An Oops, Omega Centauri Globular Cluster
Posted: 26 May 2022
Open: Wednesday, 25 May 2022, 1847 MST
Conditions: Clear, breezy
12" f/8 LX600 w/StarLock
2" 24mm UWA eyepiece
2" UHC filter
1855-2000 MST: Relaxed on the observatory patio bench.
1924 MST: Sunset. Calm now.
Prepared the D850 DSLR for imaging.
2002 MST: LX600 ON, StarLock OFF, High Precision OFF.
Slewed to M104 (Sombrero Galaxy). It was not yet visible in the twilight sky.
2007 MST: Dome OFF.
2008-2045 MST: Relaxed on the bench again to watch the stars come out.
Viewed M104 (Sombrero Galaxy), 102X.
Mounted the D850 DSLR at prime focus + UHC filter, focused on the star Spica using a Bahtinov Mask, and locked the 12" telescope primary mirror. Then slewed to M104.
2051 MST: StarLock ON.
I took several images of M104 (Sombrero Galaxy) and then Omega Centauri (globular cluster) over a nearly one hour period. I then discovered that I had left the Bahtinov Mask on the telescope! STUPID! I had wondered why the images on the camera screen preview looked so faint.
I removed the mask and took this StarLock autoguided image of Omega Centauri (globular cluster), 1 minute, ISO 800, White Balance 4550K.
As the next day would be a busy one, I had to end my imaging session.
Viewed Omega Centauri (globular cluster), 102X.
2157 MST: LX600 OFF.
2200 MST: Dome ON.
2204 MST: Took a Sky Quality reading and reported the result to Globe at Night.
Close: Wednesday, 25 May 2022, 2209 MST
Session Length: 3h 22m|
Conditions: Clear, SQM 21.12
I have received this International Dark-Sky Association cap and T-shirt.
I also received this Cassiopeia Observatory keychain.
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