David's Astronomy Pages
CCD Images - Session 472 (2011-04-29)

Objects Session Notes
Bullet NGC 3972 - Spiral Galaxy with Supernovae SN2011by
Bullet Hickson 68 - Galaxy Group (NGC 5334, NGC 5350 et al)
Bullet Variable Stars
Bullet Photometric Monitoring - Variables
- FS Aur, KR Aur, AM CVn, U Gem, GK Per, ER UMa, SU UMa

- RS CVn attempt (dew)

Bullet Astrometric Monitoring - Nearby Stars
- None
- Evening  session (1.3 hrs)
- Session operated under semi-automated control, with remote monitoring from indoors computer. 
- Ambient Temperature: +4.5 deg C (minimum) 
- CCD operation -25 degC (at 77% average cooling).  
- main objectives of the session was to acquire images of selected project stars for ongoing photometric analysis.

NGC 3972 - Spiral Galaxy  with Supernovae SN2011by

NGC 3972 with SN 2011by  (Leo)

SN 2011by (Type Ia) was discovered 2011/04/26.823 by Zhangwei Jin and Xing Gao
Magnitude at discovery +14.2
(Rochester Supernova site | Discovery Image )

Image below (2011-04-29.93) was taken 3.1 days after SN discovery.
Est Mag +13.3
SN 2011by is marked by white cross hair

Image
CCD Image (cropped)
5 x 90 sec exposure (average combine), 3x3 binning, C Filter 
2011-04-29 22:21 h UT  (#472029-33)
12" LX200R  (at f/9.7) + ST-10XME

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Hickson 68 - Galaxy Group (NGC 5334, NGC 5350 et al)

Hickson 68 / NGC 5334 et al (Canes Venatici)

Image
Annotated CCD Image (50% size)
5 x 120 sec exposure (average combine), 3x3 binning, C Filter 
2011-04-29 22:59 h UT  (#472062-66)
12" LX200R  (at f/9.7) + ST-10XME
[ larger image ]

 

NGC 5350 - detail

Image
CCD Image (100% size, cropped)
Image details as above

 

NGC 5350 - detail

Image
Negative CCD Image (100% size, cropped)
Image details as above

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Variable Stars

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