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Help Identifying Older Telescope

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#1 ArvidaScope

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Posted 17 May 2021 - 12:25 PM

Hi Everyone... I am completely oblivious to the world of telescopes, but we have purchased a home that came with a rather intricate looking scope and was wondering if you all would be able to help me decipher which type of telescope this is as well as what it would sell for?  I really appreciate any and all help you can provide with.

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#2 Jim Davis

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Posted 17 May 2021 - 12:41 PM

Since it is an Optical Guidance Systems telescope, it is a Ritchey-Chretien design. This telescope is designed to provide a very flat field of view for attached cameras. Whoever owned it was using it for visual observing, since it has an eyepiece wheel attached to the bottom. That is a very expensive scope, probably repurposed from a government or research project.

 

Edit: Company website - https://opticalguidancesystems.com/


Edited by Jim Davis, 17 May 2021 - 12:43 PM.

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#3 siriusandthepup

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Posted 17 May 2021 - 12:47 PM

Well, the good news is that you have a very hardcore telescope setup there. Some amateur will want it for sure.

 

Optical Guidance Systems = expensive.

 

Looks like 6 Pentax eyepieces - good money there as well.

 

Take some measurements, we need to figure out which specific telescope that you have. Measure the tube diameter and length -  that will help.

 

Looks like a Byers gear drive. Measure the diameter of that bronze gear. $$

 

Report back with additional info and we will go from there.

 

Also, OGS made Classical Cassegrains in addition to Ritchey-C.

 

smile.gif


Edited by siriusandthepup, 17 May 2021 - 12:58 PM.


#4 Mr. Pepap

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Posted 17 May 2021 - 12:50 PM

Woah! This is a product from Optical Guidance Systems. It uses a Ritchey-Chretien design, which is a specialized Cassegrain telescope that uses a set of hyperbolic mirrors to eliminate off-axis errors in the optics. Based on this and the fact that the previous owner had an eyepiece wheel attached to it, they were probably doing some hardcore visual.

 

I can't tell which model it is unless you tell us the aperture diameter, but as for resale value, I looked at OGS's pricing list, and it looks like these things go for some serious $$$:

 

http://opticalguidan...-price-list.pdf

 

Nice find!


Edited by Mr. Pepap, 17 May 2021 - 01:08 PM.


#5 scopewizard

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Posted 17 May 2021 - 01:11 PM

https://snco.org/yoc...tien-telescope/

 

Like very much like it.


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#6 siriusandthepup

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Posted 17 May 2021 - 01:21 PM

Your location is important. This is a case of "come to your house and disassemble it for transport".

 

Some of your potential buyers are gonna just be too far away.

 

So please include your location (not your address!), just the closest large town.


Edited by siriusandthepup, 17 May 2021 - 01:21 PM.


#7 P_Myers

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Posted 17 May 2021 - 01:27 PM



Would make the center piece for a garage sale smile.gif

#8 nemo129

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Posted 17 May 2021 - 01:28 PM

Wow, all we got with our house was an old couch left in the basement for which we had to pay a disposal fee at the dump! Are you sure you want to sell it? Looks like it is in a domed observatory as well. 


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#9 rgsalinger

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Posted 17 May 2021 - 01:55 PM

Please note that selling astronomy related items must take place in the classified section of the site. 

Rgrds-Ross



#10 siriusandthepup

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Posted 17 May 2021 - 04:58 PM

Ross,

 

You are correct, of course.

 

We are just trying to help a civilian (non-astronomer) figure out what he got with his home purchase.

 

We don't know exactly what it is yet either.

 

As a member of 1 day only he will be eligible to sell here in 30 more days.

 

Please allow us to assist with figuring out the identification of the particular model telescope that he owns.

 

respectfully.

Ed


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#11 MJB87

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Posted 17 May 2021 - 05:30 PM

I note with interest that a search on "Arvida" (from the name of the OP) and "telescope" brings up images of an observatory that seem to match what is being discussed here.


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#12 sanbai

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Posted 17 May 2021 - 06:04 PM

Those Pentax XW have good value, and are easy to sell and ship everywhere. Looking in the classifieds section past ads will indicate you how much to get for them (the 30 and 40 mm are more expensive, the other cost the same). Hopefully they are in good shape. If the optics have dust, ask or look for advise before cleaning. Not a big deal if done correctly.

The rest of the equipment seems to be a fine one, but as other note you better find a local buyer. It will need some knowledge to dismantle properly, and shipping may be prohibitive. Otherwise, good luck finding proper local help and buyer that pays shipping.

Another option may be selling just the gears of the mount and the individual optical components of the telescope (primary and secondary mirror, maybe spider). That may allow reasonable shipping fees and be able to get most of the potential value.

#13 siriusandthepup

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Posted 17 May 2021 - 06:42 PM

Further investigation:

 

The former home owner was Tom Bales, who purchased the telescope. No scope details have turned up yet.

 

Still looking for scope ID.

 

At least we solved the mystery of why anyone would leave such a cool telescope behind. lol

 

<edit> scan through these pics from a Wall Street Journal article shows Bales at the eyepiece end of the scope. (second row of pics) click on it to see more.

 

Still no scope ID, but the article states value of scope reported to be $75,000 in the 2009 article.

 

interesting.....


Edited by siriusandthepup, 17 May 2021 - 06:57 PM.

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#14 sanbai

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Posted 17 May 2021 - 07:33 PM

Given the price of the house and the potential of the astronomical equipment my advise would be to actively find someone to do a proper restauration and to run some observing sessions. Views may be memorable. Looking at one of the pictures with Mr. Bale, the mirror has a significant diameter (20"? I'm bad at such estimations).

Being in Florida I certainly would look at Jupiter and Saturn this summer. It may be impressive!


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