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Contains:  California nebula, NGC 1499, The star ξPer
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NGC1499 California Nebula . . . variations, 





    
        

            Barry Wilson
NGC1499 California Nebula . . . variations

NGC1499 California Nebula . . . variations

Technical card

Resolution: 3324x2496

Dates:Dec. 27, 2014

Frames:
Baader Planetarium B 36mm: 12x300" bin 1x1
Baader Planetarium G 36mm: 12x300" bin 1x1
Astrodon Ha 5mm 36mm: 8x1200" bin 1x1
Baader Planetarium R 36mm: 12x300" bin 1x1

Integration: 5.7 hours

Avg. Moon age: 6.01 days

Avg. Moon phase: 35.58%

Astrometry.net job: 902053

RA center: 60.393 degrees

DEC center: 36.380 degrees

Pixel scale: 3.377 arcsec/pixel

Orientation: 91.150 degrees

Field radius: 1.950 degrees

Description

A collection of image variations from my R, G, B and Ha data for NGC1499 combined with different techniques in PixInsight. I've processed these images between Christmas family fun and duties; narrowly avoiding incurring their wrath!

Rev A: Ha data only
Rev B: R_Ha_G_B with 50% of the Ha in the R channel
Rev C: Ha_R_G_B with 70% of the Ha in the R channel
RevD: adjusted saturation lowering pink tone to more red
Rev E: adjust saturation again
Rev F - completely reprocessed with new PI techniques; aiming for a natural look.
Rev G: revisiting old data.

I've decided in the end to retain the faint blue halos of the large stars; I had removed the halos in previous iterations but, whether it is because I've been staring at the screen too long, felt they looked more 'natural' with the halo (and PI doesn't have a very effective halo removal routine IMHO; it works to a degree).

Thanks for looking. Comments always welcome.

Barry

Comments

Author

Barry-Wilson
Barry Wilson
License: None (All rights reserved)
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Revisions

  • NGC1499 California Nebula . . . variations, 





    
        

            Barry Wilson
    Original
  • NGC1499 California Nebula . . . variations, 





    
        

            Barry Wilson
    B
  • NGC1499 California Nebula . . . variations, 





    
        

            Barry Wilson
    C
  • NGC1499 California Nebula . . . variations, 





    
        

            Barry Wilson
    D
  • NGC1499 California Nebula . . . variations, 





    
        

            Barry Wilson
    E
  • NGC1499 California Nebula . . . variations, 





    
        

            Barry Wilson
    F
  • Final
    NGC1499 California Nebula . . . variations, 





    
        

            Barry Wilson
    G

Sky plot

Sky plot

Histogram

NGC1499 California Nebula . . . variations, 





    
        

            Barry Wilson