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Eta Carinae with no flats, darks, bias etc
Eta Carinae, as captured by an unguided el-cheapo Nikon DSLR atop an 8" f/5 Newt. 90 x 30-second subs of three different ISOs (800, 1600, 3200).
My experience with autoguiding has sucked. Not sure whether the problem is my (very old) laptop or the fact I'm using a far-too-big finderscope (600mm refractor). Or quite possibly something else entirely. I fumbled with it for several months late last year and gave up since 2017 began. I've just been experimenting with processing larger stacks of shorter subs since then.
My best results seem to come from several stacks of different ISOs into several final TIFs, stacking those again, and editing in Lightroom. Occasionally I'll combine several of those different TIFs in Photoshop, but I try to avoid that.
I've come to the conclusion that darks, flats and bias do nothing good for my images. I've tried them all, many many times, in different combinations, and the results are simply better without them literally every single time.
Thoughts, suggestions? Has anyone else had similar experiences with DSLRs, ie discovered that you're better off just using lights on their own?
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