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Contains:  California nebula, NGC 1499, The star ξPer
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NGC 1499 California Nebula in Natural Colour Narrowband, 



    
        

            Francois Theriault
NGC 1499 California Nebula in Natural Colour Narrowband
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NGC 1499 California Nebula in Natural Colour Narrowband

Technical card

Imaging telescopes or lenses:AstroTech AT72ED

Imaging cameras:SBIG STF8300M SBIG STF-8300M

Mounts:CGEM

Guiding telescopes or lenses:Orion Mini 50mm Guide Scope

Guiding cameras:Starshoot Autoguider

Software:Adobe Photoshop 5 CS

Filters:Baader Ha, OIII, SII

Accessory:Astrotech field flattner


Dates:Dec. 10, 2016

Frames:
Ha: 9x600" bin 1x1
OIII: 9x600" bin 1x1
SII: 9x600" bin 1x1

Integration: 4.5 hours

Avg. Moon age: 10.74 days

Avg. Moon phase: 82.74%


Basic astrometry details

Astrometry.net job: 1369830

RA center: 4h 0' 43"

DEC center: +36° 37' 55"

Pixel scale: 2.424 arcsec/pixel

Orientation: 313.172 degrees

Field radius: 1.414 degrees


Resolution: 3352x2532

Description

My second attempt at "natural colour" narrowband imaging. I used Ha, OIII and SII in the following proportions:

Starless Red = Ha + 24% SII
Starless Green = OIII
Starless Blue = OIII + 15% Ha
Luminance = Ha + 6% OIII + 10% SII

Comments

Author

FrancoisT
Francois Theriault
License: None (All rights reserved)
2111
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NGC 1499 California Nebula in Natural Colour Narrowband, 



    
        

            Francois Theriault