Hemisphere:  Northern  ·  Constellation: Cassiopeia (Cas)  ·  Contains:  PK128-04.1  ·  Sh2-188
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)

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)

Technical card

Imaging telescopes or lenses: Lacerta Newton ohne Namen 250/1200

Imaging cameras: Astrel Instruments AST8300

Mounts: EQ8

Guiding cameras: Lacerta MGEN2 with 9x50

Software: PixInsight 1.8  ·  Zipproth GmbH Straton 2.0

Filters: Astronomik H-Alpha 6nm CCD  ·  Astronomik OIII 6nm CCD

Accessory: GPU Pal Gyulai GPU 2" Aplanatic Coma Corrector


Dates:Sept. 30, 2018Oct. 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


Astrometry.net job: 3247546

RA center: 1h 30' 4"

DEC center: +58° 28' 44"

Pixel scale: 0.928 arcsec/pixel

Orientation: -88.128 degrees

Field radius: 0.306 degrees


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

In these public groups

Narrowband imaging