Hemisphere:  Northern  ·  Constellation: Orion (Ori)  ·  Contains:  IC 2162
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String of Sharpless objects Sh 2-254 to 259, 



    
        

            JNieto
String of Sharpless objects Sh 2-254 to 259
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String of Sharpless objects Sh 2-254 to 259

Getting plate-solving status, please wait...
String of Sharpless objects Sh 2-254 to 259, 



    
        

            JNieto
String of Sharpless objects Sh 2-254 to 259
Powered byPixInsight

String of Sharpless objects Sh 2-254 to 259

Technical card

Imaging telescopes or lenses: Astro-Physics 130 EDFGT

Imaging cameras: QSI 683 ws

Mounts: ASA DDM60Pro

Software: MaximDL  ·  Pixinsight

Filters: SII 5nm  ·  OIII 5nm  ·  Astrodon H-alpha 5nm


Dates:Dec. 6, 2018

Frames: 134x600" (22h 20')

Integration: 22h 20'

Avg. Moon age: 28.75 days

Avg. Moon phase: 0.68%


Basic astrometry details

Astrometry.net job: 2461923

RA center: 6h 12' 40"

DEC center: +18° 3' 32"

Pixel scale: 1.360 arcsec/pixel

Orientation: 92.780 degrees

Field radius: 0.769 degrees


Resolution: 3276x2412

Locations: Observatorio "Mar de la Frau", Cambrils, Spain

Data source: Backyard

Description

Emission nebulae considered classical Strömgren spheres (https://en.wikipedia.org/wiki/Str%C3%B6mgren_sphere)

Actually there are six Sharpless objects in the picture. I did not intent to catch Sh 2-259 (upper right edge) but eventually it fell inside the frame. Strong H-alpha and Sii signal, but close to zero Oiii signal.

I started this object in March 2017 and finished in December 2018.

Comments

Sky plot

Sky plot

Histogram

String of Sharpless objects Sh 2-254 to 259, 



    
        

            JNieto