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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

NGC 1499 California Nebula in Natural Colour Narrowband

Technical card

Imaging telescope or lens:AstroTech AT72ED

Imaging camera:SBIG STF8300M SBIG STF-8300M

Mount:CGEM

Guiding telescope or lens:Orion Mini 50mm Guide Scope

Guiding camera:Starshoot Autoguider

Software:Adobe Photoshop 5 CS

Filter:Baader Ha, OIII, SII

Accessory:Astrotech field flattner

Resolution: 3352x2532

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%

Astrometry.net job: 1369830

RA center: 60.181 degrees

DEC center: 36.632 degrees

Pixel scale: 2.424 arcsec/pixel

Orientation: -133.172 degrees

Field radius: 1.414 degrees

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)
2001
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NGC 1499 California Nebula in Natural Colour Narrowband, 





    
        

            Francois Theriault