Quote:
Originally Posted by gregbradley
Did you bin your narrowband 2x2? (I take it your QHY8 is one shot colour?).
Doing 1x1 maybe wasting exposure time as with the Bayer Matrix only every 5th pixel is sensitive to red, every 5th for blue and every 3rd for green (RGGB). The other filtered pixels may be mainly only contributing noise.
Greg.
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I always shot bin1x1. I take the red channel for Ha and Sii and the Blue and green combined for Oiii. I never tried binning 2x2. I'm always afraid of losing resolution.