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CCD Images - Session 169 (2006-12-23)

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Objects Session Notes
C/2006 M4 (Swan) - Comet
UGC 14 - Spiral Galaxy & Supernova 2006sr
M31 - Extragalactic Nova: M31 2006 16
NGC 2237 - Nebula (Rosette Nebula) - attempted mosaic
Astrometric & Photometric Monitoring
- HD 5501/5513 (eclipsing variables)
- SS Cyg (dwarf novae)
- BL Lac (BL Lac blazer)
- U And, W And (Mira variables)
- Z And, RU Peg (variables)
- Groombridge 1618 (nearby star)
- AXP Stars 
- TrES-2 (exosolar planet sol)
- 7 hr session operated under fully automated control (handy given it was Christmas Day)
- CCD operation of -25 degC (at 56% average cooling). .
- main objective was to acquire images to monitor brightness chnages in selected variable stars, and acquire follow up images of  Nova 16 in M31 and SN 2006sr in UGC 14, and selected Comets. Opportunity was however taken to acquire image mosaics of M48 and M50.
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- More Notes
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C/2006 M4 (Swan) - Comet

Comet C/2006 M4 (Swan)
(passing through starfield in Aquila)

 
CCD Image 
5 x 60s exposure (average combine, aligned on comet), 
2x2 binning, C filter,  Linear scale 
2006-12-23 17:39h UT (#169014-18)

  

False Colour CCD Image 
Log brightness scaling (3000 ADU range)
(details as above)

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UGC 14 - Spiral Galaxy & Supernova 2006sr

UGC 14 (Pegasus) with SN 2006sr
2006sr was discovered 2006/12/12.95 by Doug Rich
(Rochester Supernova site | Discovery Image | Reference Image)

Image below (2006-12-23.777) was taken 11 days after discovery. 
Estimated magnitude of 2006sr  is  +16.0 (C filter). 
Annotated CCD Image
3 x 180s exposure (average combine), 2x2 binning, C Filter 
2006-12-23 18:39 hUT (#169075-77)

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M31 - Extragalactic Nova : M31 2006 16

M31 part (Andromeda)
Extragalactic nova 'M31 2006 16' was discovered in M31 on 2006/12/15.943 by 
WeCAPP; Kamil Hornoch  with an apparent magnitude of +17.8 
(Extragalactic Novae page at Rochester Supernova site | Discovery Image | Reference: 2006-12a)

Nova is right at limits of detectability in the images below.

CCD Image 
5 x 3 min exposure (average combine), 2x2 binning, C Filter
2006-12-23 18:52h UT (#169079-83)

False CCD Image  
Square Root brightness scaling
(image details as above)

Processed CCD Image  
Gradient removed. Linear brightness scaling.
(image details as above)

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NGC 2237 - Nebula (Rosette Nebula) - attempted mosaic

NGC 2244 - Open Cluster / NGC 2237 - Nebula (Monoceros)
CCD Image Mosaic (20% size)
180s exposure, 2x2 binning, C Filter 
2006-12-23 21:42 hUT to 2006-12-23 02:22 hUT (#169258-345)

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Astrometric and Photometric Monitoring

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This Web Page: CCD Images - Session 169 (2006-12-23)
Last Updated : 2008-01-13
Site Owner : David Richards
Home Page : David's Astronomy Web Site