Re: AW: [APML] Simeis Tricolor and reverse B&W

[lkt <tan@cox.net>]

Andreas,

 I have attempted this before quite a few times. It is easy for me to
shoot multiple reds since this is the shortest exposure but I have found
that this only helps the red channel. When combined with the green and
blue channel, the lower SNR of these two channels compromises and swamps
the overall SNR of the color image. I did not make any measurements to
substantiate this so it is purely based on my eyes seeing the final
results. To do multiple exposures for green and blue is also possible
but I would have to expose over multiple evenings.

Loke


Andreas Roerig wrote:
> 
> Hi Loke,
> 
> That is one of the best Simeis 147 I've ever seen!
> Have you thought about shooting the red channel two or three times and
> use it as a luminance layer?
> 
> Keep this Schmidt photos coming.
> 
> Andreas
> 
> :=================================
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