Re: [APML] Re: IC 2948 image

[axm2@canopus.physik.uni-potsdam.de]

On Sun, 3 Mar 2002, Herm wrote:

> are you guys talking about true TDE (visible thru a star test) or just
> the aluminized bevel at the edge of the mirror?.. my R200SS does not
> seem to suffer from TDE but the bevel does affect images with bright
> stars..regardless its a very good idea to mask out the mirror clips
> and the bevel.

>From the view in my knife-edge focusing tool I had the impression of a
true turned-down edge. Looking at the images from different R200SS owners,
there seems to be some variation in mirror quality.

Clear skies,

Axel

-- 
Axel Mellinger  <http://canopus.physik.uni-potsdam.de/~axm/astrophot.html>




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