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The Pillars of Creation with 24", 



    
        

            KuriousGeorge

The Pillars of Creation with 24"

Getting plate-solving status, please wait...
The Pillars of Creation with 24", 



    
        

            KuriousGeorge

The Pillars of Creation with 24"

Imaging telescopes or lenses: Planewave CDK24

Imaging cameras: FLI Proline 16803

Mounts: Planewave L600

Guiding cameras: Starlight Xpress Ultrastar

Focal reducers: None

Software: Planewave PWI3  ·  Planewave PWI4  ·  PixInsight 1.8  ·  Sequence Generator Pro  ·  Photoshop CS3  ·  PHD Guiding 2  ·  CCDWare CCD Inspector  ·  Maxim DL6

Filters: Chroma 50 mm 5nm SII  ·  Astrodon 50 mm 5 nm Ha  ·  Astrodon 50 mm 5 nm OIII

Accessory: FLI CFW-5-7  ·  Astrodon Monster MOAG  ·  Hedrick Focuser  ·  Planewave Delta-T  ·  Planewave EFA


Dates:June 15, 2020June 16, 2020June 18, 2020

Frames:
Astrodon 50 mm 5 nm Ha: 35x300" (2h 55') -30C bin 1x1
Astrodon 50 mm 5 nm OIII: 18x300" (1h 30') -30C bin 1x1
Chroma 50 mm 5nm SII: 18x300" (1h 30') -30C bin 1x1

Integration: 5h 55'

Darks: ~20

Flats: ~60

Flat darks: ~60

Bias: ~20

Avg. Moon age: 25.35 days

Avg. Moon phase: 19.49%

Mean SQM: 21.50

Mean FWHM: 1.80


Basic astrometry details

Astrometry.net job: 3636471


Resolution: 1316x1220

Locations: KG Observatory, Julian, CA, United States

Data source: Backyard

Description

My goal with this project was to see how close I could get to the 2015 Hubble shot celebrating 25 years in orbit...

Hubble Pillars of Creation

Fortunately my Ha, OIII and SII filters are very close to those used by Hubble...

Blue: F502N (OIII)
Green: F657N (Hα + NII)
Red: F673N (SII)

... so similar color was in sight. (-:

The biggest challenge was to capture good Ha for detail. This uses 35 of my best 5-minute Ha exposures over several days. FWHM on Ha subs is between 1.7" and 2.1".

After combining SII, OIII and Ha, uncolored Ha was added as a soft light layer to help with detail and contrast.

Minor noise reduction was applied to SII and OIII. No noise reduction on Ha to help maximize detail.

Finally, a very mild Unsharp Mask was applied over a cropped 2X Drizzle for additional detail.

Comments

Revisions

    The Pillars of Creation with 24", 



    
        

            KuriousGeorge
    Original
    The Pillars of Creation with 24", 



    
        

            KuriousGeorge
    B
  • Final
    The Pillars of Creation with 24", 



    
        

            KuriousGeorge
    C

B

Description: Added 85 minutes of Ha for slightly less noise.

Uploaded: ...

C

Description: Minor tweaks to sharpness, color, star size and color noise.

Uploaded: ...

Histogram

The Pillars of Creation with 24", 



    
        

            KuriousGeorge