Venus Image 2024/09/01(UT)
Antonio Cidadao
A.Cidadao
| Antonio Cidadao |
A CD candidate on Aug29 is arrowed in the inset of "Venus 2024-08-28_09-01-AJC.jpg". Hope to be able to image it on Sep03, but the weather has become less stable in the last few days.
I also attach a time-lapse animation obtained today, with a few hours interval ("2024-09-01 Venus Sloan z'-s AJC.gif"), to reveal mid altitude cloud rotation.
Yesterday ("2024-08-31 Venus Sloan z'-s Sloan Y' CH4 1010 AJC.jpg") and today ("2024-09-01 Venus Sloan z'-s Sloan Y' CH4 1010 AJC.jpg"), using a short period of more stable seeing, I grabbed images using 10% of frames (instead of the usual 100 best frames), with Sloan z'-s', Sloan Y', and the 1010nm/38nm filter stacked with the Sloan Y' (this is the filter stack combination I will use for the NS). 3.5ms gain0 for the z'-s', 3.5ms gain110 for the Y' and 10ms gain110 for the 1010nm stack.
The cloud appearance with the three filters is shown individually, in a RGB merging composite, and in two time lapse animations ("2024-08-31 Venus Sloan z'-s Sloan Y' CH4 1010 AJC. gif" and "2024-09-01 Venus Sloan z'-s Sloan Y' CH4 1010 AJC.gif").
I think that the "transmission" versus "reflection" behavior/interpretation of the 1010nm filter results with respect to the Venusian atmosphere is not the same.
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[Antonio Cidadao Oeiras - Portugal] ALPO-Japan Latest
Venus Section
| 2024/08/31
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