I've been experimenting with using OSC to capture color frames as usual, but then also using OSC to capture red, green and blue filtered frames just to see if I can gain a little extra color control and richness. I have posted previous images of the Horsehead and Flame Nebulae with the ordinary OSC method and wanted to shoot them again the new way for purposes of comparison. So I set up two nights ago (2/22021) with skies looking pretty dark and clear, but Orion was just on the edge of the light pollution to the west so I had to hurry. Somehow, I ended up in the OSC full band images with a reflection arc in the E-130, which I suspect came from the light from the computer screen spilling into the telescope tube (mistakes are what you get when you hurry) and that certainly gave me a headache in post processing. About 10 flats each were taken for all imaging configurations (OSC all band, and OSC with red, green and blue filters) and that helped to reduce vignetting that the 1.25" filters in the wheel cause. The big problem was that after completing one full cycle of image types and getting ready to do another, the stupid clouds came in and that was that. We're about to go in the deep freeze for awhile, says the weather person, and with Orion slipping farther west each night and few and far between clear nights I may not get more data. So I decided to post what I have so far, which took every image processing trick I know to make reasonably presentable because of the short integration time, reflection arc and vignetting.

104 total frames at 30s each, unguided (48 OSC lights, 24 OSC through red, 16 through green and 16 through blue filters) = 52 min = 0.9 h

Conclusion: Using the OSC shots through filters to add color info seemed to make the Flame Nebula display the yellowish cast that I couldn't capture before. The star colors were somewhat better, too, in that they weren't all white or blue-white, some having a golden cast. If you don't have a mono camera and your skies are not really dark, this imaging protocol might be useful.