Quote:
Originally Posted by casstony
The custom white balance I did today reduced the red too much - seems like the gain in HA sensitivity is lost. I'll try with the proper card still when it arrives.
Same ISO 400 and 2 minutes exposure, again under moonlight -
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Tony, so long as you’re shooting raw, then the white balance used by the camera is irrelevant, it’s just a profile used for display purposes and doesn’t affect the raw data.
Getting a natural colour balance from modded cameras can be tricky with rudimentary tools, but made easier by things like Photometric Colour Calibration in PixInsight - but that is by no means the only colour calibration tool. If you don’t use PI, looking for something that will calibrate based on G2V star types.
The Ha sensitivity isn’t really lost - if you stretched an image of the same object to the same intensity levels, the image from the modded camera would have significantly less noise in the red than the unmodded one. After all, you’ve collected more signal by removing the filter and it will be noticeable.