Hemisphere:  Northern  ·  Constellation: Cassiopeia (Cas)  ·  Contains:  PK128-04.1  ·  Sh2-188
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Simeis 22 / SH2-188 - The Dolphin Nebula (Bicolor), 



    
        

            Frank Breslawski
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Simeis 22 / SH2-188 - The Dolphin Nebula (Bicolor)

Getting plate-solving status, please wait...
Simeis 22 / SH2-188 - The Dolphin Nebula (Bicolor), 



    
        

            Frank Breslawski
Powered byPixInsight

Simeis 22 / SH2-188 - The Dolphin Nebula (Bicolor)

Equipment

Imaging Telescopes Or Lenses
Lacerta Newton ohne Namen 250/1200
Imaging Cameras
Astrel Instruments AST8300
Mounts
EQ8
Filters
Astronomik H-Alpha 6nm CCD · Astronomik OIII 6nm CCD
Accessories
GPU Pal Gyulai GPU 2" Aplanatic Coma Corrector
Software
PixInsight 1.8 · Zipproth GmbH Straton 2.0
Guiding Cameras
Lacerta MGEN2 with 9x50

Acquisition details

Dates:
Sept. 30, 2018 ·  Oct. 4, 2018
Frames:
Astronomik H-Alpha 6nm CCD: 28x900" (7h) -20C bin 1x1
Astronomik OIII 6nm CCD: 24x900" (6h) -20C bin 1x1
Integration:
13h
Darks:
50
Flats:
10
Bias:
200
Avg. Moon age:
22.27 days
Avg. Moon phase:
48.86%
Bortle Dark-Sky Scale:
4.00

RA center: 01h30m04s.805

DEC center: +58°2844.20

Pixel scale: 0.928 arcsec/pixel

Orientation: -88.128 degrees

Field radius: 0.306 degrees

More info:Open 

Resolution: 1491x1848

Locations: Home, Bergisches Land, Germany

Data source: Backyard

Description

And finally I also reprocessed my attempt on Simeis 22 (aka Sharpless 188, SH2-188 and the Dolphin Nebula). This time it's more like Hubble colors. Not that easy with only Bicolor data… ;-) This target is an unusual planetary nebula in the galactic disk, approximately 850 light-years away from earth in the northern constellation of Cassiopeia.

I spent around 13 hours for collecting H-Alpha and OIII data for this bicolor.

Comments

Sky plot

Sky plot

Histogram

Simeis 22 / SH2-188 - The Dolphin Nebula (Bicolor), 



    
        

            Frank Breslawski

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Narrowband imaging