This sight... is by far the noblest astronomy affords.
/ Edmond Halley /



In memoriam Halton C. Arp (1927-2013).


My astronomy sketches. Hover mouse over image for the inverted look. For fainter objects, take a look at the black-on-white original, sometimes it reveals more details.


Need advice? Want to discuss an observation? Feel free to contact me at flovro gmail*com.

ÚJ! Amennyiben elérhető, a ikonra kattintva magyarul is olvashatod az észlelést.


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NGC 7217 (Galaxy)
Right ascension: 22h 7m Declination: 31° 21'
Constellation: Pegasus
Date/time: 2008.10.01 23:00 UT
Equipment: 12" f/5 Newtonian
FoV: 23' Magnification and filter(s): 167x
Seeing: 6/10 Transparency: 4/5
Location: Nádasdladány, Hungary
Observer: Ferenc Lovró
Description:

Faint galaxy that looks pretty small, it only gets brighter near its tiny core, but that core is very bright compared to the rest of the body of the galaxy. The 11.1m luminosity that is stated in catalogues I find exaggerated. Its core resembles a blurred star, and according to my estimation, has a brightness of about 13.6m, while the average surface brightness of the galaxy I estimate at 14.1 magnitudes. Its shape is slightly elongated ellipse in the SW-NE directions, with a visible size of 2' x 2'10".


Hi-resolution image: [ reversed sketch | original sketch ]
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All text and images are ©opyright of Ferenc Lovró. All rights reserved worldwide.

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