NGC 7332 + NGC 7339 (Galaxy)
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Right ascension: 22h 37m
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Declination: 23° 48'
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Constellation: Pegasus
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Date/time: 2008.10.01 23:45 UT
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Equipment: 12" f/5 Newtonian
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FoV: 18'
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Magnification and filter(s): 250x
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Seeing: 6/10
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Transparency: 4/5
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Location: Nádasdladány, Hungary
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Observer: Ferenc Lovró
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Description:
Two spectacular galaxies of similar size but different look, in a nice pattern, about perpendicular to eachother. NGC 7332 is a bit larger and much brighter, however visually I've seen it slightly smaller than its fainter companion. A reason for this might be its starlike, bright core, that is washing away the dimmer areas, and to which I estimate a brightness of about 12.7m. The galaxy is losing brightness smoothly toward its outer boundaries. NGC 7339 however does not have a starlike core, its surface looks perfectly homogeneous, it's has a shape of a cigar: faint and highly elongated. It has sharp edges. I estimate a surface brightness of 13.2m. Their sizes are: 0.5' x 1.5' for NGC 7332, which is much smaller than what is stated in the catalogue (1.1' x 4.1'!), and 0.5' x 2.3' for NGC 7339. The photos I've seen make me certain that I'm right by the size estimation, because on these the galaxy pair looks quite the same by size.
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Hi-resolution image: [ reversed sketch | original sketch ]
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This sketch was featured on Astronomy Sketch of the Day on Dec 26, 2008.
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