Quote:
Originally Posted by ausastronomer
I will take the homework out of it for you.
The Meade 10" Schmidt Newtonian uses a 10"/F4 spherical primary mirror. Your 10" Meade Starfinder has a 10"/F4.5 parabolic primary mirror. The two mirrors have an entirely different shape and focal length and are not interchangeable as Satchmo said, without complete refiguring.
Keep your eyes open on Astromart for a 2nd hand mirror, or a damaged Meade Starfinder. A new or refigured 10"/F4.5 mirror would cost more than the scope is worth, considering you can buy a complete new 10"/F5 GSO dob for about $700 to $800.
Cheers,
John B
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Thanks John I at present intend to get the Mirror recoated probably next wet season when I can't use it. I did do the homework but to be honest I couldn't understand much of what I read but after your explanation it all became clear. Even with the coating loss on my mirror I can still get some great views even of nebula and galaxies.