ASTRO: Pegasus Dwarf Galaxy

The Pegasus Dwarf is a nearby galaxy also known as UGC 12613 and Pegasus
DIG (Dwarf Irregular Galaxy). You'd think that being a very nearby
galaxy we'd know its distance very accurately. NOT! There is much
disagreement here. Some say it is a distant satellite of M31, others
say it is a member of the M31 group. These would put its distance at
about 3 million light years. Others say it is a neighbor of IC 1613
which would put it some 5.5 million light years away.

You can read more about the distance problem at:
http://seds.org/~spider/Spider/LG/peg_dw.html

The obvious near edge on spiral is UGC 12613 at 900 MLY. Off the
southeast (lower left) end Pegasus DIG is the spherical, near star-like
galaxy, IV Zw 152 at 910 MLY. Off the opposite end is a much smaller
star-like galaxy surrounded by a fairly large fuzzy halo. This is SDSS
J232817.48+144509.2 at 1.8 billion light years. The field is full of
galaxies, most of which are fainter than my limiting magnitude due to
the snow greatly increasing my sky's brightness. NED lists well over
500 within 5 minutes of arc of this galaxy. That's about its length in
my shot. So nearly every star like object you see that isn't perfectly
round, and some that are, are really distant galaxies. Maybe next time
I can image it without snow on the ground.

14" LX200R @ f/10, L=4x10', RGB=2x10', STL-11000XM, Paramount ME

Rick
--
Correct domain name is arvig and it is net not com. Prefix is correct.
Third character is a zero rather than a capital "Oh".

Great picture Rick. I have never imaged that one, not sure if I have seen
pictures of it before. The other "big" galaxy is quite large for being 900
million lightyears away.

Stefan

"Rick Johnson" schrieb im Newsbeitrag
er.com...
The Pegasus Dwarf is a nearby galaxy also known as UGC 12613 and Pegasus
DIG (Dwarf Irregular Galaxy). You'd think that being a very nearby
galaxy we'd know its distance very accurately. NOT! There is much
disagreement here. Some say it is a distant satellite of M31, others
say it is a member of the M31 group. These would put its distance at
about 3 million light years. Others say it is a neighbor of IC 1613
which would put it some 5.5 million light years away.

You can read more about the distance problem at:
http://seds.org/~spider/Spider/LG/peg_dw.html

The obvious near edge on spiral is UGC 12613 at 900 MLY. Off the
southeast (lower left) end Pegasus DIG is the spherical, near star-like
galaxy, IV Zw 152 at 910 MLY. Off the opposite end is a much smaller
star-like galaxy surrounded by a fairly large fuzzy halo. This is SDSS
J232817.48+144509.2 at 1.8 billion light years. The field is full of
galaxies, most of which are fainter than my limiting magnitude due to
the snow greatly increasing my sky's brightness. NED lists well over
500 within 5 minutes of arc of this galaxy. That's about its length in
my shot. So nearly every star like object you see that isn't perfectly
round, and some that are, are really distant galaxies. Maybe next time
I can image it without snow on the ground.

14" LX200R @ f/10, L=4x10', RGB=2x10', STL-11000XM, Paramount ME

Rick
--
Correct domain name is arvig and it is net not com. Prefix is correct.
Third character is a zero rather than a capital "Oh".