23278Re: What the heck....a donut near M81?
- Feb 2, 2004--- In firstname.lastname@example.org, mike_from_tn@y... wrote:
> I did the light leak test last night with a 500watt halogenNot to belabor the point, but you did shoot the dark as a "covered
> worklight near the scope and all is well. Looks like a dark frame.
> The artifact while present in the Ir filtered object and flat
aperture light frame" right? If you told it to shoot a dark, then the
shutter would not open. The shutter needs to be open to be a
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