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Using a modded Canon SLR for non-astro photography results in pinkish hue of *all* pictures.
Unless you:
- use Custom WB and calibrate it to the existing light
- use a Baader or Astronomik clip-in filter which has the same function as the original filter which is replaced by a blank one during modding. For EF-S bodies only NOT using original Canon EF-S lenses (Canon EF lenses and all 3rd party lenses do fit).
- use WB shift and setting to +9 green/cyan.
I know this from theory, I have never used a modded camera.
But with proper exposure and post processing most red nebulas do show very well with an unmodded camera if you do not want to compromize regular photography and buy a dedicated Canon for AP.
Example : the attached photo of red nebulas in Cygnus is taken with an unmodded EOS 7.
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