ASTRO: Barnard 352

Barnard 352 is an interesting dark nebula that makes for a poor Hudson's
Bay in the North American Nebula near Deneb in Cygnus. Actually it lies
north of the main H alpha portion of the North American Nebula in a
region that has both some H alpha and some reflection nebula components.
Taken through rather nasty clouds my color data is rather suspect,
especially the blue which may be too weak giving more red to the image
than it should. Being about 20 minutes across its long diameter it is a
good visual target. It shows surprisingly well in my 10" f/5 at 50
power even without any type of nebula filter though the OIII does help
it some. I've been unable to find a distance for it. It is likely
closer than the North American Nebula complex that it partly obscures.
That however has so many different distance estimates it made my head
spin. Most fell between 1500 and 2200 light-years. So the dark nebula
must be closer than whatever distance you pick for NGC 7000/North
American Nebula. That nebula is far too large for my system so I
settled for a poor excuse for Hudson's Bay instead as it did fit my field.

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

I've included a version at 1" per pixel for those who print these out
and one at 1.5" per pixel better for monitor viewing.

Rick
--
Prefix is correct. Domain is arvig dot net

Rick,

amazing how a longer focal length can transform an object that probably has
been imaged a million times into something completely new.
Actually I even like the colour :-)

Stefan

"Rick Johnson" schrieb im Newsbeitrag
...

Barnard 352 is an interesting dark nebula that makes for a poor Hudson's
Bay in the North American Nebula near Deneb in Cygnus. Actually it lies
north of the main H alpha portion of the North American Nebula in a
region that has both some H alpha and some reflection nebula components.
Taken through rather nasty clouds my color data is rather suspect,
especially the blue which may be too weak giving more red to the image
than it should. Being about 20 minutes across its long diameter it is a
good visual target. It shows surprisingly well in my 10" f/5 at 50
power even without any type of nebula filter though the OIII does help
it some. I've been unable to find a distance for it. It is likely
closer than the North American Nebula complex that it partly obscures.
That however has so many different distance estimates it made my head
spin. Most fell between 1500 and 2200 light-years. So the dark nebula
must be closer than whatever distance you pick for NGC 7000/North
American Nebula. That nebula is far too large for my system so I
settled for a poor excuse for Hudson's Bay instead as it did fit my field.

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

I've included a version at 1" per pixel for those who print these out
and one at 1.5" per pixel better for monitor viewing.

Rick
--
Prefix is correct. Domain is arvig dot net