Paul Maxson Celestron C14, Mewlon 250, Orion EON120, Flea3, ASI120MM. Those who say it can't be done need to stay out of the way of those doing it. http://www.sunspot51.com
Quote:Nice to have good seeing! Good work Paul but those limb effects are troubling. Any ideas why your getting those?Glenn
The Hole in the Trees Skybox
CPC1100, SXVR-H694, ASI120MM
Imaging automation by Sequence Generator Pro and FireCapture
Paul B. Jones http://www.astrobin.com/users/bunyon/
Orion 203mm F3.9, TPO 304mm F4, SkyWatcher F4 Coma Corrector, QC PRO 9000, ASI120MM, TV5XPM, Atlas EQ-G (EQ MOD), Canon EF 200mm F2.8, Canon 6D, 14mm F2.8, Atik 314L+, 4 X 2" Nautilus with 2" Orion LRGB Filters.
DSLR peltier cooler
DSLR Processing Tutorial
Planetary Processing Tutorial
Quote:Paul, I haven't been able to reproduce an image without the edge effects. Looking at the pre-wavelet images, they definitely show the effects as well, so it must be either in the stacking program or in the acquisition.Do you always see this? If so, it might be those vibrations, though I'd think that would mess up the center of the disk as well.
Quote:When running the Flea3 in FireCapture the appearance of the planet should not change when checking and unchecking the gamma box if it is set to 1024. You can see the gamma effect by noting whether or not the histogram shifts left or right. For example a setting of 1000 will shift it a little to the left. This should read gamma 0.977 in Flycap. A setting of 1024 should give a gamma of 1.0. So 1024 should be ok, but I'd recommend unchecking the gamma box most of the time. I have mistakenly left the gamma in a low setting used for focussing, like 0.8, and taken data on Jupiter. I did get limb or onion rings in that case. What having gamma set to greater than 1.0 would do I cannot say, but I don't think it would be good for Jupiter.Now whether a setting of gamma 1.0 on a given Flea3 is actually gamma 1.0 would have to be bench tested. To do this requires a calibrated light source to do properly. It can also be a function of gain so its not an easy thing to measure. I tried once using f stops on a camera lens, but even the best Nikon lenses are not geometrically accurate enough.Glenn
C11 Edge HD, C925 XLT TEC 140 (#352) w/ AT65EDQ Skywatcher 100ED w/ WO66SD ZenithStar, ES 80mm Apo Sirius, Atlas EQ-G, "Atlosmandy" Pro AZ/EQ-G, T-Rex Apex,Porta II DBK21AU04, DBK21AU618, DMK21AU618, DMK31AU03, ASI120mm/mc, Hutech 500DH Beaglehaven Observatory (BYO #168)