An interesting article.
Gary
Carpe Noctem
Sent from the Astro Cave via my MS Surface Pro 4 Tablet
From: C14_EdgeHD@... [mailto:C14_EdgeHD@...]
Sent: Friday, March 25, 2016 6:27 PM
To: C14_EdgeHD@...
Subject: [C14_EdgeHD] Re: New 11" EdgeHD
My C11 (NON-Edge) had a loose primary that would not maintain collimation when I moved it (especially from one side of the Meridian to the other). The solution was to pull the corrector, get my hand down the tube and tighten up the primary mirror retaining ring, which I found was almost loose feeling (not anywhere near hand tight even). After that it maintains collimation rather better. It didn't completely solve my own mirror flop issue but it's smaller in magnitude now.
My C11 primary is also tilted slightly and can't be corrected without more work. My 7" Meade Mak didn't have any of these problems (neither OTA has a mirror lock, and I don't "image" but I do use video cameras). I agree that the Meade is made better and has less problems in my experience. Also saw no problems on a friend's ACF 8" F10. I used his ACF for 3 years, and my Mak at 500x and 666x respectively, visually, quite often (on double stars).
Regards,
Alistair G.
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