Hemisphere:  Northern  ·  Constellation: Cepheus (Cep)  ·  Contains:  Sh2-136  ·  VdB141
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Ghost Nebula Sh2-136, 



    
        

            Anthony Quintile
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Ghost Nebula Sh2-136

Getting plate-solving status, please wait...
Ghost Nebula Sh2-136, 



    
        

            Anthony Quintile
Powered byPixInsight

Ghost Nebula Sh2-136

Imaging telescopes or lenses: Celestron C9.25 XLT

Imaging cameras: ZWO ASI2600MC Pro

Mounts: Losmandy G11 Gemini 2

Guiding telescopes or lenses: Celestron C9.25 XLT

Guiding cameras: ZWO ASI120MM Mini

Focal reducers: Starizona SCT Corrector IV - 0.63X Reducer / Coma Corrector

Software: Phd2  ·  Pleaides Astrophoto PixInsight 1.8.8-6  ·  SharpCap 2.9  ·  Photoshop CC 2019

Filters: Astronomik UV-IR Blockfilter

Accessory: zwo EAF  ·  Celestron OAG #93648


Dates:Sept. 9, 2021

Frames: 240x300" (20h)

Integration: 20h

Avg. Moon age: 2.64 days

Avg. Moon phase: 7.68%


RA center: 21h16m19s.169

DEC center: +68°1456.40

Pixel scale: 0.525 arcsec/pixel

Orientation: 178.646 degrees

Field radius: 0.505 degrees

More info:Open 


Resolution: 3934x5681

Locations: Home, Flagstaff, AZ, United States

Data source: Backyard

Description

This is my second image with my new C9.25, and my first with the new Starizona SCT Corrector IV, and the first with stacking in PI since starting Adam Block's Fundamentals tutorials.

This image represents the culmination of learning and/or troubleshooting several things.

I realized that my ASI2600MC Pro was vibrating because of the fan, (resolved with a Fractal fan), which was apparent when shooting with the SCT.

The Starizona SCT Corrector IV resolves some chromatic aberration issues since it is made with ED glass, unlike earlier iterations. I struggled especially with star color with all of my SCT images until now. I cannot recommend this corrector highly enough! Get this if you have an SCT!

I am plugging through Adam Block's Fundamentals Pixinsight training. This image was stacked using the NSG Script (and other advice from Adam's training). The NSG script seems to resolve several questions I have been mulling about how to weight or cull data shot when there are high, thin clouds or thin wildfire smoke in the upper atmosphere, as well as mitigating gradients. This is done "at the source" during stacking, which seems pretty smart. Check out the  NSG Script, and if you are wanting to learn PI the right way, not only what those settings do but why, I highly recommend Adam's course. Be prepared to spend some time, as I have spent several hours with the courses, and I feel like I am only skimming the surface of his offerings, but highly worth it.

As with all of my images, I feel like I could do better with more knowledge on processing. The more I know, the worse this feeling gets. This is a personal issue.

Comments

Revisions

    Ghost Nebula Sh2-136, 



    
        

            Anthony Quintile
    Original
  • Final
    Ghost Nebula Sh2-136, 



    
        

            Anthony Quintile
    B

B

Description: I had over reduced the star brightness which led to the stars having weird artifacts. I corrected that.

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Histogram

Ghost Nebula Sh2-136, 



    
        

            Anthony Quintile