7331 Group of Galaxies and Stephan's Quintet in Pegasus
Takahashi FSQ-106N on EM-200; SBIG STL-11000M, Astrodon
filters; Vixen 70X600 guidescope
RGB - 5 x 300s; 3 x 300s luminance; Images acquistion/processing in
MaximDL ad Photoshop.
Location/Date: 08 October
2010; Chiefland Astronomy Village
NGC 7331 and galaxies in the Deer Lick Group of Galaxies in the
right side of the field and Stephan's quintet is in the left side of
the field. The spiral galaxy NGC 7331 is about 50 million
light-years distant in the northern constellation Pegasus. The
background galaxies are about one tenth the apparent size of NGC
7331 and so lie roughly ten times farther away. Their strikingly
close alignment on the sky with NGC 7331 occurs just by chance. The
visual grouping of galaxies is also known as the Deer Lick Group.
Stephan's Quintet, as its name implies, is a group of five
galaxies (NGC7317, 7318A, 7318B, 7319 and 7320) in the constellation
Pegasus. Four of the galaxies are 290 million light years distant;
one is 40 million light years away (entry collated from NASA APOD
and Wikipedia websites).