My Astro Images [page: 18]

Jupiter 23.09.2011

f/20, 23:37 and 00:00:

f/20 bin 2, UV 23:51 and CH4 23:48:

Animation

Jupiter 16/17 09.2011

f/30; Rlum-RGB 23:12:

f/30; YRGB 23:59 UT; soft and strong:

f/30; YRGB 00:29 UT; soft and strong; yellow luminance channel:

UV, CH4 bands, false colors: CH4,VIS,UV and VIS-CH4,VIS,UV; 23:28 UT:

MS LifeCam webcam shots - atmospheric dispersion on a color image, CH4 band:

Moon 17.09.2011

f/10, 610 nm longpass:

f/30, 510 nm longpass + ADC:

Jupiter 11.09.2011

CH4,VIS,UV / VIS-CH4,VIS,UV 23:16:

610 nm lum channel (redlum) and Redlum-RGB 23:05:

YRGB (510 nm longpass) 23:08:

Jupiter 06.09.2011

Red-lum; 22:42 UT:

CH4 22:51 and false color CH4,L,L:

Jupiter 04.09.2011

f/10; methane band and false colors: CH4-RLUM-UV: 23:11 03.09 UT:

f/20; RLUM-RGB, LRGB, Lum, RLUM; 00:11 UT:

f/30; YRGB, Y; 2:43 UT:

f/30; YRGB 3:07:

Animation

Jupiter 03.09.2011

LRGB and RLUM-RGB; 00:35 UT:

Yellow lum channel (Y), Y-RGB in light and strong deconvolution:

Yellow: Shutter=15.11ms, Gain=489, Histogramm=90%, Noise=4.9546504, 3110 frames.
R: Shutter=15.11ms, Gain=792, Histogramm=86%, Noise=10.744064, 2142 frames
G: Shutter=15.11ms, Gain=759, Histogramm=92%, Noise=9.6309395, 2518 frames
B: Shutter=15.11ms, Gain=786, Histogramm=90%, Noise=10.408668, 2771 frames
Standard and lowered gamma (the bright-brown stream looks interesting - and how it "hooks up" to the darker stram in the south belt):

WinJUPOS versions:

YRGB 1:42 UT:

Jupiter moons, guided (on Jupiter itself) methane band shots - 15 sek x ~100, 50 min timelapse:

Methane band caught only 10,5 mag star and no inner moons (but they may have been transiting somewhere). At 15 sec exposures DSI III Pro at f/10 + bin 2 slightly overexposures Jupiter in that band :)
Gain/exposure time test for L filter (IR/UV Cut) and Basler Ace / ICX618:

At max gain and very fast framerate the nois is very big and the stack is grainy (equaly deconvolved). From 10 ms up the quality is much better. In winter I used max gain and 30-40ms exposures on Saturn and that wasn't so noisy - so that fast framerate also clocks the CCD much over public sheets (60 FPS) so that also must add some readout noise.
Low readout noise seems to be the key. Maybe when sCMOS or EMCCD go cheap (2 years or more?) they will kick out CCDs from planetary imaging giving < 1 e- readout noise? :)