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Contains:  The star 16Cep, The star 24Cep
Getting plate-solving status, please wait...
LDN1235 - The Shark Nebula - LRGB, 


            Roberto Botero
LDN1235 - The Shark Nebula - LRGB
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LDN1235 - The Shark Nebula - LRGB

Technical card

Dates:Sept. 2, 2018Sept. 3, 2018Sept. 4, 2018Sept. 7, 2018Sept. 8, 2018Sept. 12, 2018Sept. 13, 2018Sept. 14, 2018Sept. 15, 2018

Astrodon Blue G2E: 31x300" bin 1x1
Astrodon Green G2E: 30x300" bin 1x1
Astrodon Red G2E: 30x300" bin 1x1
Hutech IDAS LPS P2 50mm square: 43x600" bin 1x1

Integration: 14.8 hours

Avg. Moon age: 15.66 days

Avg. Moon phase: 26.24%

Basic astrometry details job: 2255988

RA center: 22h 7' 45"

DEC center: +72° 56' 24"

Pixel scale: 1.429 arcsec/pixel

Orientation: 0.299 degrees

Field radius: 1.115 degrees

Resolution: 3974x3974

Locations: Home, Petts Wood, United Kingdom

Data source: Backyard


Tough subject from suburban skies. Although high in the sky through the night, it sits above the light dome of London so I had to fight plenty of gradients - particularly in the colour channels.
Colour balanced using PxI PCC Photometric routine.
I was glad that STF2893 just behind "the eye" of the shark, which is a colourful double visually, showed well its yellow and green components in the final LRGB frame (for colour description see here:



Roberto Botero
License: None (All rights reserved)


  • LDN1235 - The Shark Nebula - LRGB, 


            Roberto Botero
  • LDN1235 - The Shark Nebula - LRGB, 


            Roberto Botero
  • Final
    LDN1235 - The Shark Nebula - LRGB, 


            Roberto Botero


Description: LRGB

Sky plot

Sky plot


LDN1235 - The Shark Nebula - LRGB, 


            Roberto Botero