Hemisphere:  Northern  ·  Constellation: Cepheus (Cep)  ·  Contains:  NGC 7538
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Northern Lagoon Nebula - More Natural Look, 



    
        

            Chuck's Astrophotography
Northern Lagoon Nebula - More Natural Look
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Northern Lagoon Nebula - More Natural Look

Technical card

Imaging telescopes or lenses: Explore Scientific ES127mm f/7.5 ED APO triplet

Imaging cameras: ZWO ASI1600MM-Cool

Mounts: Celestron CGX

Guiding telescopes or lenses: Orion ST 80

Guiding cameras: Lodestar X2

Software: Photoshop CS3  ·  PHD2  ·  Sequence Generator Pro  ·  PixInsight

Filters: OIII  ·  Ha

Accessory: ZWO 8x 1.25" Filter Wheel (EFW)  ·  Hotech 2" SCA Self-Centering Field Flattene Hotech SCA Field Flattner  ·  MoonLite 2.5" Focuser with MotorFocus  ·  QHYCCD PoleMaster



Basic astrometry details

Astrometry.net job: 2997959

RA center: 23h 14' 7"

DEC center: +61° 26' 27"

Pixel scale: 0.831 arcsec/pixel

Orientation: 178.319 degrees

Field radius: 0.638 degrees


Resolution: 3352x4398

Data source: Backyard

Description

This is my second attempt at NGC 7538 and this time I tried for a more natural look, but still using narrowband filters. I divided like color channels with the following:

Red: Ha (80%) and SII (20%)
Green: OIII: (100%)
Green: OIII: (85%) and Ha (15%)

I also tried a vertical rotation - I like this view better.

All of the data was captured in October, 2019.

Astronomik Ha: 135x240" (gain: 139, offset: 21)
Astronomik OIII: 86x240" (gain: 75, offset: 15)
Astronomik Ha: 105x240" (gain: 139, offset: 21)

Integration: 21.73 hours

Comments

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Northern Lagoon Nebula - More Natural Look, 



    
        

            Chuck's Astrophotography