Re: [Fwd: ] ATMJ article on grinding a 6" by Russell and Germann

[Mel Bartels <mbartels@efn.org>]

I looked closely at the twin 6"ers set up at RTMC-95.  One was of
decidedly poor quality: gave a terrible image of Jupiter and the star
test revealed a badly turned edge and overcorrected rest of the mirror,
if I remember correctly.  The other scope was better and gave a decent
planetary image, but the star test showed obvious undercorrection.

-- 
Clear skies, Mel Bartels    Programmer/Analyst, and amateur astronomer
atm, atm-digest list-owner  mailto:mbartels@efn.org
homepage: http://www.efn.org/~mbartels
Motorize A Dob: http://zebu.uoregon.edu/~mbartels/altaz/altaz.html