Solar region from June 17, 2021, with sunspot group No. 2833 in visible, UV, and IR wavelengths.

 Posted: Jun 18th, 2021
Technical Info
Telescope/Lens: МАК 102/1300 mm
Camera: Nikon D5300
Mount: Levenhuk Ra ATZ
Software: PIPP, AutoStakkert, RegiStax, GIMP
Accessories: UF/IR Cut, ZWB2 (UG1) Filter, IR-Pass 685 nm SvBONY
 Moskva Yugo-Zapadnaya, Russia
 Jun 16th, 2021
1636
Crop of the solar region using different light filters:

1) VIS: Visible light range, UF/IR Cut filter by SvBONY, a stack of about 250 frames from a 400-frame video. ISO 200, 1/400 s.
2) UF: ZWB2 (UG1) 365 nm filter, transmitting UV with slight IR leakage; a stack of about 250 frames from a 400-frame video. ISO 12800, 1/50 s.
3) IR: IR-Pass 685 nm filter by SvBONY, a stack of about 290 frames from a 450-frame video. ISO 5080, 1/100 s.
Resolution: 1860x492 px
Scale: 90 KB
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