Hemisphere:  Northern  ·  Constellation: Cepheus (Cep)  ·  Contains:  The star Garnet Star (μCep)
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Herschel's Garnet Star, 



    
        

            Kathy Walker
Herschel's Garnet Star
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Herschel's Garnet Star

Equipment

Imaging Telescopes Or Lenses
Orion 200mm f/4 Newtonian astrograph
Imaging Cameras
Atik 383L+ mono
Mounts
HEQ5 Pro
Filters
Astrodon 5nm Halpha · Astrodon LRGB
Accessories
TeleVue Paracorr Type 2
Software
AstroTotilla · Stark-Labs Nebulosity3.1 · Pixinsight 1.8 · PHD2
Guiding Telescopes Or Lenses
KW Telescopes KWIQ Guider
Guiding Cameras
QHY5

Acquisition details

Dates:
Sept. 23, 2014 ·  Sept. 24, 2014
Frames:
Astrodon 5nm Halpha: 4x600" (40') -20C
Astrodon 5nm Halpha: 3x900" (45') -20C
Astrodon LRGB: 8x300" (40') -20C
Integration:
2h 5'
Avg. Moon age:
14.52 days
Avg. Moon phase:
0.31%

Basic astrometry details

Astrometry.net job: 373127

RA center: 21h42m32s.6

DEC center: +58°3820

Pixel scale: 1.203 arcsec/pixel

Orientation: -170.914 degrees

Field radius: 0.688 degrees

Resolution: 620x460

Locations: Baie Ste. Marie Observatory, St. Bernard, Nova Scotia, Canada

Description

Herschel's Garnet Star (mu Cephei) and the edge of IC1396.

Due to technical issues, the frames after the meridian flip were lost, including all of the Red and Luminance frames. The momnochromatic look of the nebulosity comes from using a synthetic Luminance channel that is largely Ha. THe red channel is all Ha.

The patch of nebulosity in the 2 o'clock direction from mu Cephei is GN 21.39.5.

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Herschel's Garnet Star, 



    
        

            Kathy Walker