Telescope/Lens:Sky-Watcher Dob 305/1500 Retractable
Camera:ZWO 462MC
Mount:DOB GoTo
Software:shooting Firecapture
Accessories:ES 5x, zwo adc
Exposure:
3000 x 0.02" ISO/Gain: 221 - zwo ir cut
Kazan, Russia
Aug 22nd, 2022
1 m
1767
12
Jupiter, August 22, 2022, 03:00-03:40 Moscow time, altitude 35 degrees. 50 km from Kazan. SW Dob 305/1500 Retractable ES 5x + ZWO ADC + ZWO IR cut + ZWO 462mc. 50 fps, 800x800, gain 221, exposure 20.0 ms. Stacked 300 frames out of 3000 in AS!3 with wavelets, derotation of 6 clips, 60 seconds each.
Decided to shoot with the retractable Dob for the second day in a row. Today, the GRS emerged by 3 AM. This concludes my Jupiter imaging at 35 degrees altitude for 2022. I’ll see how it looks next year at 45 degrees and later at 56 degrees. It was very interesting to try planetary imaging with what is, for me, a visual instrument.
The detail is decent, but I would recommend using a bit less Barlow lens. The resolution of a 12-inch telescope is about 114/305 = 0.37 arcseconds. With average seeing conditions, I would consider this value to be about 3 camera pixels. The pixel size of the ZWO 462 is 2.9 microns. Therefore, Jupiter will be about 385 pixels in diameter, and from this, the Barlow magnification should be roughly 3.2x.
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