Contains:  M 13, Great Cluster in Hercules, NGC 6205
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M13 w/propeller, 




    

        bobzeq25
M13 w/propeller

M13 w/propeller

Technical card

Resolution: 2610x2015

Dates: June 9, 2018

Frames: Astronomik RGB Deep Sky: 112x60" -10C bin 1x1

Integration: 1.9 hours

Flats: ~90

Bias: ~100

Avg. Moon age: 24.79 days

Avg. Moon phase: 23.32%

Bortle Dark-Sky Scale: 7.00

Mean FWHM: 3.00

Temperature: 18.00

Astrometry.net job: 2142879

RA center: 250.358 degrees

DEC center: 36.423 degrees

Pixel scale: 1.002 arcsec/pixel

Orientation: 260.464 degrees

Field radius: 0.459 degrees

Data source: Backyard

Description

Like the fact that I captured the propeller dark lanes, just above and left of center.

R 20X120, G 38X60, B 23X90 (no L).

Comments

Author

bobzeq25
bobzeq25
License: None (All rights reserved)
4611
Like

Revisions

  • M13 w/propeller, 




    

        bobzeq25
    Original
  • M13 w/propeller, 




    

        bobzeq25
    C
  • M13 w/propeller, 




    

        bobzeq25
    F
  • M13 w/propeller, 




    

        bobzeq25
    G
  • Final
    M13 w/propeller, 




    

        bobzeq25
    H

C

A bit better color, more outer stars, and better background.

F

One could play with this data for a long time.

G

Some CN people actually liked C better than F, thought F was too pale. I found C too cartoonish. This is in between.

H

Still fiddling. How black/grey should the background be?

Sky plot

Sky plot

Histogram

M13 w/propeller, 




    

        bobzeq25