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Cresent nebula NGC6888

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About this observation
Observer
Kevin G.
Time of observation
06/08/2016 - 23:56
Object
NGC 6888
Observing location
Sheffield
Equipment
Celestron 8SE
Atik 460EX mono
Skywatcher AZ-EQ6-GT
Off axis guider with AVS MkIV video as guide cam.
ASA 0.77 reducer corrector
Exposure
Ha, 3 x 1200; OIII, 3 x 1200s; SII 5 x 600s. All bin 1x1, -17C
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Narrowband image. Data collected over three nights.  HII and OIII rendered as red and blue respectively. SII is a weak signal here, is rendered green, but doesn't contribute a great deal. Subsequent manipulation of hue to bring out contrast between  HII and OIII.

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