Re: [APML] M13 with Canon 1Ds

[Jerry Lodriguss <jerry@astropix.com>]

>I am trying to color balance the 1Ds and your comments are most welcome.
>It appears that the Canon 1Ds has the following white balance factors:
>
>H-alpha = 3.65, Red = 1.02, Green = 1.0, OIII = 1.043,
>H-beta = 1.0, and Blue = 1.01. The factors are based on exposures
>of a white card and uniform light gray cloudy sky.


Hi Mike,

Color balancing under a light gray cloudy sky will make the results biased 
because of the high color temperature of the illumination.

Jerry

Astronomical photography: http://www.astropix.com



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