Can you identify this scope?
Posted 25 June 2005 - 12:04 AM
i have included a couple pictures here just to see if anyone can identify the year and make of the scope. Any ideas?
p.s. I think I mounted the scope upside down on the mount.
Posted 25 June 2005 - 10:00 AM
Great find! The mount and hardware look like a Cave Astrola from 60's to 70's time frame. The focal length is not a standard for a Newtonian (they did make an f4.5 or f5 as standard, however so the tube could have been assembled from components rather than being a factory original.
Anyway, do a google on "Cave Astrola" and you should find some links to scanned catalogs and such.
Posted 25 June 2005 - 10:56 AM
Posted 25 June 2005 - 11:15 AM
I concur with Dave, your scope is a Cave. The Cave Optical Co. catalog that I have that was received in 1978 has photos and descriptions of their 8" scopes in two places. The "standard" 8" came in focal lengths of f/6, f/7 and f/8. These were available with the rotating rings as clearly shown in your photos. In addition Cave had another series called "Dual-Capability" reflectors which had a more accurately figured mirror with an f/4.5 ratio, and a Carle photo-visual helical focuser or a standard rack and pinion focuser. Eyepieces supplied included a 20 mm erfle with an apparent 80 degree field and either a 10 mm ortho or a 6 mm ortho plus a telenegative amplifying lens (equivalent to a 3x barlow).
This scope came in both "light weight" and "heavy duty" versions. Best way to tell what you have is to look at the finder - the lightweight model came with a 6x30 finder and the heavy duty came with an 8x50 finder. The heavy duty model also has 1.5" shafts vs. 1" shafts in the light weight model. Overall weight is 75 lbs. for the heavy duty and 50 lbs for the light weight model. Yours looks like the heavy duty model which sold new in 1978 for $775.00. The light weight model sold for $625.00.
Hope this info helps!
Posted 25 June 2005 - 11:34 AM
Posted 25 June 2005 - 11:46 AM
Posted 25 June 2005 - 11:51 AM
Posted 25 June 2005 - 11:54 AM
Posted 25 June 2005 - 03:03 PM
Posted 25 June 2005 - 03:58 PM
Posted 25 June 2005 - 08:23 PM
Oh yes : Forgot to measure the distance from the secondary to the eyepice plane ... hence my miscalcualtion on the focal length.
Posted 26 June 2005 - 12:02 AM
Note to the moderators - this company is out of business, so likely a copy of the cover and the particular page this thread's participants seem to be interested in should be ok, however if it needs to be deleted, so be it.
Posted 26 June 2005 - 12:08 AM
Posted 26 June 2005 - 09:17 PM
You might consider sending an inquiry to either Ed or Bob Beck. I remember them telling me that the individual opticians might have signed or initialed the mirrors they made for Cave.
$200 is a GREAT price for that scope.
Posted 27 June 2005 - 10:14 AM
You did VERY well young Jedi..
Take good care of it, and use it well.. You will NOT regret grabbing that deal..
Posted 27 June 2005 - 11:19 AM
Enjoy the planetary views and with that fast ratio, the dso's ought to be just gorgeous too.
Posted 27 June 2005 - 12:27 PM
Posted 28 June 2005 - 09:17 AM
The scope is without doubt the lightweight 8" 4.5. The picture from the catalog page could be the one I have ... finder and all. Thanks for the great scans Barry. Now the only question is where can I get a plaid suit like that for my wife?
Check out your local thrift shop!
VERY good buy ya got, there!!
Posted 28 June 2005 - 10:07 AM
Posted 28 June 2005 - 02:22 PM
Posted 09 July 2005 - 04:03 PM
Ed and Bob Beck (Enterprise Optics) used to make mirrors for Cave, -Tim.
Is Ed Beck still making mirrors? I haven't heard his name mentioned in years!
I once had a 12.5" f/5 from him that was simply superb.
There have been many times when I wished I still had it.
Posted 11 July 2005 - 03:50 PM