Hemisphere:  Northern  ·  Constellation: Cygnus (Cyg)  ·  Contains:  The star 10Vul  ·  The star 17Cyg  ·  The star 2Cyg  ·  The star 3Vul  ·  The star 8Cyg  ·  The star 9Cyg  ·  The star Albireo (β1Cyg)  ·  The star β2Cyg  ·  The star φCyg  ·  The star χCyg
Getting plate-solving status, please wait...
Sh2-91 Super Nova Remnant with stars reduced, 



    
        

            David Elmore
Sh2-91 Super Nova Remnant with stars reduced
Powered byPixInsight

Sh2-91 Super Nova Remnant with stars reduced

Getting plate-solving status, please wait...
Sh2-91 Super Nova Remnant with stars reduced, 



    
        

            David Elmore
Sh2-91 Super Nova Remnant with stars reduced
Powered byPixInsight

Sh2-91 Super Nova Remnant with stars reduced

Technical card

Imaging telescopes or lenses: Borg 55FL

Mounts: iOptron GEM45EC

Guiding telescopes or lenses: Vixen VSD 100 f/3.8

Guiding cameras: QHYCCD 5L-II M

Software: Astro Pixel Precessor

Filters: IDAS NBZ

Accessory: ZWO EAF Electronic Auto Focuser  ·  Starlight Xpress Filter-wheel 5x2"


Dates:May 9, 2021

Frames: 26x600" (4h 20')

Integration: 4h 20'

Avg. Moon age: 27.47 days

Avg. Moon phase: 4.72%


Basic astrometry details

Astrometry.net job: 4489615

RA center: 19h 35' 40"

DEC center: +29° 43' 48"

Pixel scale: 5.927 arcsec/pixel

Orientation: 92.062 degrees

Field radius: 6.025 degrees


Resolution: 6088x4062

Data source: Own remote observatory

Remote source: Dark Sky New Mexico

Description

Sharpless2-91 is a super nova remnant in Cygnus near Albirio. An on-line search revealed differing information but this explosion likely occurred about 30,000 years ago. The entire SNR spans Sh2-91 as the southern most and predominant component but also Sh2-94 and Sh2-96.

Since this object is buried in the plane of the Milky Way it is hard to differentiate from the star background. Two techniques increase contrast of the SNR to the stars, using dual narrowband with a one shot color camera and using Starnet++ to eliminate all stars then adding 1/3 of the original back to the starless image to gain a little bit of reality.

Comments

Sky plot

Sky plot

Histogram

Sh2-91 Super Nova Remnant with stars reduced, 



    
        

            David Elmore