Celestial hemisphere:  Northern  ·  Constellation: Cassiopeia (Cas)  ·  Contains:  Bubble Nebula  ·  M 52  ·  NGC 7510  ·  NGC 7538  ·  NGC 7635  ·  NGC 7654  ·  The star 2Cas  ·  The star 4Cas
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Lobster Claw Nebula, Bubble Nebula and their neighbors, 



    
        

            Ivan Raichev
Lobster Claw Nebula, Bubble Nebula and their neighbors
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Lobster Claw Nebula, Bubble Nebula and their neighbors

Revision title: Final Version

Getting plate-solving status, please wait...
Lobster Claw Nebula, Bubble Nebula and their neighbors, 



    
        

            Ivan Raichev
Lobster Claw Nebula, Bubble Nebula and their neighbors
Powered byPixInsight

Lobster Claw Nebula, Bubble Nebula and their neighbors

Revision title: Final Version

Acquisition details

Dates:
July 29, 2021 ·  July 30, 2021
Frames:
IDAS NBZ 2" Dual Band Nebula Boost Filter: 120×120(4h) (gain: 100.00) -10°C bin 1×1
IDAS NBZ 2" Dual Band Nebula Boost Filter: 100×300(8h 20′) (gain: 100.00) -10°C bin 1×1
Integration:
12h 20′
Darks:
20
Flats:
30
Bias:
30
Avg. Moon age:
20.72 days
Avg. Moon phase:
64.84%
Bortle Dark-Sky Scale:
6.00

Basic astrometry details

Astrometry.net job: 5362461

RA center: 23h17m25s.4

DEC center: +60°4958

Pixel scale: 1.937 arcsec/pixel

Orientation: 88.515 degrees

Field radius: 1.951 degrees

Resolution: 6048x4006

File size: 25.2 MB

Locations: Sofia - Capital of Bulgaria, Sofia, Bulgaria; The Unreal Observatory, Sofia, Bulgaria

Data source: Backyard

Description

I managed to process my data from 29 and 30th of July 2021. For those nights I chose a part of the sky in the Cepheus/Cassiopeia constellations which included several objects which could be fit in the FOV of my system. As always I imaged from the city right under the city lights. Here is what I got:

- NGC 7510 - a 7th magnitude Open Cluster with a physical diameter of 20 light years and distance from our solar system of 11 000 light years. Apparent size - 6 archmin.
- M52 - a 7.3 magnitude Open Cluster with a physical diameter of 15 light years and distance from our solar system of 5 000 light years. Apparent size - 15 archmin.
- Sh2-157 - Lobster Claw Nebula - an emission Nebula with a physical diameter of 759 light years and distance from our solar system of 43 000. Apparent size - 60x50 archmin. It turns out as per some sources in the net that the brighter small spot inside the Lobster Claw Nebula is SH2-157a or Lyn's Bright Nebula 537.
- Sh2-158/NGC 7538 - The Northern Lagoon Nebula - An emission Nebula with apparent size - 10x5 archmin.
- Sh2-159 - an emission Nebula. Apart from that, there is no more specific data for this object.
- Sh2-161 - an emission Nebula with apparent size - 90x50 archmin. Data for this object is scarce as well despite its obvious location - next to the Bubble Nebula...
- SH2-162/NGC 7635 - The famous Bubble Nebula - 12 magnitude planetary nebula. Situated 11 000 light years from us, it is 10 light years across. It is stated that it was created by a fierce stellar wind from the hot young massive central star which has blasted out the structure of glowing gas against denser material in a surrounding molecular cloud. The central star - SAO 20575 is thought to have a mass of 10-20 solar masses.
- several planetary nebulas which I guess are quite small because I do not see them.

This image contains quite a catch. I am happy that I am able to see this part of the sky in such detail and from the roof of my home.

Clear Skies!
Ivan

Comments

Revisions

  • Lobster Claw Nebula, Bubble Nebula and their neighbors, 



    
        

            Ivan Raichev
    Original
  • Lobster Claw Nebula, Bubble Nebula and their neighbors, 



    
        

            Ivan Raichev
    C
  • Lobster Claw Nebula, Bubble Nebula and their neighbors, 



    
        

            Ivan Raichev
    E
  • Final
    Lobster Claw Nebula, Bubble Nebula and their neighbors, 



    
        

            Ivan Raichev
    G

C

Description: Version with reduced stars.

Uploaded: ...

E

Description: Annotated Image

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G

Title: Final Version

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Sky plot

Sky plot

Histogram

Lobster Claw Nebula, Bubble Nebula and their neighbors, 



    
        

            Ivan Raichev