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DSLR Astrophotography: NGC247, NGC246, & Caldwell 51

Posted: 24 November 2017

Open: Thursday, 23 November 2017, 2131 MST
Temperature: 63°F
Session: 1169
Conditions: Mostly clear

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

D7200 DSLR

2137 MST: LX600 ON, StarLock OFF, High Precision OFF.

Viewed NGC247 (galaxy), 102X.

Then began setting up for imaging. Mounted the D7200 DSLR at prime focus + focal reducer. Focused on the star Aldebaran using a Bahtinov Mask and locked the mirror. Slewed to NGC247.

2151 MST: StarLock ON. There were some thin clouds visible near my first two imaging targets. That caused lots of poor seeing and poor autoguiding. Had to take several exposures to get good tracking. All these images were cropped from the full-frame image.

NGC247 (galaxy), StarLock autoguided, 5 minutes, ISO 6400, White Balance 3570K

NGC246 (planetary nebula) & satellite, StarLock autoguided, 1 minute, ISO 6400, White Balance 3570K

Caldwell 51 (irregular galaxy), StarLock autoguided, 5 minutes, ISO 6400, White Balance 3570K

2250 MST: StarLock OFF. Ended imaging. Clouds were increasing.

Viewed M42 (Great Nebula in Orion), 102X.

2258 MST: LX600 OFF.

Close: Thursday, 23 November 2017, 2306 MST
Temperature: 60°F
Session Length: 1h 35m
Conditions: Partly cloudy

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