Hemisphere:  Northern  ·  Constellation: Cygnus (Cyg)  ·  Contains:  Crescent Nebula  ·  IC 1311  ·  IC 4996  ·  NGC 6871  ·  NGC 6888  ·  NGC 6910  ·  The star 27Cyg  ·  The star 28Cyg  ·  The star 29Cyg  ·  The star 34Cyg  ·  The star 36Cyg  ·  The star Sadr (γCyg)
Getting plate-solving status, please wait...
The neighborhood around NGC 6888, 



    
        

            Craig Bobchin
The neighborhood around NGC 6888
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The neighborhood around NGC 6888

Getting plate-solving status, please wait...
The neighborhood around NGC 6888, 



    
        

            Craig Bobchin
The neighborhood around NGC 6888
Powered byPixInsight

The neighborhood around NGC 6888

Equipment

Imaging Telescopes Or Lenses
Pentax DA 300mm F4.0
Imaging Cameras
Pentax K-1
Mounts
LOSMANDY G-11 Gemini 1 Losmandy G-11
Software
Adobe Photoshop CC 2018 Photoshop · Sequator
Guiding Telescopes Or Lenses
ZWO 30mm f/4 Guide Scope
Guiding Cameras
Lacerta M-Gen III

Acquisition details

Dates:
July 17, 2021
Frames:
44x180" (2h 12')
Integration:
2h 12'
Avg. Moon age:
7.46 days
Avg. Moon phase:
50.81%

Basic astrometry details

Astrometry.net job: 4782316

RA center: 20h12m12s.10

DEC center: +38°1221

Pixel scale: 3.442 arcsec/pixel

Orientation: 90.535 degrees

Field radius: 3.904 degrees

Resolution: 6720x4640

Locations: Home, Timberwood Park/San Antonio, TX, United States

Data source: Backyard

Description

A good clear night last night. And so I decided to take advantage of the situation. 

I decided to try shooting this from my Bortle 5 skies.  The Cresent Nebula is towards the top center (kind of small I  know)  I am not sure I am entirely happy with how this turned out. I am going to try reprocessing in other software. 

Stock Pentax K-1

Pentax D-FA * 300mm f/4

ISO 400

F/5

44x180s

MGEN III Guided & dithered on Losmandy G-11

Calibration & integration in Sequator

Processed in Photoshop using Astronomy tools and Astro Panel 5

Astro panel:

Underexposed processing 

Select small stars and reduce

Enhance Nebula sharpness

Dynamic boost

Astronomy Tools:

Local contrast enhancement 

Enhance star color

Enhance DSO

Some light contrast and clarity in ACR

Cropped in Photoshop

Comments

Revisions

  • The neighborhood around NGC 6888, 



    
        

            Craig Bobchin
    Original
  • The neighborhood around NGC 6888, 



    
        

            Craig Bobchin
    B
  • Final
    The neighborhood around NGC 6888, 



    
        

            Craig Bobchin
    C

B

Description: Reprocessing of NGC 6888 and surrounding neighborhood.

The original dark frames had this weird gradient what was causing problems in calibration and integration. So I reprocessed withput them.

Uploaded: ...

C

Description: Reprocessing of NGC 6888 and surrounding neighborhood.

The original dark frames had this weird gradient what was causing problems in calibration and integration. So I reprocessed withput them.

Uploaded: ...

Sky plot

Sky plot

Histogram

The neighborhood around NGC 6888, 



    
        

            Craig Bobchin