Greetings All,
I would like some advice. The desire for "more light" has taken over, and I want to build a 24" Dob. I ground and polished two 20.5" pyrex mirrors about 12 years ago, but never had the proficiency to bring them to the state of near-perfection needed to be completely satisfying. (You know- the "hill-in-the-hole-in-the-hill" problem, with a TDE to boot.)
The other situation is that I am not independently wealthy and am always looking for the financial short-cut.
My question: In your opinion, would I be financially better off to secure good glass and grind and polish a 24" mirror, and then send it off to someone for figuring, OR just pay for the mirror outright and be done with it?
I guess part of this question concerns the cost difference between figuring an existing mirror and a new mirror.
Your comments are most welcome.
-Steve House, St. Charles, MO
I would like some advice. The desire for "more light" has taken over, and I want to build a 24" Dob. I ground and polished two 20.5" pyrex mirrors about 12 years ago, but never had the proficiency to bring them to the state of near-perfection needed to be completely satisfying. (You know- the "hill-in-the-hole-in-the-hill" problem, with a TDE to boot.)
The other situation is that I am not independently wealthy and am always looking for the financial short-cut.
My question: In your opinion, would I be financially better off to secure good glass and grind and polish a 24" mirror, and then send it off to someone for figuring, OR just pay for the mirror outright and be done with it?
I guess part of this question concerns the cost difference between figuring an existing mirror and a new mirror.
Your comments are most welcome.
-Steve House, St. Charles, MO
