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Novae 2008

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This page documents observations and images of novae with discovery dates in 2008

Novae Name, discovery date, alias

Nova Cyg 2008 No. 2 - Nova (2008-04-10), V2491 Cyg

Nova Cyg 2008 No. 2 - Nova (discovered 2008-04-10), V2491 Cyg

Nova Cyg 2008 No. 2 / V2491 Cyg (Cygnus) Nova 'V2491 Cyg' was discovered in Cygnus by Koichi Nishiyama, Kurume, Fukuoka-ken, Japan, and Fujio Kabashima, Miyaki-cho, Saga-ken, Japan, on unfiltered CCD images taken 2008-04-10.728 UT at magnitude 7.7 (IAU Circular No. 8934) (AAVSO Special Notice #103) Image below (2008-04-14.98 UT) was taken 4.25 days above discovery. Estimated magnitude +8.5 (C)

Annotated CCD Image 20s exposure, 2x2 binning, C Filter 2008-04-14 23:30hUT (#281142)

Sequence of CCD images of V2491 Cyg taken at varying dates after discovery
4.25 days (mag +8.5)		Pre-Nova (DSS image)

3x20s exposure (average combine), 2x2 binning, C Filter 2008-04-14 23:48hUT (#281164-66)		DSS image Same field of view as image to left [ image from http://archive.stsci.edu/cgi-bin/dss_form ]

22.3 days (mag +10.8)		59.3 days (mag +14.0)

3 x 120s exposure (average combine), 2x2 binning, C Filter 2008-05-03 00:56hUT (#285129-31)		3 x 120s exposure (average combine), 2x2 binning, C Filter 2008-06-08 23:56hUT (#290054-56)

71.3 days (mag +14.4)		83.3 days (mag +14.8)

3 x 120s exposure (average combine), 2x2 binning, C Filter 2008-06-20 23:47hUT (#291042-44)		3 x 120s exposure (average combine), 2x2 binning, C Filter 2008-07-02 23:54hUT (#293040-42)

415 days (mag < +16 )		Pre-Nova (DSS image)

3 x 45s exposure (average combine), 3x23 binning, C Filter 2009-05-31 01:02hUT (#371200-02) 12" LX200 R + ST-10XME		DSS image Same field of view as image to left [ image from http://archive.stsci.edu/cgi-bin/dss_form ]

V2491 Cyg - Light Curves showing decline from discovery (+7.7) down to final measurement (+14.8)




V2491 Cyg - Reference Stars

Annotated CCD Image 15s exposure, 2x2 binning, V Filter 2008-04-14 23:51hUT (#281171)

Identification of precursor star to V2491 Cyg Nova
V2491 Cyg 59.3 days after discovery		Pre-Nova (DSS image)

3 x 120s exposure (average combine), 2x2 binning, C Filter 2008-06-08 23:56hUT (#290054-56)		DSS image Same field of view as image to left [ image from http://archive.stsci.edu/cgi-bin/dss_form ]

This Web Page:	Novae 2008
Last Updated :	2024-09-11
Site Owner :	David Richards
Home Page :	David's Astronomy Web Site

David's Astronomy Pages (Deep Sky) Novae 2008

Nova Cyg 2008 No. 2 - Nova (discovered 2008-04-10), V2491 Cyg

David's Astronomy Pages (Deep Sky)
Novae 2008