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Contains:  Crescent nebula, NGC 6888
Getting plate-solving status, please wait...
NGC-6888 Crescent nebula  HOO+RGB Stars, 


            Iñigo Gamarra
NGC-6888 Crescent nebula  HOO+RGB Stars
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NGC-6888 Crescent nebula HOO+RGB Stars

Technical card

Resolution: 2456x1920


Baader LRGB: 92x60" bin 1x1
ZWO H-alpha 36mm ZWO H-alpha en 7 nm: 120x300" bin 1x1
ZWO OIII 36mm ZWO Olll 7nm: 105x300" bin 1x1

Integration: 20.3 hours

Darks: 0

Flats: 0

Flat darks: 0

Bias: 0

Bortle Dark-Sky Scale: 7.00

Basic astrometry details job: 3241210

RA center: 20h 12' 15"

DEC center: +38° 21' 36"

Pixel scale: 1.181 arcsec/pixel

Orientation: 93.416 degrees

Field radius: 0.511 degrees

Locations: Observatorio particular, La nucia, Alicante, Spain

Data source: Backyard


Hello everyone, last weekend a storm swept the area and the deck of my observatory leaving my equipment outdoors in one of the worst storms in more than 100 years, I thought it was a good time to review some interesting old data, In this case the growing nebula, from which I captured a lot of data including RGB and I could not use it because I did not know how to perform the process correctly and the blue ones (OIII) gave me many problems.
This time I have made new stacks, practically the same in Ha (10h), however I have reduced the OIII time from 11h 40min to 8h 45min and selected the best sub. In addition and included my RGB data and I performed a luminance with Ha + OIII. The image seems to me much better in general although I have lost a little bit of detail in the oxygen with respect to the previous image (, you cannot have everything. ..
For a season I will dedicate myself to rebuild the obsevatory.
Greetings to all and see you soon, I hope ....



Iñigo Gamarra
License: None (All rights reserved)


  • NGC-6888 Crescent nebula  HOO+RGB Stars, 


            Iñigo Gamarra
  • NGC-6888 Crescent nebula  HOO+RGB Stars, 


            Iñigo Gamarra
  • Final
    NGC-6888 Crescent nebula  HOO+RGB Stars, 


            Iñigo Gamarra

Sky plot

Sky plot


NGC-6888 Crescent nebula  HOO+RGB Stars, 


            Iñigo Gamarra