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CCD Images - Session 465 (2011-04-03)

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 (S466) 		 
Objects Session Notes
Bullet IC 2973 - Spiral Galaxy & Supernovae 2011ao
Bullet NGC 2431 - Spiral Galaxy with Supernovae candidate
Bullet Variable Stars
Bullet Photometric Monitoring - Variables
- RX And, U And, W And, Z And, CV CMi, R CrB, U Gem, CZ Ori, FO Ori, FU Ori, DY Per, GK Per

- FS Aur attempt (aborted)
Bullet Astrometric Monitoring - Nearby Stars
- Groombridge 34
- Early evening  session (4.6 hrs),
- Session operated under semi-automated control, with remote monitoring from indoors computer. 
- Ambient Temperature: Initially +7.0 deg C falling steadily to +3.0 deg C  (minimum) by session end.
- CCD operation -25 degC (at 73% average cooling).  
- main objectives of the session was to acquire images of selected project stars for ongoing photometric analysis.

IC 2973 - Spiral Galaxy with Supernovae 2011ao

IC 2973 with SN 2011ao (Ursa Major)

SN 2011ao (Type Ia) was discovered 2011/03/03.434 by A. Kroes, Jack Newton, and Tim Puckett
Magnitude at discovery ? +15.3
(Rochester Supernova site | Discovery Image )

Image below (2011-04-03.84) was taken 36 days after SN discovery.
Est Mag +14.1
SN 2011ao is marked by white cross hair
Image
Annotated CCD Image (cropped)
4 x 90s exposure (average combine), 3x3 binning, C Filter 
2011-04-03 21:40 hUT (#465100-04)
12" LX200R  (at f/9.7) + ST-10XME

Earlier Image of IC 2973 with SN 2011ao - 2011-03-23
 25 days after SN discovery, estimated mag +13.8
Image
Annotated CCD Image (cropped)
5 x 90s exposure (average combine), 3x3 binning, C Filter 
2011-03-23 23:11 hUT (#464237-41)
12" LX200R  (at f/9.7) + ST-10XME

Earlier Image of IC 2973 with SN 2011ao - 2011-03-19
 20.2 days after SNdiscovery, estimated mag +13.8
Image
Annotated CCD Image (cropped)
5 x 90s exposure (average combine), 3x3 binning, C Filter 
2011-03-19 01:27 hUT (#463088-92)
12" LX200R  (at f/9.7) + ST-10XME

Earlier Image of IC 2973 with SN 2011ao - 2011-03-07
 9 days after discovery.
Image
Annotated CCD Image (cropped)
3 x 90s exposure (average combine), 3x3 binning, C Filter 
2011-03-07 21:31 hUT (#461185-87)
12" LX200R  (at f/9.7) + ST-10XME

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NGC 2431 - Spiral Galaxy with Supernovae candidate

NGC 2431 with Supernovae candidate (Lynx)

PSN J07451362+5304107 (Type 1c) was discovered 2011/03/29.125 by Jack Newton and Tim Puckett
Magnitude at discovery ~ +17.4
(Rochester Supernova site | Discovery Image )

Image below (2011-04-03.92) was taken 5.8 days after PSN discovery.
Est Mag +15.9
SN candidate  is marked by white cross hair
Image
Annotated CCD Image (cropped)
4 x 120s exposure (average combine), 3x3 binning, C Filter 
2011-04-03 21:59 hUT (#465115-18)
12" LX200R  (at f/9.7) + ST-10XME

NGC 2431 - wider view
Image
CCD Image (50% size)
Image details as above

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Variable Stars

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This Web Page: CCD Images - Session 465  (2011-04-03)
Last Updated : 2015-05-16
Site Owner : David Richards
Home Page : David's Astronomy Web Site