David's Astronomy Pages Images - Session 471 (2011-04-28)

Images (S470)

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Images (S472)

Objects	Session Notes
NGC 3898 - Spiral Galaxy (Herschel I-228) NGC 3913 - Spiral Galaxy NGC 3972 - Spiral Galaxy with Supernova 2011by NGC 3982 - Spiral Galaxy     Photometric Monitoring - Variables - FS Aur, KR Aur, U Gem, CZ Ori, DY Per, GK Per     Astrometric Monitoring - Nearby Stars - None	- Evening  session (2.2 hrs), cut short when wind began to strengthen. - Session operated under semi-automated control, with remote monitoring from indoors computer.  - Ambient Temperature: 1.5°C (minimum)  - CCD operation -25°C (at 72% average cooling).   - main objectives of the session was to acquire images of selected project stars for ongoing photometric analysis.

NGC 3898 - Spiral Galaxy (Herschel I-228)

NGC 3898/ Herschel I-228 (Ursa Major)  [ Herschel 400 Objects ]

CCD Image (cropped) 3 x 120s exposure (average combine), 3x3 binning, C Filter  2011-04-28 22:56 hUT (#471081-83) 12" LX200R  (at f/9.7) + ST-10XME

NGC 3898 - Wider View

CCD Image (50% size) Image details as above

NGC 3898 - Earlier Image (2006-12-20)

CCD Image 5 x 180s exposure (average combine), 2x2 binning, C Filter 2006-12-20 03:25h UT (#167430-34) 8" LX200 + ST-7E

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NGC 3913 - Spiral Galaxy

NGC 3913 (Ursa Major)

CCD Image (cropped) 3 x 120s exposure (av erage combine), 3x3 binning, C Filter  2011-04-28 22:43 hUT (#471074-76) 12" LX200R  (at f/9.7) + ST-10XME

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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 Magnitude at discovery +14.2 ( Rochester Supernova site | Discovery Image | TNS 2011by )

NGC 3972 with SN 2011by - 2011-04-28 (T+2.1d) Image below (2011-04-28.91) was taken 2.1 days after SN discovery. Position of SN 2011 (distinct) is marked by white cross hair Estimated Mag +13.8 (Clear Filter)

CCD Image (cropped) 5 x 90 sec exposure (average combine), 3x3 binning, C Filter  2011-04-28 21:56 h UT  (#471048-52) 12" LX200R  (at f/9.7) + ST-10XME

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

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NGC 3982 - Spiral Galaxy

NGC 3982 (Ursa Major)

CCD Image (Linear Scaling, cropped) 5 x 120s exposure (av erage combine), 3x3 binning, C Filter  2011-04-28 22:14 hUT (#471058-62) 12" LX200R  (at f/9.7) + ST-10XME

NGC 3982 - detail

CCD Image (Square Root Scaling, cropped) Image details as above

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NGC 3998 - Spiral Galaxy (Herschel I-229)

NGC 3998 / Herschel I-229 (Ursa Major) NGC 3998 - Spiral Galaxy NGC 3990 - Elliptical Galaxy (adjacent)

CCD Image (cropped) 4 x 120s exposure (av erage combine), 3x3 binning, C Filter  2011-04-28 22:32 hUT (#471067-71) 12" LX200R  (at f/9.7) + ST-10XME

NGC 3998 & NGC 3990 - Wider View

CCD Image (50% size) Image details as above

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