David's Astronomy Pages Images - Session 473 (2011-04-30)

Images (S472)

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Images (S474)

Objects	Session Notes
NGC 3972 - Spiral Galaxy with Supernova 2011by UGC 4985 - Spiral Galaxy     Photometric Monitoring - Variables - FS Aur, KR Aur, SY Cnc, R CrB, AM CVn, RS CVn, CI Cyg, S Cyg, SS Cyg, U Gem, AM Her, SS Her, U Her, BL Lac, RZ LMi, CY Lyr, GK Per, ER UMa, SU UMa     Astrometric Monitoring - Nearby Stars - CN Leo	- Evening  session (3.0 hrs) - Session operated under semi-automated control, with remote monitoring from indoors computer.  - Ambient Temperature: 0.5°C (minimum)  - CCD operation -25°C (at 68% average cooling).   - main objectives of the session was to acquire images of selected project stars for ongoing photometric analysis.

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 with SN 2011by - 2011-04-30 (T+4.0d) Image below (2011-04-30.93) was taken 4.0 days after SN discovery. Position of SN 2011(distinct) is shown by white cross hair Estimated Mag +13.3 (Clear Filter)

Annotated CCD Image (100% size, cropped) 5 x 90 sec exposure (average combine), 3x3 binning, C Filter  2011-04-30 22:14 h UT  (#473037-41) 12" LX200R  (at f/9.7) + ST-10XME

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

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UGC 4985 - Spiral Galaxy

UGC 4985  (Leo)

CCD Image (cropped, 100% size) 4 x 120s exposure (average combine), 3x3 binning, C Filter  2011-04-06 00:08 hUT (#473165-68) 12" LX200R  (at f/9.7) + ST-10XME

UGC 4985 - Earlier Image (2011-04-06) UGC 4985 with PSN J09225262+2159157 (=SN 2011be,  = SNHunt46)   (Leo)

Annotated CCD Image (cropped, 100% size) 120s exposure (single frame), 3x3 binning, C Filter  2011-04-06 00:08 hUT (#466098) 12" LX200R  (at f/9.7) + ST-10XME

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