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CCD Images - Session 273 (2008-03-07)

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Objects Session Notes
Bullet NGC 5820 - Elliptical Galaxy and companions (ARP 136)
Bullet NGC 5907 - Spiral Galaxy (Splinter Galaxy, Herschel II-759)
Bullet NGC 4490 - Spiral Galaxy with Supernovae 2008ax
Bullet NGC 4656 - Spiral Galaxy
Bullet M67 - Open Cluster
Bullet Astrometric & Photometric Monitoring
- U Gem (dwarf nova)
- RX And, Z And, AQ CMi, CV CMi, SY Cnc, U Mon, FU Ori (variables)





- Evening session (5.2hr).  
Temperature +3.5 to +2.5 degC
- CCD operation of -25 degC 
(at 78% average cooling). 
- main objective was to acquire images of certain selected stars for ongoing photometric, in particular U Gem & RX And. 

NGC 5820 - Elliptical Galaxy and companions (ARP 136)

NGC 5820 / ARP 136 (Bootes)
Elliptical galaxy with nearby fragments

Image
Annotated CCD Image
4 x 180s exposure (average combine), 2x2 binning, C Filter 
2008-03-07 23:10 hUT (#273109-12)
 

NGC 5820  - detail

Image 
Negative CCD Image (200% size scaling)
Image details as above

 

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NGC 5907 - Spiral Galaxy (Splinter Galaxy, Herschel II-759)

NGC 5907  /  Herschel II-759  (Draco)

Image
CCD Image
4 x 180s exposure (average combine), 2x2 binning, C Filter 
2008-03-07 23:32 hUT (#273116-19)
 

NGC 5907  - detail

 Image
Negative CCD Image 
Image details as above

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NGC 4490 - Spiral Galaxy & Supernovae 2008ax

NGC 4490 with SN 2008ax (Canes Venatici)
2008ax (Type II) was discovered 2008/03/03.45 by LOSS; Koichi Itagaki
Magnitude at discovery +16.1 (C)
(Rochester Supernova site | LOSS Discovery Image
 | Itagaki Discovery Image | Reference Image)

Image below (2008-03-08.03) was taken 4.6 days after discovery.
Estimated Magnitude +15.2 (C)

Image
Annotated CCD Image
7 x 120s exposure (average combine), 2x2 binning, C Filter 
2008-03-08 00:48 hUT (#273136-42)
 

NGC 4490  - detail

Image 
CCD Image 
Square Root Scaling
Image details as above

 

Image 
False Colour CCD Image 
Square Root Scaling, Inverse Spectrum
Image details as above

 

NGC 4490 before SN2008ax
(Feb 2008)

NGC 4490 with SN 2008ax 
(Mar 2008
)

Image Image
Annotated CCD Image
7 x 120s exposure (average combine), 
2x2 binning, C Filter 
2008-02-14 04:00 hUT (#263704-10
Annotated CCD Image
7 x 120s exposure (average combine), 
2x2 binning, C Filter 
2008-03-08 00:48 hUT (#273136-42)

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NGC 4656 - Spiral Galaxy

NGC 4656 (Canes Venatici)
Hidden Treasures catalog object 67
[ Hidden Treasures ]

Image
Annotated CCD Image
5 x 180s exposure (average combine), 2x2 binning, C Filter 
2008-03-08 01:09 hUT (#273147-51)
 

NGC 4656  - detail

Image 
Negative CCD Image 
Image details as above

 

Image 
False Colour CCD Image 
Square Root Scaling, Inverse Spectrum
Image details as above

 

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M67 - Open Cluster

M67 (Cancer)

 Image
CCD Image 
9  x 30s exposure (av. combine), 2x2 binning, C Filter
2008-03-08 01:41h UT (#
273167-75)

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Astrometric and Photometric Monitoring

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This Web Page: CCD Images - Session 273  (2008-03-07)
Last Updated : 2023-10-16
Site Owner : David Richards
Home Page : David's Astronomy Web Site