M48 (Open cluster)
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Also known as: NGC 2548
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Right ascension: 8h 14m
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Declination: -5° 47'
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Constellation: Hydra
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Date/time: 2010.02.21 20:30 UT
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Equipment: 12" f/5 Newtonian
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FoV: 47'
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Magnification and filter(s): 45x
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Seeing: 7/10
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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:
This large, moderately bright open cluster can be detected easily in a 50mm finderscope or binocular. When looking through the telescope I see countless number of stars that are very similar both in colour and luminosity. I can also detect some foggy background which may be miriads of unresolved stars. The conditions were not perfect to sketch this cluster because the 50% Moon caused a low NELM (SQM reading was 17.33 towards the Moon and 19.46 opposite the Moon, -3°C, low humidity).
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Hi-resolution image: [ reversed sketch | original sketch ]
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