|
I prefer the red one. The green one comes about commonly with narrowband even with CCD cameras. Its because these objects dominate in Ha. S11 is usually the dimmest and O111 is often not that bright.
What it takes is:
1. Longer exposure time and longer sub exposure times with S11 in particular and with DSLRs possibly try higher ISOs.
2. When combining you'll have to make S11 say 4 times and O111 say 3 times the amount of weighting compared to Ha.
3. You'll have to crank up the curves on red to bring out the S11 and get those nice mustardy colours otherwise all you'll get is green with a small amount of blue in spots.
Same with CCDs.
The red really needs to be pushed hard in narrowband processing and lots of exposure otherwise its all green from now on.
Greg.
|