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Two Herschel 400 Open Clusters

Posted: 26 March 2023

Open: Saturday, 25 March 2023, 1834 MST
Temperature: 50°F
Session: 1844
Conditions: Clear

Equipment:
12" f/8 LX600 w/StarLock
2" 24mm UWA eyepiece

Camera:
iPhone 13 Pro Max
D850 DSLR

1841 MST: Sunset.

1842 MST: LX600 ON, StarLock OFF, High Precision OFF.

Viewed the gibbous Venus, 102X.

Viewed the crescent Moon, 102X.

Prepared the D850 DSLR for imaging later.

1903 MST: Took this handheld iPhone 13 Pro Max afocal 102X photo of the Moon using NightCap Camera (ISO 34, 1/710sec, 1X lens).

photo

1907 MST: High Precision ON.

Viewed NGC2362 (open star cluster), 102X. There is some nebulosity associated with this cluster but it was not visible in the bright twilight sky.

I had planned to observe more Herschel 400 Catalog objects this night, but I decided to defer them until after the Full Moon.

Mounted the D850 DSLR at prime focus, focused on the star Sirius, and locked the 12" mirror. Slewed to NGC2362.

1928 MST: StarLock ON.

Took this StarLock autoguided image (5 minutes, ISO 3200, White Balance 4550K) of NGC2362 (open cluster). Some nebulosity is barely visible.

photo

1951 MST: Dome partially OFF.

Took this StarLock autoguided image (1 minutes, ISO 1600, White Balance 4550K) of NGC2355 (open cluster).

photo

2000 MST: StarLock OFF, High Precision OFF.

Viewed NGC2355 (open cluster) and NGC2362 (open cluster), 102X. Nebulosity in NGC2362 was now faintly visible. I have now observed and imaged 139 Herschel 400 objects since starting the project in October 2022.

2003 MST: LX600 OFF.

2006 MST: Dome ON.

Close: Saturday, 25 March 2023, 2017 MST
Temperature: 48°F
Session Length: 1h 43m
Conditions: Clear


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