Try increasing gamma if dark sections aren't distinguished

Try increasing gamma if dark sections aren't distinguished

Tuesday, December 27, 2022

More mars: northern polar hood, bonus jupiter

 After imaging the mars occultation (which occurred at low altitude), I waited a few hours for mars to reach maximum elevation and increased the magnification.

A layer of clouds, referred to as the northern polar hood, covers the north pole in these images.  Surface structure is more evident in the IR images which cut through cloud cover. 

Mars 12/8/22  07:26.1 UTC

probably snowing on the north pole.  


also got some bonus time on jupiter:



Jupiter 2022-12-08 04:36.3 UTC

Jupiter 2022-12-08 04:29.9-04:42.6 UTC


Image details:
average seeing
Mars 12/8/22  07:26.1 UTC
Jupiter 12/8/2204:29.9-04:42.6
eastbluff, CA
celestron 11" Edge HD
ZWO ASI 290MC (one shot color camera)
2x powermate
baader IR/UV block filter
ZWO IR pass 850 nm for IR images

Jupiter 
Image reduced by 50% due to poor seeing
10x90 sec
FPS (avg.)=42
Shutter=2.581ms
Gain=351 (58%)
Histogramm=41%


Mars
RGB 6x120 sec
FPS (avg.)=145
Shutter=1.000ms
Gain=351 (58%)
Histogramm=46%

IR 2x120 sec
FPS (avg.)=147
Shutter=5.000ms
Gain=351 (58%)
Histogramm=33%

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