I gave up astrophotography about 1975. Too damned hard. I would use
the autocollimator to bench test the focus accuracy of lenses.
Chuck Norcutt
Johnny Johnson wrote:
> At 09:28 PM 2/8/2008, Chuck Norcutt wrote:
>
>> All reflex Polaroids have a nice large first surface mirror inside useful
>> for making an autocollimator.
>
> Hi Chuck,
>
> So, what do you collimate? Are you into astro photography?
>
> Later,
> Johnny
>
> __________________________
> Johnny Johnson
> Cleveland, GA
> mailto:jjohnso4@xxxxxxxxxx
>
>
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