Re: V image fainter than I

[Michael Koppelman <lolife@bitstream.net>]

I like the idea of longer V exposures so that you get roughly the same 
number of stars in each filter.

Michael

On Mar 18, 2005, at 4:55 PM, droege@snapmail.us wrote:

> My thinking is to try to go a little fainter with the present setup.
> Let's say increase the exposure to 200 seconds.  This will work fine on
> the V camera.  The I camera will have a sky background problem at this
> exposure.  Further, a lot of stars that are not saturated in V will be
> saturated in I so we will lose bright stars.  I admit, not a big loss
> since these are well measured.
>
> By stopping down the I camera the sky background will be reduced and it
> will better match the V camera through the range.
>
> Tom Droege