[AZ-Observing] Re: Flats and Bias


Brian Skiff wrote:

>  
>
>>> would placing a sheet of red cellophane
>>> over the objective end of the telescope work...?
>>>      
>>>
>
>     Folks have tried all sorts of subterfuges....
>  
>

Have they tried shooting the telescope and ccd camera down a very long 
vertical shaft? At the right speed the wavelength should match the 
wavelength of the red sky color of a night sky.
Stan
--
See message header for info on list archives or unsubscribing, and please 
send personal replies to the author, not the list.

Other related posts: