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NGC 4485 + NGC 4490 (Galaxy)
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Also known as: Arp 269, Cocoon Galaxy
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Right ascension: 12h 31m
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Declination: 41° 37'
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Constellation: Canes Venatici
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Date/time: 2014.05.23 21:40 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: 7/10
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Transparency: 3/5
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SQM: 21.18 m/as2
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Temperature: 15°C
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Humidity: low
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Wind: none
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Sight: 4 - lots of details, very interesting, unique look
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Difficulty: 3 - moderately visible, dark adaptation needed, averted vision might add to details
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Position: 2 - easy, bright star nearby
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Location: Nádasdladány, Hungary
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Observer: Ferenc Lovró
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Description:
A very spectacular pair of galaxies, also listed in Halton Arp's Atlas of Peculiar Galaxies with number 269. NGC 4490 (the larger galaxy) displays details instantly, and by increasing the power two spiral arms become apparent, departing the round central area to the East and West. The Southern side of the galaxy looks more round while the Northern looks more flat. It's minor companion, the NGC 4485 is round, however it shows a slightly brighter Northern side.
Like always, I did not study this object before my observation, so I was very happy to see how much resemblance my sketch has with the astrophotos I've seen later.
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Hi-resolution image: [ reversed sketch | original sketch ]
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gmail*com.
ikonra kattintva magyarul is olvashatod az észlelést.
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