Comet C/2020 R4 (ATLAS)
Posted: 1 May 2021
Friday, 30 April 2021, was clear and once again very windy during the daytime, but the wind calmed down late afternoon.
Open: Friday, 30 April 2021, 1811 MST
12" f/8 LX600 w/StarLock
2" 24mm UWA eyepiece
1821 MST: after opening the observatory I relaxed on the observatory patio bench.
1908 MST: sunset.
1921 MST: back inside the observatory. Prepared the D850 DSLR for imaging.
1925 MST: LX600 ON, StarLock OFF, High Precision OFF.
Slewed to Comet C/2020 R4 (ATLAS). It was not yet visible in the bright twilight sky.
1930-2000 MST: relaxed on the bench while waiting the stars come out.
2002 MST: back at the 12" telescope. Comet C/2020 R4 (ATLAS) was now visible, 102X. The coma was very visible.
Mounted the D850 DSLR at prime focus + focal reducer, focused on the star Arcturus, locked the 12" mirror, and slewed back to the comet.
2021 MST: StarLock ON.
This is Comet C/2020 R4 (ATLAS), StarLock autoguided, 1 minute, ISO 12800, White Balance 4550K. A short tail is visible pointing down in the photograph.
2037 MST: StarLock OFF.
2044 MST: viewed M83 (Southern Pinwheel Galaxy), 102X. It was too low in the southeastern sky for imaging. As the next day would be a busy one, I skipped imaging it this session.
2046 MST: LX600 OFF.
2055 MST: took a Sky Quality reading.
Close: Friday, 30 April 2021, 2058 MST
Session Length: 2h 47m|
Conditions: Clear, SQM 21.19
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