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CCD Images - Session 247 (2007-12-25)

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Images (S248)
 
Objects Session Notes
Bullet NGC 520 - Peculiar Galaxy (ARP 157)
Bullet Astrometric & Photometric Monitoring
- SS Cyg (dwarf nova)
- BL Lac (Blazar)
- RU Peg, DY Per (variables)
- Evening session (1.6hr).  Poor transparency, Cloud developing 
- Problem performing automated short mapping job using new TPoint Model.  Manually controlled mapping was required instead.
- CCD operation of -20 degC (at 58% average cooling). 
- -main objectives were to acquire images of certain selected stars of ongoing photometric and astrometric analysis
-opportunity was also taken to acquire gallery images of certain deep sky objects.

NGC 520 - Peculiar Galaxy (ARP 157)

NGC 520 / ARP 157 (Pisces)

Image

CCD Image
180 sec, 2x2 binning, C Filter
2007-12-25 18:06hUT (#247037)

 

NGC 520 / ARP 157 - detail
(uneven background due to uneven cloud 
and artefacts from moon light)

Image

CCD Image
5 x 180 sec, 2x2 binning, C Filter
2007-12-25 18:12hUT (#247037-41)

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Astrometric and Photometric Monitoring

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This Web Page: CCD Images - Session 247  (2007-12-25)
Last Updated : 2015-05-16
Site Owner : David Richards
Home Page : David's Astronomy Web Site