Celestial hemisphere:  Northern  ·  Constellation: Cassiopeia (Cas)  ·  Contains:  HD10223  ·  HD10260  ·  HD10362  ·  HD10485  ·  HD10494  ·  HD10842  ·  HD10892  ·  HD10972  ·  HD11004  ·  HD11162  ·  HD11374  ·  HD11471  ·  HD11605  ·  HD11622  ·  HD11669  ·  HD9972  ·  IC 166  ·  LDN 1332  ·  LDN 1334  ·  LDN 1337  ·  NGC 654  ·  NGC 663  ·  VdB6
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Queen Cassiopeia and her three clusters, 



    
        

            Thomas LELU
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Queen Cassiopeia and her three clusters

Getting plate-solving status, please wait...
Queen Cassiopeia and her three clusters, 



    
        

            Thomas LELU
Powered byPixInsight

Queen Cassiopeia and her three clusters

Acquisition details

Dates:
Aug. 1, 2022 ·  Aug. 3, 2022 ·  Aug. 20, 2022 ·  Aug. 24, 2022 ·  Aug. 25, 2022
Frames:
IDAS LPS-P3 2": 140×600(23h 20′) (gain: 145.00) -10°C bin 1×1
Integration:
23h 20′
Darks:
20
Flats:
50
Bias:
100
Avg. Moon age:
17.39 days
Avg. Moon phase:
18.20%
Bortle Dark-Sky Scale:
4.00

RA center: 01h47m51s.18

DEC center: +61°3916.1

Pixel scale: 2.032 arcsec/pixel

Orientation: 176.950 degrees

Field radius: 1.293 degrees

WCS transformation: thin plate spline

More info:Open 

Resolution: 3800x2557

File size: 19.3 MB

Locations: Jardin, TOUL, Lorraine, France

Data source: Backyard

Description

It is rare to be able to photograph several objects on the same image.
Thanks to my telescope with a focal length of 940mm, I was able to photograph these three open clusters of stars with a dark nebula. Located in the constellation of Cassiopeia, we therefore find:

- NGC663 the star cluster located at the top of the image: discovered by the German astronomer Caroline Herschel in 1783 (William Herschel's sister). NGC 663 contains between fifty and a hundred stars. The age of this cluster is between 20 and 25 million years.

- NGC654 the cluster, located at the bottom left, also discovered by the Herschel family. Just above to the left of the cluster is a blue supergiant star of magnitude 9.6 (HIP 8074) surrounded by a reflection nebula vdB 6.

- IC166, located at the bottom right, is about 1 billion years old. Few clusters reach the age of a billion years because of the disturbance generated by the rotation in our galaxy. However, IC 166 is beyond the arm of Perseus and therefore far from the galactic center. It is assumed that the disturbing effects are weaker and therefore the chances of survival of these clusters are higher.

Comments

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  • Queen Cassiopeia and her three clusters, 



    
        

            Thomas LELU
    Original
  • Queen Cassiopeia and her three clusters, 



    
        

            Thomas LELU
    F

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Description: Image resulting from stacking

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Queen Cassiopeia and her three clusters, 



    
        

            Thomas LELU

In these collections

Nebulae
Star clusters