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CCD Images - Session 206 (2007-08-22)

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Objects Session Notes
Bullet NGC 4036 - Spiral Galaxy with Supernova 2007gi
Bullet NGC 7320 - Galaxy Cluster (Stephan's Quintet)
Bullet NGC 1058 - Spiral Galaxy
Bullet M71 - Globular Cluster
Bullet Astrometric & Photometric Monitoring
 - SS Cyg (Dwarf Nova)
- BL Lac (Blazar)
- U And, W And (Mira variables)
- Z And, SU UMa, SZ Her (variables)
- Barnard's Star, 61 Cyg, Gliese 412, Groombridge 34, Groombridge 1618, Groombridge 1830, And HH, HIP 67593 (Nearby Stars)
- Session duration 4.6 hr
- CCD operation of -15 degC (at 61% average cooling). .
- main objective was to acquire images of selected variable stars and nearby stars for ongoing photometric and astrometric  monitoring.
- additional polar alignment checks where made using Drift Method.
- More Notes
-

NGC 4036 - Spiral Galaxy with Supernova 2007gi

NGC 4036 (Ursa Major) with SN 2007gi
2007gi is a Type 1a Supernova discovered 2007/07/31.49 by Koichi Itagaki 
at mag +16.3, and has brightened significantly through early August.
(Rochester Supernova site | Discovery Image | Reference Image)

Image below (2007-08-22.91) was taken 22 days after discovery. 
Estimated magnitude of 2007gi  is  +13.0 (C filter). 
Image
Annotated CCD Image
5 x 120s exposure (average combine), 
2x2 binning, C Filter, Linear Scale
2007-08-22 21:44 hUT (#206042-46)

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NGC 7320 - Galaxy Cluster (Stephan's Quintet)

NGC 7320 + galaxy cluster (Andromeda)
Image
CCD Image, 
5 x 120 sec exposure (average combine), 2x2 binning, C Filter
Linear Scale
2007-08-22  23:41 h UT (#206153-57)
 
NGC 7320 + galaxy cluster - detail
Image
CCD Image,
Square root brightness scaling,
Image details as above
 
NGC 7320 - detail
Image
CCD Image,
Square root brightness scaling, False Colour
Image details as above

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NGC 1058 - Spiral Galaxy

NGC 1058 (Perseus) 
The bright star like object just to upper right of galaxy centre
is amalgamation of  light from a foreground star in our galaxy and 
supernova 2007gr in NGC 1058 galaxy.
The image does not have sufficient resolution to 
separate the two objects, though a slight elongation is noted.
(Rochester Supernova site | Discovery Image )
Image
4 x 120s exposure (average combine), 
2x2 binning, C Filter, Linear Scale
2007-08-22 22:55 hUT (#207096-99)
 

NGC 1058 - detail 
Image
False Colour CCD Image, 
Square root brightness scaling, 
False Colour (Inverse Spectrum)
Image Details as above

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M71 - Globular Cluster

M71 (Sagitta)
Image
CCD Image, 
3 x 60 sec exposure (average combine), 
2x2 binning C, Filter, Linear Scale
2007-08-23  00:03 h UT (#206167-69)

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Astrometric and Photometric Monitoring

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This Web Page: CCD Images - Session 206 (2007-08-22)
Last Updated : 2015-05-16
Site Owner : David Richards
Home Page : David's Astronomy Web Site