Hemisphere:  Northern  ·  Constellation: Perseus (Per)
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Sh2-216 Bi-Color RBG Stars, 



    
        

            John Travis
Sh2-216 Bi-Color RBG Stars
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Sh2-216 Bi-Color RBG Stars

Getting plate-solving status, please wait...
Sh2-216 Bi-Color RBG Stars, 



    
        

            John Travis
Sh2-216 Bi-Color RBG Stars
Powered byPixInsight

Sh2-216 Bi-Color RBG Stars

Technical card

Imaging telescopes or lenses: William Optics RedCat 51 Petzval APO

Imaging cameras: ZWO ASI1600MM-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  ·  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. 8, 2020Dec. 17, 2020

Frames:
Baader Planetarium Baader H-Alpha 1,25" 7nm CCD: 241x240" (gain: 139.00) -15C bin 1x1
Baader OIII 8.5nm 1.25": 217x240" (gain: 139.00) -15C bin 1x1
ZWO Blue Filter Optimized for ASI1600: 32x75" (gain: 75.00) -15C bin 1x1
ZWO Green Filter Optimized for ASI1600: 32x75" (gain: 75.00) -15C bin 1x1
ZWO Red Filter Optimized for ASI1600: 32x75" (gain: 75.00) -15C bin 1x1

Integration: 32.5 hours

Darks: ~25

Flats: ~25

Flat darks: ~25

Avg. Moon age: 12.85 days

Avg. Moon phase: 27.46%

Bortle Dark-Sky Scale: 7.00


Basic astrometry details

Astrometry.net job: 4106288

RA center: 4h 44' 6"

DEC center: +46° 35' 56"

Pixel scale: 3.158 arcsec/pixel

Orientation: 1.259 degrees

Field radius: 2.383 degrees


Resolution: 4395x3194

Data source: Backyard

Description

Sh2-216 Bi-Color with RGB stars. This planetary nebula is very large and very faint! It is also said to be the second closest to the earth.
While capturing this nebula I was not able to really see any noticeable signal. I was doubtful of what the final outcome might be. But, after capturing a good bit of data, stretching the resulting stack really hard, removing the stars, and adding back in RGB stars this was my final result. A little noisy but none the less an image. While looking at this image it reminds me of a jellyfish with no tendrils and to the lower left is a crab creature with two glowing eyes. Maybe I have stared at it too long? LOL!

Overall I think I could have benefited greatly with a narrower band OIII filter and Ha filter. As my current ones are 7nm. Hmmmm... maybe some 3nm filters are in order? Thanks go to Uwe for putting this thought in my head. LOL!

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