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CCD Images - Session 168 (2006-12-20)

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Objects Session Notes
Bullet M31 - Extragalactic Nova: M31 2006 14
Bullet NGC 752 - Open Cluster (Caldwell 28)
Bullet Astrometric & Photometric Monitoring
- HD 5501/5513 (eclipsing variables)
- SS Cyg (dwarf novae)
- BL Lac (BL Lac blazer)
- U And (mira variables)
- Z And  (mira variables)
- 4.8 hr session, largely operated under automated control. Very frosty conditions.
- CCD operation of -25 degC (at 53% average cooling). .
- main objective was to acquire images for monitoring variable stars and a recent nova in M31
- opportunity was taken to acquire image mosaic of open cluster NGC 752
- More Notes
-

M31 - Extragalactic Nova : M31 2006 14

M31 part (Andromeda)
An extragalactic nova (M31 2006 14) was discovered in M31 on 2006/11/25.468
by Koichi Itagak, with an apparent magnitude of +17.5 
(Extragalactic Novae page at Rochester Supernova site | Discovery Image | Reference: 2006-11a)

Image below (2006-12-20.92) shows the previous position of the 
nova (white marker) but it is noted to have faded to below detection limits.
Estimated magnitude >17.5 . Limiting Mag +17.4 to +18.6

Image

CCD Image 
5 x 3 min exposure (average combine), 2x2 binning, C Filter
2006-12-20 23:22h UT (#168094-98)

 

Earlier image from 2006-12-05 (nova at mag +16.3 )

Image

CCD Image 
4 x 3 min exposure (average combine), 2x2 binning, C Filter
2006-12-05 20:11h UT (#158076-79)
 
 Sequence of images of M31 Nova 2006 14 
from 2006-11-26 to 2006-12-20
Image 

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NGC 752 - Open Cluster (Caldwell 28)

NGC 752 / Caldwell 28 (Andromeda)

Image 

CCD Image Mosaic - 5x8 frames (30% size)
60s exposure,   2x2 binning, C filter
2006-12-21 00:20h UT (#168126-65)
[larger image, 60% size]

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Astrometric and Photometric Monitoring

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This Web Page: CCD Images - Session 168 (2006-12-20)
Last Updated : 2015-05-16
Site Owner : David Richards
Home Page : David's Astronomy Web Site