapter and a zoom.
It's a nice conversation piece and sometimes shows the Cassini divission, two Jupiter bands, and excellent lunar images.
 

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#93 Roger Belveal

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Posted 02 July 2024 - 08:37 PM

Just dropping off a picture of my little Celestron Comet Catcher on a table top dob mounts, using a repurpused rifle table...

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#94 k5apl

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Posted 02 July 2024 - 09:56 PM

Here is my tabletop entry:

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