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Ras Algethi (TVICS)
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Also known as: Rasalgethi, Alpha Herculis
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Right ascension: 17h 15m
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Declination: 14° 23'
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Constellation: Hercules
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Date/time: 2013.07.01 22:10 UT
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Equipment: 12" f/5 Newtonian
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FoV: '
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Magnification and filter(s): 250x
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Seeing: 3/10
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Transparency: 4/5
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SQM: 21.34 m/as2
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Temperature: 12°C
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Humidity: moderate
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Wind: none
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Sight: 3 - definite details, interesting look
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Difficulty: 3 - moderately visible, dark adaptation needed, averted vision might add to details
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Position: 1 - very easy, many bright stars nearby
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Location: Nádasdladány, Hungary
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Observer: Ferenc Lovró
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Description:
A close colour contrasting binary. The B component wasn't easy to see as the bad seeing made the bright A component dancing in the FoV, hiding the close companion star. The main component is bright golden coloured, while its companion is much fainter white with bluish hue. Nice but difficult binary.
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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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