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
Getting plate-solving status, please wait...
m57 (ring planetary nebula) HaLsRGB, 


            *philippe Gilberton

m57 (ring planetary nebula) HaLsRGB

Technical card

Dates:July 8, 2018June 2, 2019June 17, 2019June 22, 2019July 11, 2020

11x300" (gain: 139.00) -25C bin 1x1
5400x1" (gain: 300.00) bin 1x1
Astronomik Ha 1.25" 12nm: 60x60" (gain: 139.00) -27C bin 1x1
ZWO LRGB Filter-Set 1.25": 40x60" (gain: 180.00) -20C bin 1x1

Integration: 4.1 hours

Avg. Moon age: 21.64 days

Avg. Moon phase: 53.75%

Bortle Dark-Sky Scale: 4.00

Basic astrometry details job: 2760958

Resolution: 1222x688

Locations: backyard, Gévezé, Bretagne, France

Data source: Backyard


Comparison of benefit of using lucky imaging versus long exposure with the same optical instrument.
long exposure performed with ASI174MM-cooled for RGB channels with C8 + focal reducer
long exposure in Halpha with my new acquisition ASI1600MM-cooled pro with C8 + focal reducer
lucky imaging with my new ASI290MC and C8 (no focal reducer and no guiding)
I did first a L synthetic/Ha + HaRGB (long exposure)
I replaced the L channel with lucky imaging one and added the previous captured Ha
The resolution is amazingly improved. For the purpose of the comparison I cropped the long exposure to fit it with the smaller size sensor of the ASI290MC
Finally I added 1 hour of Halpha captured in July 2020.



*philippe Gilberton
License: None (All rights reserved)


  • m57 (ring planetary nebula) HaLsRGB, 


            *philippe Gilberton
  • m57 (ring planetary nebula) HaLsRGB, 


            *philippe Gilberton
  • Final
    m57 (ring planetary nebula) HaLsRGB, 


            *philippe Gilberton


Description: add the lucky imaging layer to see the full benefit of using it as a synthetic luminance layer


Description: 1 heure Ha added

Sky plot

Sky plot


m57 (ring planetary nebula) HaLsRGB, 


            *philippe Gilberton