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NGC 3972 + NGC 3982 + NGC 3990 + NGC 3998 + SN 2011by (Galaxy)
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Right ascension: 11h 58m
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Declination: 55° 16'
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Constellation: Ursa Major
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Date/time: 2011.05.06 20:30 UT
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Equipment: 12" f/5 Newtonian
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FoV: 32'
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Magnification and filter(s): 100x
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Seeing: 4/10
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Transparency: 3/5
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Location: Nádasdladány, Hungary
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Observer: Ferenc Lovró
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Description:
My original plan was to observe the supernova SN 2011by, the newest celebrity in the stellar world. However, as it is located in an area full of spectacular galaxies, I decided to sketch the galactic neighborhood too. The supernova itself is very bright, even brighter than what I expected, and compared to the nearby stars, I estimate a brightness of abour 13.2m! It is by far brighter than the surface of the parent galaxy, NGC 3972. The two large face-on galaxies (3998 and 3982) are the brightest in the FoV, the tiny 3990 is only slightly fainter than these, The 3972 is however very faint, and I cannot detect the nearby 3977 at all. Perhaps I should try again on a night with better seeing. SQM: 21.12m/arcsec2, 2°C.
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Hi-resolution image: [ reversed sketch | original sketch ]
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ikonra kattintva magyarul is olvashatod az észlelést.
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