Cookie consent

AstroBin saves small pieces of text information (cookies) on your device in order to deliver better content and for statistical purposes. You can disable the usage of cookies by changing the settings of your browser. By browsing AstroBin without changing the browser settings, you grant us permission to store that information on your device.

I agree
Contains:  California nebula, NGC 1499, The star ξPer
Getting plate-solving status, please wait...
California Nebula mosaic bi-color, 





    
        

            Eric Solís
California Nebula mosaic bi-color

California Nebula mosaic bi-color

Technical card

Resolution: 2999x5931

Dates:Dec. 7, 2017Dec. 16, 2017

Frames:
ZWO Ha 36mm: 30x300" (gain: 139.00) -20C bin 2x2
ZWO SII 36mm: 30x300" (gain: 139.00) -20C bin 2x2

Integration: 5.0 hours

Darks: ~15

Flats: ~50

Bias: ~115

Avg. Moon age: 23.55 days

Avg. Moon phase: 41.29%

Bortle Dark-Sky Scale: 5.00

Temperature: -5.00

Astrometry.net job: 1868138

RA center: 4h 0' 1"

DEC center: +36° 28' 4"

Pixel scale: 2.075 arcsec/pixel

Orientation: 45.873 degrees

Field radius: 1.915

Locations: Backyard, Milford, MA, United States

Description

Six panel mosaic of the California Nebula in Ha and SII.

Used Straton to remove the stars from the individual narrow band images and then attempted the "tone mapping" technique to combine the Ha and SII data. Used Ha alone as luminance. Added the stars back at the end of processing.

Still needs a lot of work. The SII mosaic was much less clean than the Ha mosaic, so it took a lot of work to get them combined in a way that didn't degrade the final image compared to the Ha-only mosaic. SII needs more time, but wanted to post something so I can work on some other projects in the meantime.

Comments

Author

Ejsboston
Eric Solís
License: None (All rights reserved)
631
Like

Revisions

  • California Nebula mosaic bi-color, 





    
        

            Eric Solís
    Original
  • California Nebula mosaic bi-color, 





    
        

            Eric Solís
    B
  • California Nebula mosaic bi-color, 





    
        

            Eric Solís
    C
  • Final
    California Nebula mosaic bi-color, 





    
        

            Eric Solís
    D

B

Allowed the stars to have some color

C

slightly less neon colors

D

Tweaked the color combination

Sky plot

Sky plot

Histogram

California Nebula mosaic bi-color, 





    
        

            Eric Solís