Saturday, September 17, 2016

Californietto

There is plenty of interesting areas between Cassiopeia and Cepheus. Frame pictured below can be found next to famous Bubble nebula. This area contains mainly Sh2-157 hydrogen area that is excited to shine by WR157 Wolf-Rayet star (northern part of nebula) and blue supergiant of type O7 (southern part). This nebulosity is called Californietto Nebula in Interstellarum atlas, but is also known as Lobster's Claw Nebula or just The Claw Nebula.
It has been shot in my backyard using 130mm refractor and Atik383 camera. Total exposure was 300 minutes in H alpha, 150 minutes luminosity and 60 minutes each of RGB channel. Pretty tight frame, but rich :)
Sh2-157 region in Cassiopeia

The same, but hydrogen alpha only
Annotated frame

Clear skies!

Thursday, September 15, 2016

The Hole in the Cluster

There is some open star clusters in Cygnus.
Joke!
There is whole lot of open clusters in Cygnus! NGC6811 is one of them, pretty large, pretty old (1 billion years), pretty rich (about 1000 stars). And little bit empty inside, so its nickname is "Hole in the cluster".
Pictured from my backyard with Moon present. 3h total exposure with RGB filters and usual stuff - 130mm triplet and Atik 383 camera. 


NGC6811 open cluster in Cygnus


Clear skies!

Saturday, September 10, 2016

E.E. Barnard meets Beverly Lynds

Another piece of Milky Way stars and dusts. There are several non-stellar objects in the picture below. Main dark knight is Barnard 361 - large blob in the left part. Other objects are identified in the second annotated photo. Small bonus is planetary nebula Sh 1-89 - Moth Nebula. This is very star rich region in Cygnus constellation between Deneb and M39 open cluster. Also very rewarding in binocular observations.
In case you do not yet know - Beverly Lynds is an author of LDN and LBN catalogs. They was created much later than Barnard's ones, and also are more detailed.
Picture shot on August, 30 under my suburban sky with 130mm refractor and Atik383 monochromatic camera. Almost 6h total exposure time.
Barnard 361 dark blob and others


Clear skies!

Friday, September 9, 2016

LBN vs LDN

One letter makes difference :) LBN stands for Lynds' Catalogue of Bright Nebulae, and LDN is Lynds' Catalogue of Dark Nebulae. Both have been compiled in 1960s by Beverly Lynds. Many of its entries are cross referenced to other catalogs.
Now, the picture below contains several objects from both of these catalogs. It is a part of Milky Way in Cygnus constellation around LDN988 nebula. This immense molecular cloud is about 2000 light years away and is a place of active star formation processees. 

Pictured from my backyard, NELM 5.5, 130mm refractor, Atik383, LRGB channels 300 + 60 + 60 + 60 minutes. Shot over two nights 27-28.08.2016.
Milky Way in Cygnus around LDN988 nebula

Labeled picture
Magakian 843 nebula around V1331 Cygni star
Clear skies!

Wednesday, September 7, 2016

V1331 Cygni

Today some geek stuff. Some time ago I framed a sky fragment that contains several small bright and dark galactic fuzzies. Later I found out in the picture a small arc surrounding one of the stars. It turned out to be V1331 Cygni star. It is very young star that we observe at one of its poles, so we are able to see undisturbed view to this dynamic system. 
The arc nebula has been created few thousands years ago during FU Orionis outburst. Currently it is being carefully observed, as it is a place when formation of very low-mass objects may occur.

Pictured from my background, 5h total exposure with 130mm refractor and Atik383 camera.
Whole frame
Close up to LDN981 dark nebula with V1331
Enlarged view of V1331 and surrounding nebula
Clear skies!

Friday, September 2, 2016

Stars overflow

Palomar catalogue is a set of fifteen globular clusters discovered during POSS program. Few of them are pretty obscured with Milky Way dusts, and one of them is Palomar 10 cluster shown in the picture. Observant one can easily spot it in the upper left part of the frame. This one is placed in the Sagitta constellation and. There is also whole lot of Milky Way stars in the picture plus some uncatalogued dark nebulosity in the bottom part. Most of them are more or less red, because of interstellar selective extinction, but also due to the fact, that most of the Milky Way stars are cold and small ones.
Palomar 10 globular cluster (upper left) in Sagitta

In the upper right part there is pretty bright and red carbon star C* 2712 with color index 3.59 (!). And also there is another small and very red dot that is presented in enlarged crop below. It is variable star MN Sge, that is 100000 times brighter in infrared, than in visible part of the spectrum.
MN Sge variable star
Shot in my backyard with 130mm refractor and Atik383 camera. 300 minutes total LRGB exposure.

Monday, August 22, 2016

Boring elliptical

There is not much fun in seeing elliptical galaxies. Mostly they are symmetrical fuzzy blobs with no detail at all. Sometimes in the same field of view some spiral appears and it makes the frame more pleasant. 
But not this time. I made the picture below in May this year. It appeared so dull, that I refused to process it till recent. So here it is - a few elliptical galaxies nearby M60 and M59 in constellation of Virgo. Made with 130mm refractor and Atik383 camera, 4.5 hours of total exposure.
M60 and M59 in Virgo


Clear skies!