Bintel optics any good ?

[doppler (Rick)]

Originally Posted by Tandum

I'm a firm believer in you get what you pay for but .. an F12 Reflector? What century is this .. where do you buy one? The tube would be 2 to 3 meters long. And it has nothing to do with an F4 GSO newt which is where this started.

It is always interesting the way conversations evolve in a thread. A lot of good info, and as I would probably do more visual astronomy I think a longer focal length will be the best choice for me. I particulary like the idea of getting a 12" f5 dob and fabricating some rings so that I can mount it to my equtorial mount or just use it as a dob.

A 12" f12 would be huge! I found this pic of a 12" f7 and mind you the model is apparently 6' tall to make the scope look less daunting. ps the mount used is similar to mine (same manufacturer).

[wulfgar]

I have seen this telescope described as F9. But F7 is the usual jumping off point for large planetary Newtonian's.

http://tech.groups.yahoo.com/group/s...y/message/1529

ASLC and ALPO founder, Walter Haas, is selling his primary telescope, a 12.5-inch Newtonian. He is moving out of his house into smaller quarters and needs to divest himself of some of his equipment.

His telescope is f/8.1 with a Cave mirror, but it may have been reconfigured by someone in Connecticut. It is on a German Equatorial Mount with an electric clock drive. It is not a Go-To and is currently located in Las Cruces.
Walter was told the telescope is worth about $1,000, but he is willing to negotiate. If you are interested, please call him directly at 575-522-0763.
I found this tiny picture on the Web of Walter and his telescope.

http://l.yimg.com/a/i/space.gif

jeff Beish takes it a step further with a 16" F7.


http://www.alpo-astronomy.org/jbeish/Tippy_Jeff_16.jpg

http://www.alpo-astronomy.org/jbeish/RADIO_DISH.htm