Hemisphere:  Northern  ·  Constellation: Cepheus (Cep)  ·  Contains:  NGC 7380  ·  NGC7380  ·  PK107-00.1  ·  Sh2-142  ·  Sh2-143
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The Wizard nebula Ced206/Cr452/LBN511/NGC7380/Sh2-142/Sh2-143 (c-sho), 



    
        

            Ram Samudrala
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The Wizard nebula Ced206/Cr452/LBN511/NGC7380/Sh2-142/Sh2-143 (c-sho)

Imaging telescopes or lenses: Takahashi FC-100DF

Imaging cameras: QHY163M

Mounts: Software Bisque Paramount MyT

Software: SharpCap Pro  ·  PixInsight

Filters: Astrodon Ha 1.25 5nm  ·  Astrodon OIII 1.25 3nm  ·  Astrodon SII 31mm 3nm


Dates:June 18, 2020June 19, 2020June 20, 2020June 21, 2020June 25, 2020

Frames:
Astrodon Ha 1.25 5nm: 112x300" (gain: 200.00) -15C bin 1x1
Astrodon OIII 1.25 3nm: 102x300" (gain: 200.00) -15C bin 1x1
Astrodon SII 31mm 3nm: 110x300" (gain: 200.00) -15C bin 1x1

Integration: 27.0 hours

Darks: ~40

Avg. Moon age: 17.60 days

Avg. Moon phase: 6.35%

Bortle Dark-Sky Scale: 3.00

Mean FWHM: 3.00

Temperature: 15.00


Astrometry.net job: 3646659

RA center: 22h 47' 18"

DEC center: +58° 2' 35"

Pixel scale: 1.062 arcsec/pixel

Orientation: 0.086 degrees

Field radius: 0.777 degrees


Resolution: 4304x3034

Locations: Ram Samudrala, Youngstown, NY, United States

Data source: Backyard

Description

I've been meaning to do this target for a long while but I removed the reducer on my FC100DF so I could get it to fill the frame a bit better (you can see the consequence of not having a flattener with the corner stars and focus is difficult since my FC100DF doesn't have a microfocusser which I've just finally ordered so I can tighten this part up a bit, which should show up in my next image of the NGC281/Pac Man Nebula). This is the first target I've imaged with the FC100DF at its native focal length and it's also the first target I've managed to finish processing since last fall.

The Wizard emission nebula is a relatively bright and popular target for astrophotographers. The star forming region was discovered as an open cluster (Cr452/NGC7380) in the constellation Cepheus by Caroline Herschel, whose husband included it in his catalogue. The large active region has a radius of 100 light years and is 7200 light years away from us. The ionised atomic hydrogen from the young stars intermix with space dust in a manner resembling frothy waves and blue flames. The nebula is expected to a last a few million years, though some of the stars will outlive our sun. In addition, there's a smaller nebula (Sh2-143) that is often overlooked when talking about the magical wizard as well as a supernova remnant (PK107-00.1).

Given that it had been several months since I had done anything, I was a bit rusty and I had a tough time deciding which version to go with so I decided to showcase a few of them so people can decide for themselves (though my favourite choice is the first one and it has the least amount of processing). Most have to do variations in colours of the "blue flames" and "waves" regions as well as the background but the last one was done by creating a starless version of the nebula coloured using the Photometric Color Calibration process in PixInsight (first time doing both!) and then stars from a simpler version were put back in (thanks to Stephen King et al. for introducing me to the star removal technique). The process worked as far as mixing and matching goes, but starting with the PCC (which may have been a mistake or I didn't do it properly) and working my way to the final image via the starless process caused a some loss of detail that is present when using the more conventional approaches. Still, I've included it here to show what I did using the star removal approach.

As always, thanks for looking!

Comments

Revisions

  • Final
    The Wizard nebula Ced206/Cr452/LBN511/NGC7380/Sh2-142/Sh2-143 (c-sho), 



    
        

            Ram Samudrala
    Original
  • The Wizard nebula Ced206/Cr452/LBN511/NGC7380/Sh2-142/Sh2-143 (c-sho), 



    
        

            Ram Samudrala
    B
  • The Wizard nebula Ced206/Cr452/LBN511/NGC7380/Sh2-142/Sh2-143 (c-sho), 



    
        

            Ram Samudrala
    C
  • The Wizard nebula Ced206/Cr452/LBN511/NGC7380/Sh2-142/Sh2-143 (c-sho), 



    
        

            Ram Samudrala
    D
  • The Wizard nebula Ced206/Cr452/LBN511/NGC7380/Sh2-142/Sh2-143 (c-sho), 



    
        

            Ram Samudrala
    E
  • The Wizard nebula Ced206/Cr452/LBN511/NGC7380/Sh2-142/Sh2-143 (c-sho), 



    
        

            Ram Samudrala
    F

B

Description: This is just the same as the other one (both are minimally processed) but this is without the final sharpening using Multiscale Linear Transform according to the LVA tutorials.

Uploaded: ...

C

Description: Different colour choices.

Uploaded: ...

D

Description: Different colour choices.

Uploaded: ...

E

Description: Created by first making a starless version of the nebula using Photometric Colour Calibration in PixInsight and then combining that with stars from a prior step.

Uploaded: ...

F

Description: Ha only.

Uploaded: ...

Sky plot

Sky plot

Histogram

The Wizard nebula Ced206/Cr452/LBN511/NGC7380/Sh2-142/Sh2-143 (c-sho), 



    
        

            Ram Samudrala