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:  NGC 5195, Whirlpool galaxy, M 51, NGC 5194
Getting plate-solving status, please wait...
M51 enhanced with Ha and SII, 





    
        

            Andreas Dietz
M51 enhanced with Ha and SII

M51 enhanced with Ha and SII

Technical card

Resolution: 1026x1062

Dates:March 30, 2017March 31, 2017Feb. 24, 2018

Frames:
B+W 486 UV/IR block: 314x30" ISO1600
Baader Planetarium Ha 36mm 7nm: 496x30" (gain: 270.00) -3C bin 1x1
Baader Planetarium SII 36mm 8nm: 406x30" ISO25600

Integration: 10.1 hours

Avg. Moon age: 5.03 days

Avg. Moon phase: 28.78%

Temperature: -8.00

Astrometry.net job: 1959472

RA center: 202.489 degrees

DEC center: 47.229 degrees

Pixel scale: 1.067 arcsec/pixel

Orientation: 357.685 degrees

Field radius: 0.219 degrees

Locations: Home Observatory, Regensburg, Bavaria, Germany

Data source: Backyard

Description

Last but not least here is another enhancement of my whirlpool image. I've found some experimental SII narrowband data. It was almost empty, but a few central parts were different to the Ha channel, so I decided to make an overlay using a yellow mask.

That's the current color mapping :
R = Red (Bayer CFA) + Halpha + SII
G = Green (Bayer CFA) + SII
B = Blue (Bayer CFA)

Enjoy!

Comments

Author

dakloifarwa
Andreas Dietz
License: Attribution-ShareAlike Creative Commons
1420
Like

Revisions

  • M51 enhanced with Ha and SII, 





    
        

            Andreas Dietz
    Original
  • Final
    M51 enhanced with Ha and SII, 





    
        

            Andreas Dietz
    B

B

cropped to same FOV as in the hydrogen enhanced image

Sky plot

Sky plot

Histogram

M51 enhanced with Ha and SII, 





    
        

            Andreas Dietz