Hemisphere:  Northern  ·  Constellation: Cassiopeia (Cas)  ·  Contains:  The star 12Cas
Sh 2-173, The Phantom of the Opera Nebula in HaGB, 



    
        

            Madratter
Sh 2-173, The Phantom of the Opera Nebula in HaGB
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Sh 2-173, The Phantom of the Opera Nebula in HaGB

Technical card

Imaging telescopes or lenses: Astro-Tech AT8RC

Imaging cameras: SBIG STF-8300M

Mounts: Paramount MyT

Guiding cameras: QHY5L-II Mono

Focal reducers: CCDT67

Software: PixInsight  ·  Voyager

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

Accessory: Dew-Not DN09 Dew Heater  ·  SBIG OAG-8300  ·  Moonlite CSL 2.5" Threaded Focuser  ·  Kendrick Standard Dual Channel Dew Controller


Dates:Nov. 16, 2020Nov. 20, 2020

Frames:
Baader Blue 36mm: 17x600" -20C bin 1x1
Baader Green 36mm: 16x600" -20C bin 1x1
Baader Ha 36mm 7nm: 18x1200" -20C bin 1x1

Integration: 11.5 hours

Avg. Moon age: 3.61 days

Avg. Moon phase: 17.67%

Bortle Dark-Sky Scale: 4.00


Basic astrometry details

Astrometry.net job: 4027038

RA center: 0h 22' 3"

DEC center: +61° 43' 48"

Pixel scale: 0.931 arcsec/pixel

Orientation: 359.521 degrees

Field radius: 0.535 degrees


Resolution: 3308x2488

Data source: Backyard

Description

This is a HaGB rendition of SH 2-173. Pixinsight does a nice job of color balancing that with the photometric color calibration process.

While I attempted to collect OIII data for this object, I now understand why this object almost never shows up as a SHO or HOO image. The OIII for this is very very faint.

Comments

Sky plot

Sky plot

Histogram

Sh 2-173, The Phantom of the Opera Nebula in HaGB, 



    
        

            Madratter

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