David's Astronomy Pages
CCD Images - Session 250 (2008-01-06)

 Previous Imaging Session
Images
(S249) 		  Home
Images
Sessions 		  Home
Home
Page		   Next Imaging Session
Images (S251) 		 
Objects Session Notes
Bullet NGC 5829 - Spiral Galaxy with Supernova 2008B
Bullet AD Leo - UV Ceti Type Variable
Bullet Astrometric & Photometric Monitoring
 - U Gem (dwarf nova)
- U Her (mira variable)
- SY Cnc, KR Aur (variables)
- RZ LMi, ER UMa (variables)

- Attempts made to image SS Cyg, Gliese 725,  CN Leo but affected by cloud
- Early morning session (3.4hr). Collected Dawn Flats at end of session 
- CCD operation of -20 degC (at 62% average cooling). 
- main objectives were to acquire images of certain selected stars of ongoing photometric and astrometric analysis, in particular U Her
- opportunity was taken to acquire image of recently discovered supernova 2008b in NGC 5829 and acquire baseline images of AD Leo (a UV Ceti type flare star)

NGC 5829 - Spiral Galaxy with Supernova 2008B

NGC 5829 with Supernova 2008B (Bootes)

2008B is a Type 2 Supernova discovered 2008/01/02.84 by Koichi Itagaki
 at ? mag +16.6 
(Rochester Supernova site | Discovery Image | )

Image below (2008-01-06.26) was taken 3.4 days after discovery. 
Measured magnitude +16.1 (C)

Several adjacent galaxies :
 IC 4526 (catalog mag +15.8), PGC 53720 (catalog mag +16.9),
PGC 53703 (catalog mag +17.5), PGC 1685296 (catalog mag +18.1), 
PGC 53702 (catalog mag +17.6),  PGC 1684237 (catalog mag +17.7),
PGC 1684042 (catalog mag +17.0)
Image
Annotated CCD Image
5 x 120s exposure (average combine), 2x2 binning, C Filter,
2008-01-06 06:14 hUT (#250045-49)
 
NGC 5829 / SN 2008b - detail 
 Image
Annotated CCD Image (250% size, cropped)
Image details as above
 

Back to Top

AD Leo - UV Ceti Type Variable 

AD Leo (Leo)

AD Leo is a UV Ceti (flare) star, which was imaged for assessing its 
potential use in a a future observing programme to 
record a flare event

Image

Annotated CCD Image
3 x 15s exposure (average combine), 2x2 binning, C Filter 
2008-01-06 07:11 hUT (#250087-93) 

  

AD Leo - Reference Stars
 Image showing AD Leo with comparison and check stars

Image  

Annotated CCD Image
3 x 10s exposure (average combine), 2x2 binning, V Filter 
2008-01-06 07:16 hUT (#250097-101) 

  
  AD Leo & Reference Star details
(V) :  AD Leo (GSC 1423:174 / SAO 81292)
(C) :  GSC 1423:165  (Bt: --.--, Vt 10.71)
(K) :  GSC 1423:144

 

AD Leo - Short Duration Images Tests
10s, C Filter,  Good S/N
AD Leo S/N:  284,  
Comparison Star S/N: 108
[ 10s V filter,  Poorer S/N
AD Leo S/N:  77  
Comparison Star S/N: 36 ]

Image  

Annotated CCD Image
10s exposure, 2x2 binning, C Filter 
2008-01-06 07:16 hUT (#250100) 

  

Back to Top

Astrometric and Photometric Monitoring

Back to Top

This Web Page: CCD Images - Session 250  (2008-01-06)
Last Updated : 2015-05-16
Site Owner : David Richards
Home Page : David's Astronomy Web Site