ASTRO: Nice mix of reflection and dark nebulae

This image was processed then lost and forgotten on the hard drive until
I accidentally ran across it a couple days ago. I'd never researched it
however. The field is located less than a degree north northeast of
Sh2-120 and Sh2-121 I posted a few days ago and was taken a couple weeks
before that field. Though the night was much better allowing me to pick
up the general H alpha glow of this part of Cygnus north of the North
American Nebula. The field is a nice mix of light and dark nebulae and
is an area of newly forming stars judging by all the Y*Os in the field
(Young Stellar Objects -- that is, stars still coming out of their dust
cocoons and moving onto the main sequence where they will spend most of
their lives as ordinary stars).

While I've identified some of the Y*Os in the image it is only a few of
them. Labels on top of labels would have been the result in some areas
had I tried to cover them all. I gave a taste of how many could crowd
in an area around LBN 408 near the top of the image.

There's an object down toward the bottom right of the image that makes a
sort of squashed ring. I was unable to identify it. A piece around a
red star was GN 21.00.7. A condensation to the west of this is MHO 958
an emission object. A very faint, difficult to see speck to the left of
GN 21.00.7 is HH 1051. There are a dozen more HH (Harbig Haro objects)
in the image, all such faint specks I didn't bother to point them out,
many more were below my exposure time to even detect. But what that
ring itself is I couldn't find out. Others have identified it as GN
21.00.7 but that just doesn't fit unless the GN designation is for the
"illuminating star" and it is a reflection nebula. That doesn't seem to
fit other GN objects however unless they are vdB objects which this is
not. I'm not well versed in identifying these objects so if someone has
the answer please let me know.

There's an interesting HH object just to the northeast of this field
that I took in November. This is a September image so it will be a
while before I get it processed. It was taken on an even better night
so goes a bit deeper. I considered mosaicing all three (including
Sh2-120-1) but the nights were so different as to transparency it would
be very difficult to get it to work so I gave up that idea. Turns out
there's a lot of interesting stuff for a high resolution system in this
part of the sky normally imaged with wide angle systems. Those wide
field images make a nice set of "survey plates" for me to find these
small objects.

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

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

Rick,

indeed a nice mix of red and blue.
The object to the lower right is most interesting. I have seen similar
objects near HH-objects (see
http://ccd-astronomy.de/temp5/6726-6...ursmallgut.jpg as an example), so
I would guess it somehow belongs to the HH
objects or their central star.

Stefan


"Rick Johnson" schrieb im Newsbeitrag
...

This image was processed then lost and forgotten on the hard drive until
I accidentally ran across it a couple days ago. I'd never researched it
however. The field is located less than a degree north northeast of
Sh2-120 and Sh2-121 I posted a few days ago and was taken a couple weeks
before that field. Though the night was much better allowing me to pick
up the general H alpha glow of this part of Cygnus north of the North
American Nebula. The field is a nice mix of light and dark nebulae and
is an area of newly forming stars judging by all the Y*Os in the field
(Young Stellar Objects -- that is, stars still coming out of their dust
cocoons and moving onto the main sequence where they will spend most of
their lives as ordinary stars).

While I've identified some of the Y*Os in the image it is only a few of
them. Labels on top of labels would have been the result in some areas
had I tried to cover them all. I gave a taste of how many could crowd
in an area around LBN 408 near the top of the image.

There's an object down toward the bottom right of the image that makes a
sort of squashed ring. I was unable to identify it. A piece around a
red star was GN 21.00.7. A condensation to the west of this is MHO 958
an emission object. A very faint, difficult to see speck to the left of
GN 21.00.7 is HH 1051. There are a dozen more HH (Harbig Haro objects)
in the image, all such faint specks I didn't bother to point them out,
many more were below my exposure time to even detect. But what that
ring itself is I couldn't find out. Others have identified it as GN
21.00.7 but that just doesn't fit unless the GN designation is for the
"illuminating star" and it is a reflection nebula. That doesn't seem to
fit other GN objects however unless they are vdB objects which this is
not. I'm not well versed in identifying these objects so if someone has
the answer please let me know.

There's an interesting HH object just to the northeast of this field
that I took in November. This is a September image so it will be a
while before I get it processed. It was taken on an even better night
so goes a bit deeper. I considered mosaicing all three (including
Sh2-120-1) but the nights were so different as to transparency it would
be very difficult to get it to work so I gave up that idea. Turns out
there's a lot of interesting stuff for a high resolution system in this
part of the sky normally imaged with wide angle systems. Those wide
field images make a nice set of "survey plates" for me to find these
small objects.

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

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

That was my suspicion as well but the coordinates pointed to the wrong
side of the star so I didn't mention it. Still it probably is related
at least.
Rick

On 4/8/2014 2:55 PM, Stefan Lilge wrote:
Rick,

indeed a nice mix of red and blue.
The object to the lower right is most interesting. I have seen similar
objects near HH-objects (see
http://ccd-astronomy.de/temp5/6726-6...ursmallgut.jpg as an
example), so I would guess it somehow belongs to the HH
objects or their central star.

Stefan


"Rick Johnson" schrieb im Newsbeitrag
...

This image was processed then lost and forgotten on the hard drive until
I accidentally ran across it a couple days ago. I'd never researched it
however. The field is located less than a degree north northeast of
Sh2-120 and Sh2-121 I posted a few days ago and was taken a couple weeks
before that field. Though the night was much better allowing me to pick
up the general H alpha glow of this part of Cygnus north of the North
American Nebula. The field is a nice mix of light and dark nebulae and
is an area of newly forming stars judging by all the Y*Os in the field
(Young Stellar Objects -- that is, stars still coming out of their dust
cocoons and moving onto the main sequence where they will spend most of
their lives as ordinary stars).

While I've identified some of the Y*Os in the image it is only a few of
them. Labels on top of labels would have been the result in some areas
had I tried to cover them all. I gave a taste of how many could crowd
in an area around LBN 408 near the top of the image.

There's an object down toward the bottom right of the image that makes a
sort of squashed ring. I was unable to identify it. A piece around a
red star was GN 21.00.7. A condensation to the west of this is MHO 958
an emission object. A very faint, difficult to see speck to the left of
GN 21.00.7 is HH 1051. There are a dozen more HH (Harbig Haro objects)
in the image, all such faint specks I didn't bother to point them out,
many more were below my exposure time to even detect. But what that
ring itself is I couldn't find out. Others have identified it as GN
21.00.7 but that just doesn't fit unless the GN designation is for the
"illuminating star" and it is a reflection nebula. That doesn't seem to
fit other GN objects however unless they are vdB objects which this is
not. I'm not well versed in identifying these objects so if someone has
the answer please let me know.

There's an interesting HH object just to the northeast of this field
that I took in November. This is a September image so it will be a
while before I get it processed. It was taken on an even better night
so goes a bit deeper. I considered mosaicing all three (including
Sh2-120-1) but the nights were so different as to transparency it would
be very difficult to get it to work so I gave up that idea. Turns out
there's a lot of interesting stuff for a high resolution system in this
part of the sky normally imaged with wide angle systems. Those wide
field images make a nice set of "survey plates" for me to find these
small objects.

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

Rick


--
Prefix is correct. Domain is arvig dot net