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Contains:  Crescent nebula, NGC 6888
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NGC 6888 (Crescent Nebula) HOO narrowband, 


NGC 6888 (Crescent Nebula) HOO narrowband

NGC 6888 (Crescent Nebula) HOO narrowband

Technical card

Resolution: 2364x1831

Dates:July 7, 2017July 11, 2017

Orion Extra Narrowband Filter Ha 1.25": 75x270" -14C bin 2x2
Orion Extra Narrowband Filter OIII 1.25": 22x270" -14C bin 2x2

Integration: 7.3 hours

Avg. Moon age: 15.08 days

Avg. Moon phase: 96.14%

Bortle Dark-Sky Scale: 8.00 job: 1671704

RA center: 303.044 degrees

DEC center: 38.351 degrees

Pixel scale: 0.961 arcsec/pixel

Orientation: -116.056 degrees

Field radius: 0.399 degrees

Locations: Back Yard, Lubbock, TX, United States


This is a four-panel mosaic image of NGC 6888, the Crescent Nebula, in HOO narrowband color. Most of the subs were acquired from the city during a period when the moon was nearly full, so the image isn't as deep as it could be. The blue halo from the OIII filter did not show up at all, in fact. However, the seeing was quite good, so the details are rather sharp.

One of these days, I am going to get some good imaging weather without the full moon, and I'll do something besides urban back yard narrowband imaging!



License: None (All rights reserved)

Sky plot

Sky plot


NGC 6888 (Crescent Nebula) HOO narrowband,