David's Astronomy Pages Images - Session 474 (2011-05-01)

Images (S473)

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Images (S475)

Objects	Session Notes
Hickson 51 - Galaxy Group (NGC 3651 et al) Hickson 53 - Galaxy Group (NGC 3697)     NGC 3972 - Spiral Galaxy with Supernova 2011by NGC 3977 - Spiral Galaxy NGC 4495 - Spiral Galaxy with Supernova 2011ca     Photometric Monitoring - Variables - KR Aur, SY Cnc, U Gem, RZ LMi, GK Per, ER UMa, SU UMa     Astrometric Monitoring - Nearby Stars - Gliese 412, Groombridge 1830, Lalande 21185	- Evening  session (1.7 hrs) - Session operated under semi-automated control, with remote monitoring from indoors computer.  - Ambient Temperature: 1.5°C (minimum)  - CCD operation -25°C (at 66% average cooling).   - main objectives of the session was to acquire images of selected project stars for ongoing photometric analysis.

Hickson 51 - Galaxy Group (NGC 3651  et al)

NGC 3651 (Leo)

Annotated CCD Image (cropped) 120 sec exposure (single frame), 3x3 binning, C Filter  2011-05-01 23:23 h UT  (#474094) 12" LX200R  (at f/9.7) + ST-10XME

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Hickson 53 - Galaxy Group (NGC 3697)

NGC 3697 (Leo)

CCD Image (50% size) 2 x 120 sec exposure (average combine), 3x3 binning, C Filter  2011-05-01 23:16 h UT  (#474089-90) 12" LX200R  (at f/9.7) + ST-10XME [ larger image ]

NGC 3697 - detail

Annotated CCD Image (75% size, cropped) Image details as above [ larger image ]

NGC 3972 - Spiral Galaxy with Supernova 2011by

NGC 3972 with SN 2011by  (Leo) SN 2011by (Type Ia) was discovered 2011/04/26.823 by Zhangwei Jin and Xing Gao Discovery Magnitude 14.2 ( Rochester Supernova site | Discovery Image | TNS 2011by )

NGC 3972 - Spiral Galaxy with SN 2011by  (T+5.1d)

Annotated CCD Image (50% size) 5 x 90 sec exposure (average combine), 3x3 binning, C Filter  2011-05-01 22:38 h UT (#474041-45) 12" LX200R  (at f/9.7) + ST-10XME

NGC 3972 with SN 2011by - 2011-05-01 (T+5.1d)  Image below (2011-05-01.94) was taken 5.1 days after SN discovery. SN 2011by is marked by white cross hair Estimated Magnitude +13.0 (Clear Filter)

Annotated CCD Image (100% size, cropped) 5 x 90 sec exposure (average combine), 3x3 binning, C Filter  2011-05-01 22:38 h UT (#474041-45) 12" LX200R  (at f/9.7) + ST-10XME

Images of SN 2011by (in NGC 3972) on Supernova 2011 Page >>

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NGC 3977 - Spiral Galaxy  

NGC 3972 & NGC 3977  (Leo)  NGC 3977 is galaxy in upper left  of image NGC 3972 is at center of image

CCD Image (50% size) 5 x 90 sec exposure (average combine), 3x3 binning, C Filter  2011-05-01 22:38 h UT  (#474041-45) 12" LX200R  (at f/9.7) + ST-10XME

NGC 3977 - detail (NGC 3977 top centre,  NGC 3972 bottom right)

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

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NGC 4495 - Spiral Galaxy with Supernova 2011ca

NGC 4495 with SN 2011ca  (Coma Berenices) SN 2011ca (Type Ic) was discovered 2011/04/26.940 by Fabrizio Ciabattari and E. Mazzoni Magnitude at discovery +17.2 (Rochester Supernova site | Discovery Image | TNS 2011ca )

NGC 4495 with SN 2011ca -  2011-05-01 (T+5.0d) Image below (2011-05-01.94) was taken 5.0 days after SN discovery. Position of SN (faint but distinct) is indicated by white cross hair Estimated Magnitude +16.4 (Clear Fiter)

Annotated CCD Image (cropped) 5 x 90 sec exposure (average combine), 3x3 binning, C Filter  2011-05-01 22:28 h UT  (#474034-38) 12" LX200R  (at f/9.7) + ST-10XME

Images of SN 2011ca (in NGC 4495) on Supernova 2011 Page >>

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