Hemisphere:  Northern  ·  Constellation: Auriga (Aur)  ·  Contains:  NGC 1798
Getting plate-solving status, please wait...
Sh2-221 Supernova Remnant, 



    
        

            John Travis
Sh2-221 Supernova Remnant
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Sh2-221 Supernova Remnant

Getting plate-solving status, please wait...
Sh2-221 Supernova Remnant, 



    
        

            John Travis
Sh2-221 Supernova Remnant
Powered byPixInsight

Sh2-221 Supernova Remnant

Technical card

Imaging telescopes or lenses: William Optics RedCat 51 Petzval APO

Imaging cameras: ZWO ASI183MM-Cool

Mounts: Paramount MyT

Guiding telescopes or lenses: QHYCCD QHY Mini Guide Scope

Guiding cameras: QHYCCD QHY 5L-II mono

Software: Aries Productions Astro Pixel Processor APP  ·  Software Bisque The SkyX Professional  ·  Adobe Photoshop CC  ·  PHD2 Guiding  ·  Starkeeper Software Voyager  ·  PixInsight 1.8 Ripley

Filters: Baader OIII 8.5nm 1.25"  ·  Baader Planetarium Baader H-Alpha 1,25" 7nm CCD  ·  ZWO Blue Filter Optimized for ASI1600  ·  ZWO Green Filter Optimized for ASI1600  ·  ZWO Red Filter Optimized for ASI1600

Accessory: ZWO Optical EFW 8x1.25" filter wheel  ·  AF2 RED CAT


Dates:Dec. 21, 2020Jan. 3, 2021Jan. 17, 2021

Frames:
Baader Planetarium Baader H-Alpha 1,25" 7nm CCD: 192x480" (25h 36') (gain: 111.00) -15C bin 1x1
Baader OIII 8.5nm 1.25": 173x480" (23h 4') (gain: 111.00) -15C bin 1x1
ZWO Blue Filter Optimized for ASI1600: 30x75" (37' 30") (gain: 75.00) -15C bin 1x1
ZWO Green Filter Optimized for ASI1600: 30x75" (37' 30") (gain: 75.00) -15C bin 1x1
ZWO Red Filter Optimized for ASI1600: 30x75" (37' 30") (gain: 75.00) bin 1x1

Integration: 50h 32' 30"

Darks: ~25

Flats: ~25

Flat darks: ~25

Avg. Moon age: 10.11 days

Avg. Moon phase: 48.35%

Bortle Dark-Sky Scale: 7.00


Basic astrometry details

Astrometry.net job: 4194151

RA center: 5h 0' 29"

DEC center: +46° 45' 3"

Pixel scale: 3.161 arcsec/pixel

Orientation: 178.663 degrees

Field radius: 2.427 degrees


Resolution: 4407x3339

Locations: Home , Huntsville, Alabama, United States

Data source: Backyard

Description

Sh2-221 Supernova Remnant Bi-Color RGB Stars. A very faint supernova remnant located in Auriga. I do believe this is the faintest object to date that I have tried to image. It was certainly a challenge and ideally, it would have been nice to have even more data than what I did manage to capture. But, having said that I am not sure it would have made too much of a difference. Hope you enjoy it as it is a rarely imaged object here on Astrobin.

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