David's Astronomy Pages
Images - Session 455 (2011-02-12)

Objects Session Notes
Bullet NGC 470 & NGC 474 - Spiral Galaxies (ARP 227)
   
Bullet Photometric Monitoring - Variables
- FO And, RX And, Z And, S Cyg, SS Cyg, BL Lac, CZ Ori

- SZ Lyn attempt (aborted)

   
Bullet Astrometric Monitoring - Nearby Stars
- EV Lac
- Early evening  session (1.4 hrs), ending when wind and cloud developed
- Session operated under semi-automated control, with remote monitoring from indoors computer. 
- Ambient Temperature: 2.0°C  (minimum)
- CCD operation -25°C (at 62% average cooling).  
- main objectives of the session was to acquire images of selected project stars for ongoing photometric analysis.

NGC 470 & NGC 474 - Spiral Galaxies (ARP 227)

NGC 470 & NGC 474 / ARP 227  (Pisces)
faint circular concentric rings around NGC 474 
are not visible in this image.
Image
Annotated CCD Image (50% size)
3 x 120sec exposure (average combine),  3x3 binning, C Filter
2011-02-12 18:58 h UT  (#455036-38)
12" LX200R  (at f/9.7) + ST-10XME
 
NGC 470,  Spiral Galaxy - detail
Image
CCD Image (100% size, cropped)
Image details as above
 
NGC 474 -  detail
faint circular concentric rings around NGC 474 
are not visible in this image
Image
CCD Image (100% size, cropped)
Image details as above

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