Optica b/c telescopes
Posted 11 May 2007 - 03:39 PM
Eyepieces seem to be the most commonly available items on the secondary market. Complete telescopes are much rarer. I currently own their 4-inch and 6-inch pedestal Newtonians. For a brief discussion about the 6-inch reflector telescope type in www.rca-omsi.org/ When in the Rose City Astronomer's website click on Newsletter at the middle top of their webpage. From the archived back issues of the newsletter select the April 2007 issue and look at an article called "A LUNAR GALLERY--IV."
How many of our members own either a 4-inch or 6-inch Optica b/c reflector? I have found that the quality of these Japanese Royal Astro Optical Industries Co., Ltd. products imported by Optica b/c of Oakland, Calif. to be outstanding. The optical and mechanical performance is simply extravagant!
Posted 11 May 2007 - 04:15 PM
Posted 11 May 2007 - 05:23 PM
Posted 11 May 2007 - 06:56 PM
Their 100-page+ filter book is also second to none in technical information.
Posted 11 May 2007 - 08:57 PM
How do the b/c eyepieces compare to pentax or Zeiss?
Posted 11 May 2007 - 09:10 PM
Posted 12 May 2007 - 02:32 PM
I have a 4" Optica b/c (Royal LN-4E)aquired a while ago at E-bay. It is of superb quality.
Posted 12 May 2007 - 03:10 PM
Over on Amart there is an Optica b/c spectroscope being offered. I almost purchased an old GOTO Kogaku spectroscope a while back, this seems MUCH fancier (I would guess that the boxy housing has a second reference tube with scale).
I purchased and still have an Optica B/C spectroscope in the midsixties. I believe its cost was around $50.00-$60.00. I rarely use it and it's in excellent condition. At the moment it's in the window of the local public library as part of an Astronomy Day display. I believe I posted a picture of it to CN a year or so ago. It's not for sale.
Posted 12 May 2007 - 09:35 PM
If you have a vintage Tasco Model #7TE-5 60mm equatorial refractor the mounting head will fit directly onto the Optica b/c pier mounting. This particular combination, which I encourage collectors to try, greatly improves the stability of the Tasco (plus I like the appearance of Optica b/c piers). This particular combination can be seen by typing in www.rca-omsi.org/ When in the Rose City Astronomer's website click on Newsletter at the middle top of the webpage. From the archived pdf files of back issues of The Rosette Gazette look at the May 2006 issue for an article entitled "A LUNAR GALLERY."
I also purchased my Optica 4-inch from Ebay several years ago, but my unit has the additional electric motor drive (identical to Tasco's electric #7TE-5 synchronous drive). Optically and mechanically the Optica b/c 4-inch is beyond reproach.
Posted 13 May 2007 - 12:03 AM
I enjoy my little Optica very much, it's very portable. I think that there is also a 6" version.
Posted 13 May 2007 - 01:53 PM
The Optica b/c 6-inch uses a metal tube assembly (like the 4-inch) of excellent quality. It has a rack-and-pinion 1.25-inch focuser, 12X40mm viewfinder, and includes an unusual "inspection-port" door near the mirror end of the tube. Optically it is the equivalent of a superb Criterion RV-6 6-inch and comes close to my Cave Astrola 6-inch f/8 in image quality.
The metal optical tube assembly is oversized so that upon first glance you might think it is an 8-inch. The mounting is a little undersized for the size and weight of the tube assembly. Everything down to the smallest nut and bolt is of the utmost quality!
Optical b/c also sold larger 8-inch and 10-inch Newtonians, but the cost was literally "astronomical."
Posted 13 May 2007 - 03:21 PM
Great pictures! I did not know that the 6" Optica was f/8.7...
In 1979 $479 was good money,more expensive than a 6" Cave Astrola. It seems that the 6" Optica b/c version is rare, not speaking about the 8" or 10 ".
Posted 13 May 2007 - 05:15 PM
4 inch F/10 $522.95
6 inch F/8.6 $1130.95
8 inch F/8 $6248.95
10 inch F7.2 $6369
12 inch F/7.5 Custom, price on request
108mm Observatory refractor $4506.50
150mm Price on request
Hey don't you like those prices ending in .95 or .50 cents?
As you can see these were and are premium scopes, however I've never seen one.