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CCD Images - Session 401 (2009-11-30)

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Objects Session Notes
Bullet NGC 7789 - Open Cluster
Bullet Photometric Monitoring - Variables
- RX And, U And, W And, HR Aur, KR Aur, S Cyg, SS Cyg, AM Her, BL Lac, CY Lyr, FG Sge, U Sge, V Sge, RR Tau

RX And, Z And, TT Ari, DY Per, RU Peg Attempts (failed due to frost on lens, windshake or moonlight)
Bullet Astrometric Monitoring - Nearby Stars
- Barnards Star 61 Cyg

HH And, Groombridge 34 Attempts (failed due to frost on lens)
 
- Evening session (4.1 hr). Difficult conditions, slight wind at times, condensation/frost forming on front corrector lens , requiring hair dryer
- Session operated under semi-automated control with remote monitoring
- Ambient Temperature:  Initially 0.5 degC falling to -2.0 degC minimum by end of session
- CCD operation -25 degC (at 53% average cooling).  
- main objective of the session was to acquire images of key selected stars for ongoing photometric and astrometric analysis. 
- opportunity taken to acquire images of the open cluster NGC 7789

NGC 7789 - Open Cluster

NGC 7789 (Cassiopeia) 

Image
CCD Image (50% size)
3 x 30 sec exposure (average combine), 3x3 binning, C Filter 
2009-11-30 22:34 h UT  (#401294-96)
12" LX200R  (at f/5.7) + ST-10XME
[larger image, 75% size]

 

NGC 7789

Image
CCD Image (50% size)
10 x 15 sec exposure (median combine), 3x3 binning, C Filter 
2009-11-30 22:38 h UT  (#401298-307)
12" LX200R  (at f/5.7) + ST-10XME

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This Web Page: CCD Images - Session 401  (2009-11-30)
Last Updated : 2015-05-16
Site Owner : David Richards
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