NGC 6572 (Planetary nebula)
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Also known as: Blue Racquetball
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Right ascension: 18h 13m
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Declination: 6° 51'
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Constellation: Ophiuchus
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Date/time: 2010.06.05 23:30 UT
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Equipment: 12" f/5 Newtonian
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FoV: 11'
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Magnification and filter(s): 300x
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Seeing: 7/10
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Transparency: 2/5
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Location: Nádasdladány, Hungary
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Observer: Ferenc Lovró
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Description:
At 71x all I can notice is that a star appears in a magical deep blue colour. I had to increase magnification all the way up to 300x to be perfectly sure, that this star in fact has some extent. Due to the tiny size, the UHC filter does not help me to enhance the view at all. At 300x some tentacles appear but the whole sight is very uncertain. The object is very bright but I don't think it's any larger than 3", maybe even smaller than that. Later on I've checked some photos and I was very happy to see that those tentacles are really there, but they are visible only on the best photographs. SQM reading: 20.85 m/arcsec2, 11°C.
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Hi-resolution image: [ reversed sketch | original sketch ]
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