Herschel 400 Catalog imaging
Posted: 21 January 2023
Open: Friday, 20 January 2023, 1820 MST
Conditions: Mostly clear
1827 MST: LX600 ON, StarLock OFF, High Precision OFF.
Viewed Venus, Saturn, Jupiter, and Mars, 102X.
Viewed M42 (Orion Nebula), 102X.
1834 MST: High Precision ON.
Viewed NGC651 (M76, Little Dumbbell Nebula, planetary nebula), 102X. It would be the first Herschel 400 Catalog imaging object this night.
Prepared the D850 DSLR for imaging.
I then did some light tests of my new Opple Light Tester 3 Pro light meter. I will be using it for some International Dark-Sky Association (IDA) activities.
Next, I mounted the D850 DSLR at prime focus, focused, and locked the telescope primary mirror.
1905 MST: StarLock ON.
I took the following Herschel 400 Catalog images, StarLock autoguided, exposures 1, 2, or 5 minutes, ISO 1600 or ISO3200.
NGC651 (M76, Little Dumbbell Nebula, planetary nebula)
NGC869 (open star cluster)
NGC884 (open star cluster)
NGC720 (galaxy, satellite)
1959 MST: StarLock OFF.
Viewed NGC2024 (Flame Nebula), 102X.
2012 MST: LX600 OFF.
2018 MST: Took a Sky Quality reading.
Close: Friday, 20 January 2023, 2022 MST
Session Length: 2h 02m|
Conditions: Clear, SQM 20.85
Here are two very recent articles on Light Pollution:
Light pollution is skyrocketing
Citizen scientists report global rapid reductions in the visibility of stars from 2011 to 2022
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