Hemisphere:  Northern  ·  Constellation: Cassiopeia (Cas)  ·  Contains:  12 Cas  ·  NGC 103  ·  NGC103  ·  Sh2-172  ·  Sh2-173  ·  The star 12Cas
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SH2-173 - Phantom of the Opera HaLRGB, 



    
        

            Sergiy_Vakulenko
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SH2-173 - Phantom of the Opera HaLRGB

Imaging telescopes or lenses: Skywatcher ED80

Imaging cameras: ATIK 383L+

Mounts: AZ-EQ6

Guiding telescopes or lenses: Orion thin OAG

Guiding cameras: QHYCCD QHY5

Focal reducers: Skywatcher .85x Focal Reducer & Corrector

Software: PS  ·  Fitstacker 12  ·  Main Sequence Software SGPro  ·  Pixinsight

Filters: Baader Ha 7nm 36mm  ·  Baader Blue 36 mm  ·  Baader Red 36 mm  ·  Baader Green 36 mm  ·  Baader Luminance 36 mm


Dates:Oct. 30, 2017

Frames:
Baader Blue 36 mm: 26x600" bin 1x1
Baader Green 36 mm: 24x600" bin 1x1
Baader Luminance 36 mm: 42x600" bin 1x1
Baader Red 36 mm: 24x600" bin 1x1
Baader Ha 7nm 36mm: 40x1800" bin 1x1

Integration: 39.3 hours

Avg. Moon age: 9.79 days

Avg. Moon phase: 74.49%


Astrometry.net job: 2870356

RA center: 0h 21' 51"

DEC center: +61° 45' 41"

Pixel scale: 2.139 arcsec/pixel

Orientation: 4.543 degrees

Field radius: 1.188 degrees


Resolution: 3200x2400

Locations: Remote observatory, Kiev, Ukraine

Data source: Own remote observatory

Remote source: Non-commercial independent facility

Description

SH2-173 is a HII region with a diameter of 77 light years, approximately 8800 light-years away from Earth. It is located in the constellation of Cassiopeia in the Perseus arm, on of the main arms of our Milky Way.

Due to its resemblance to the mask the nebula is often called the "Phantom of the Opera" nebula.

On the full size image there is a NGC103 open cluster and small nebula SH2-172 (right-bottom corner).

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    SH2-173 - Phantom of the Opera HaLRGB, 



    
        

            Sergiy_Vakulenko
    Original
  • SH2-173 - Phantom of the Opera HaLRGB, 



    
        

            Sergiy_Vakulenko
    B

B

Description: Pure Ha

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SH2-173 - Phantom of the Opera HaLRGB, 



    
        

            Sergiy_Vakulenko