Hemisphere:  Northern  ·  Contains:  NGC 7380  ·  NGC7380  ·  PK107-00.1  ·  Sh2-142  ·  Sh2-143
The Wizard Nebula, 



    
        

            lefty7283
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The Wizard Nebula

Technical card

Imaging telescopes or lenses: TPO 6" f/4 Newtonian

Imaging cameras: ZWO ASI1600MM-Pro

Mounts: Orion Sirius EQ-G

Guiding telescopes or lenses: Agena 50mm Deluxe Straight-Through Finder / Guide Scope with Helical Focuser

Guiding cameras: ZWO ASI 120 MC

Software: Nighttime Imaging 'N' Astronomy

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

Accessory: ZWO EFW 8 x 1.25″/31mm  ·  Moonlite Model CR Newtonian 2" Format Focuser  ·  SkyWatcher Quattro Coma Corrector


Dates:Aug. 9, 2020Aug. 16, 2020Aug. 26, 2020

Frames:
Astrodon Ha 31mm 5nm: 24x600" (gain: 139.00) -15C
Astrodon OIII 31mm 3nm: 24x600" (gain: 139.00) -15C
Astrodon SII 31mm 5nm: 22x600" (gain: 139.00) -15C

Integration: 11.7 hours

Darks: ~30

Flats: ~30

Avg. Moon age: 18.36 days

Avg. Moon phase: 45.73%

Bortle Dark-Sky Scale: 6.00


Astrometry.net job: 3818581

RA center: 22h 47' 12"

DEC center: +58° 1' 57"

Pixel scale: 0.762 arcsec/pixel

Orientation: 29.910 degrees

Field radius: 0.990 degrees


Resolution: 7485x5613

Data source: Backyard

Description

[The last time I photographed this nebula was in 2018](https://www.reddit.com/r/astrophotography/comments/a8erew/ngc_7380_the_wizard_nebula/). I'd consider this an improvement. I fiddled around with some new false color combinations on this so any constructive criticism is appreciated. Also made a [time lapse of my telescope photographing this](https://www.youtube.com/watch?v=xLU4TH0KEVo) (the clouds didn't affect things too much). Captured on August 9th 16th, and 26th, 2020 from a Bortle 6 zone.

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**PixInsight Processing:**

* BatchPreProcessing

* SubframeSelector

* StarAlignment

* [Blink](https://youtu.be/sJeuWZNWImE?t=40)

* ImageIntegration

* DrizzleIntegration (2x, VarK=1.5)

**Linear:**

* DynamicCrop

* DynamicBackgroundExtraction

* Deconvolution (Ha only)

* [EZ Denoise](https://darkarchon.internet-box.ch:8443/) (Ha only)

* STF applied via HistogramTransformation to bring each channel nonlinear

**Combining Channels:**

* PixelMath to make classic SHO to RGB image

* Green completely nuked using SCNR

* Pixelmath to make RGB image using ForaxX's palette

> R= (Oiii^~Oiii)*Sii + ~(Oiii^~Oiii)*Ha

> G= ((Oiii*Ha)^~(Oiii*Ha))*Ha + ~((Oiii*Ha)^~(Oiii*Ha))*Oiii

> B= Oiii

* Pixelmath to blend classic and ForaxX SHO images 50:50

**Nonlinear:**

* LRGBCombination using stretched Ha as luminance

* shitloads of [curve](https://i.imgur.com/c9jUDPw.jpg)transformations to adjust lightness, saturation, contract, hues, etc (some with luminance and yellow color masks)

* HistogramTransformation (lower black point)

* ACDNR

* LocalHistogramTransformation

* EZ Star Reduction

* DarkStructureEnhance

* More Curves

* MMT noise reduction

* Resample to 85%

* Annotation

Comments

Author

lefty7283
lefty7283
License: None (All rights reserved)
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The Wizard Nebula, 



    
        

            lefty7283