On the morning of May 28, 2021, I photographed Jupiter very productively – in the visible range, as well as infrared 850 nm and CH4 (890 nm). The atmosphere was worse than average. I tried derotation in CH4 – successfully. The QHY5III462C camera continues to delight with excellent IR sensitivity. I was fortunate that the Great Red Spot was on the visible side of Jupiter at the time of shooting.
Equipment:
-Celestron NexStar 8 SE telescope
-Meade LX85 mount
-long Barlow lens 2x
–ZWO ADC
-QHY IR-cut filter
–QHY5III462C camera.
Processing: stacking 800 frames from 4530 (Autostakkert), wavelets (AstroSurface), derotation (WinJUPOS, 5 stacks).
Location: Russia, Anapa, backyard.
At IR 850 nm, the image is radically different from the visible range – the Great Red Spot becomes bright. In an unstable atmosphere, shooting in IR 850 nm makes sense, though with a drop in resolution.
Equipment:
-Celestron NexStar 8 SE telescope
-Meade LX85 mount
-long Barlow lens 2x
–ZWO ADC
–ZWO 850 nm filter
–QHY5III462C camera.
Processing: stacking 800 frames from 3021 (Autostakkert), wavelets (AstroSurface).
Location: Russia, Anapa, backyard.
There is even less signal in CH4, the image is noisier. At shutter speeds of about 33 ms, you have to significantly increase the gain, which leads to alignment errors in PIPP, and a less noisy picture would not hurt to add frames in Autostakkert. Increasing the exposure to 50 ms (20 fps) had a positive effect on the result. With the QHY5III178m camera, for a more or less adequate result, it was necessary to increase the shutter speed to 100-200 ms, and then there were big problems with cropping and centering the frames. I also tried derotation of CH4 stacks – WinJupos ate the stacks without any problems. It also turned out that with a CH4 filter, you can quite successfully shoot even at dusk in a very bright sky.
Equipment:
-Celestron NexStar 8 SE telescope
-Meade LX85 mount
-long Barlow lens 2x
–ZWO ADC
-ZWO CH4 methane filter
–QHY5III462C camera.
Processing: stacking 1000 frames from 1814 (Autostakkert), wavelets (AstroSurface), derotation (WinJUPOS, 9 stacks).
Location: Russia, Anapa, backyard.