Dudley
journeyman
Reged: 09/03/07
Posts: 5
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Hi! John,
I don't believe that they were made in any large quantity. I think that it was a limited market, £100 was an awful lot of money in those days, so only the very rich could afford such a luxury!
I've added a copy of one of the pages from Pearson's book.
The Cary is bottom left - but note the subtle differences between the models
Dudley
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Dudley
journeyman
Reged: 09/03/07
Posts: 5
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John - Hi!
Thanks for the info. and the welcome!
I'm still struggling a bit - but I'll get there.
I expect you know John Gregory? He's an old friend of mine.
Dudley 
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BrianL
member
Reged: 08/07/08
Posts: 11
Loc: California
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I was an acquaintance of the maker of the 8" Sky Research
RFT back in the 70s. I am still interested in the 8" f/2.9 and would like to obtain one to use... or have one made. I
sold the one that I bought years ago and I regret that I do
not still have it now. If anyone knows where I can find one
please let me know. Thankyou, BrianL 
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BrianL
member
Reged: 08/07/08
Posts: 11
Loc: California
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I am also looking for any photos of the Sky Research 8"- f/2.9 RFT. Where or from whom might I find them... if anyone
knows...? Thankyou, BrianL 
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2manyscopes
sage
Reged: 09/16/06
Posts: 258
Loc: Pacific NW
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There are plenty of scopes more rare but the 6" f/15 Cave Astrola refractor seems to be rather rare. I'm sure others exist but in 10 or so years of looking I've only located two of 'em. One is in Athens Greece and the other is in my collection. I'd really like to meet others who own them.
Bill
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1962 8" f/8 Cave Astrola Model "B" Deluxe
1970 8" f/6 Cave Astrola Lightweight Deluxe
1976 6" f/15 Cave Astrola refractor
8" f/6 Richard Fagin Dob
198? Celestron SP-C8
2003 Celestron Fastar C-14
Meade 6" f/3.6 Schmidt Newtonian
4" f/15 ATM refractor circa 1959
4" f/6 BW Optik Semi-Apo refractor
Celestron C102
University Optics 80mm f/6.25 refractor kit scope
William Optics 80SD refractor
Celestron branded Losmandy G-11
Untold boxes of assorted Astro Gear!
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JohnG
sage
Reged: 12/16/06
Posts: 357
Loc: Wake Village, Texas - East Tex...
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BrianL,
Here's a photo of my 8 inch f/2.9 Sky Research rich field. I bought this new back in the 80's as a larger portable scope and for the wide field views. There's more discussion about these scopes on earlier pages of this thread. A couple of other guys have, or have owned, these, too.
The spider and 8 inch Novak mirror cell aren't part of the Sky Research scope. Since you knew him, what can you tell us about the manufacturer?
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John Gerrald
Unitron Model 142
8 Inch f/7 Custom Assembled
8 Inch Celestron/Vixen f/5 Newtonian
6 inch Celestron/Vixen f/5 Newtonian
8 Inch f/2.9 Sky Research Newtonian
Celestron Polaris Equatorial Mount
Celestron Super Polaris Equatorial Mount
Celestron 11 x 80 Comet Hunter Binocuars
Bausch & Lomb 7 x 50 Binoculars
A few vintage eyepieces
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skyward_eyes
Vendor-Woodland Hills/Focus
Reged: 12/12/06
Posts: 3352
Loc: California
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Dang I love wide field scope I wouldnt mind that scope in my line up. Nice find.
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Kevin LeGore
kevin@telescopes.net
Woodland Hills Camera & Telescopes
www.telescopes.net
Focus on Astronomy Outreach Project
www.focusonastronomy.org
Director and Founder
k.legore@focusonastronomy.org
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Mike I. Jones
Carpal Tunnel
Reged: 07/02/06
Posts: 2874
Loc: Fort Worth TX
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I have a 5" f/15 Tinsley Maksutov that's an oldie. Here's a shot showing the freshly machined 1.25" adapter I made for it so I can take bird pictures with my Canon XSi.
Peter Abrahams of the Antique Telescope Society was able to locate the original Tinsley spec sheets and advertising brochures for it and scan and email them to me. Apparently there were only 100 ever made. Anybody else have one?
The telescope optics are great, but I don't care for the prism in the right angle adapter. The scope's a lot sharper without it in the path.
I use it mostly for long-range bird photography. But it's perfect for photographing Walter crater rays and the famous "X". Just the right scale. I need to work on it so I can mount it on the Losmandy dovetail plate on my Paramount.
Mike
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56 mirrors, lenses, 16" f/6 Newt, 6" f/10 refractor, TOA-130S, Tinsley 5" f/15 Mak, 6" f/4 RFT, Coronado PST. Still to build: 24" f/10 Modified Dall-Kirkham, 10" f/26 Mak, 8" f/12 apo, spectrohelioscope, Herrig, Schupmann, and others.
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skyward_eyes
Vendor-Woodland Hills/Focus
Reged: 12/12/06
Posts: 3352
Loc: California
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I bet that little scope packs a punch. Looks like a heavy scope.
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Kevin LeGore
kevin@telescopes.net
Woodland Hills Camera & Telescopes
www.telescopes.net
Focus on Astronomy Outreach Project
www.focusonastronomy.org
Director and Founder
k.legore@focusonastronomy.org
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woodsman
Carpal Tunnel
Reged: 03/12/08
Posts: 2409
Loc: Colorado Springs, CO
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Quote:
There are plenty of scopes more rare but the 6" f/15 Cave Astrola refractor seems to be rather rare. I'm sure others exist but in 10 or so years of looking I've only located two of 'em. One is in Athens Greece and the other is in my collection. I'd really like to meet others who own them.
Bill
Could you possibly post a picture of the Cave 6" refractor, or if you have posted it elsewhere, direct me to that thread? Thanks, Rich
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artisticwoods
C-14 Orange Tube, New Old C-11 Orange Tube, C-8, C-5, C-90 Astro Model, C8 Schmidt Camera 8" f1.5, C5.5 Schmidt Camera f1.65, SPI 42mm f/19 Refractor, Sears 90mm f/15.56 Ref, Sears 80mm f/15 Ref, Scope 60mm f/11.7, Sears 50mm f/12, Unitron model 128 60mm/900mm
My Cat can Beat up your Dob....
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clintwhitman
Caveman
Reged: 01/01/07
Posts: 5125
Loc: CALI SoEasyACavemanCanSlewIt
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Bill Whats up with your web page??? Caveman
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Clint & Debbie Whitman (aveman JOIN US AT CSPAMP V Classic Telescopes, 9" AP ThePEARL, 1946 4" Tinsley Saturn Telescope. 1970 4" Unitron 155c,1954 100mm Unitron Brass 152. 1950s Nippon Kogaku refractors 5 CM, 6.5 CM. 1965 10" F8 Cave Astrola, G-11 ST2000xm
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jeffg
member
Reged: 02/13/07
Posts: 92
Loc: Irvine CA
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One of the rarest telescopes I've seen was a Vega Maksutov. Here's a picture of one at the San Jose club swap meet a couple of years back. 
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Jeff
14", 10", & 4.25" Dobs
and some other stuff
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Mark Jenkins
sage
Reged: 06/25/08
Posts: 439
Loc: Wisconsin
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Quote:
What are the rarest telescope you know of?
Here are the ones I know of:
Astro-Physics Telescopes:
AP 235 Fast Max Mak-Newt.
The top view.
Underside.
Me, getting it ready at Chiefland Stary Party 2003.
I loved that telescope! I really hated selling it but I do not regret doing so as it ended up being useful to someone and I was not using it. It is simple, elegant perfection of the Maksutov Newtonian 
The scope riding piggy back is a 1 off production prototype of an AP 150mm Mak Cass. It is an awesome little Mak as well. I did not own that one.
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Astro-Physics 130mm f6.3 StarFire EDF 'Gran Turismo'
Astro-Physics AP Mach1 GTO
EarthWin PFS-B
Canon EOS 50D Hap Modified
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Mike I. Jones
Carpal Tunnel
Reged: 07/02/06
Posts: 2874
Loc: Fort Worth TX
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The Tinsley's only a 5" aperture and not much for DSO's, but it's well made and pretty much achieves DL at f/15. Here's an example shot from last night taken with the adapter I made and my XSi. Wish you could see the picture at full 12 MPix resolution. It makes an incredible telephoto for long-distance bird photography.
Mike
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56 mirrors, lenses, 16" f/6 Newt, 6" f/10 refractor, TOA-130S, Tinsley 5" f/15 Mak, 6" f/4 RFT, Coronado PST. Still to build: 24" f/10 Modified Dall-Kirkham, 10" f/26 Mak, 8" f/12 apo, spectrohelioscope, Herrig, Schupmann, and others.
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bierbelly
Postmaster
Reged: 01/23/04
Posts: 6179
Loc: Sterling, VA
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I've been quite busy, lately. Sorry. See avatar. Only two made.
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12" DSH
8" f/4 Vega MakNewt
6" MN66
TV85
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Ramon Miro
super member
Reged: 08/09/04
Posts: 140
Loc: Rockville, MD
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My Steinheil 60mm f/18 refractor dating from the late 1940s is pretty rare. I know of only one other sample and its in Germany.
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Lew Chilton
Carpal Tunnel
Reged: 10/20/05
Posts: 1642
Loc: SoCal
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I guess the rarest scope is the only one that exists - that would be my Murray Scope, built in 1959. Here's the way it looked in about 1962.
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I don't get no respect, but my scopes do! 
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1961 Swift 60mm model 839 (2); TV-102/GM-8; 1959 8" f/6 Treckerscope; 1959 8" f/7.4 Murray Scope; 1978 4" Edmund Astroscan; c. 1992 4-inch Celestron-Vixen SP-C102; c. 1950 20X60 Saturn spotting scope; 1963 7X50 Nippon Kogaku binoculars; Unitron #114 alt-az mount (Swifty-tron); Takahashi TOA-130S/EM-200USD3.
Sold: my Fecker Celestar-4 after 40 yrs. of ownership (1970-2010).
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ukcanuck
Vendor (Skylight Telescopes)
Reged: 11/07/06
Posts: 1278
Loc: London, UK
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Ok, I'll chime in too. This is certainly the rarest scope I've ever seen:
In the latter stages of the 1800's, T. Cooke & Sons of York/England, developed what is considered by many to be the first Apochromatic refractor. Few of these examples (called the Cooke Photovisual) survived intact through the years...many of the iron piers were turned in to be melted down as scrap to help the war efforts, and most of the triplet objectives developed a cloudy/milky haze due to chemical reactions in the glass.
This is the 4"/F18 model, on what the company catalogue amusingly refers to as their 'portable mount!'  Some of you will have seen this scope before, as it is the subject of an ongoing clean up.
...it's still ongoing... 
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Richard
The new Skylight AR101/15
Skylight premium refractors: See what you've been missing. 
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memento
super member
Reged: 08/19/08
Posts: 137
Loc: 51N 7E
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Hi everyone,
Quote:
The Celestron pictured here is the very first Celestron, although its maker, Tom Johnson, hadn't coined the name yet.
The just completed scope, an 18-inch pictured here, was not a Schmidt-Cassegrain but a classic Cassegrain, as I recall.
judging by the pic, this scope is a Nasmyth Cassegrain. It also does not have a Schmidt plate. You can see that there is a third mirror mounted directly above the main mirror, and the eyepiece is on the upper fork of the fork mount. (although if the scope is moved in RA, the eyepiece would also move ....)
cheers,
Thomas
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Meade ETX125
Tasco 60mm f/5.5 early 70s, rebuilt
(Previous scopes: Meade 2080 LX3, Celestron C90 Astro)
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BrianL
member
Reged: 08/07/08
Posts: 11
Loc: California
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Does anyone know where I can find a photo of the rare
white tube Coulter Odyssey 8 OTA?
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