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The Crescent Nebula NGC 6888 Bi-Color, Terry Hancock

The Crescent Nebula NGC 6888 Bi-Color

The Crescent Nebula NGC 6888 Bi-Color, Terry Hancock

The Crescent Nebula NGC 6888 Bi-Color

Description

Using only the narrow band filters H-Alpha for red and OIII for both the green and blue channels I created this false color hybrid. For the first time in a while I binned 2x2 but only the OIII which even at 30 mins exposure is still very faint, impossible for me to do this one un binned at my location.

Total Exposure time 18 hours

All the Best & Clear Skies

Terry

Down Under Observatory

Image Information

Location: DownUnder Observatory, Fremont MI

Date of Shoot 22nd, 23rd, 25th July 2012

Exposure:

OIII 28 x 30 mins binned 2x2

HA 8 x 30 mins unbinned

Camera: QHY9M monochrome CCD, cooled to -30C www.astrofactors.com

StarlightXpress Color Filter Wheel

Scope: Astronomy Technologies Astro-Tech 12" f/8 Ritchey-Chrétien astrograph

Autoguided using StarlightXpress Lodestar autoguider, StarlightXpress Ultra Slim Off Axis guider

Paramount GT-1100S German Equatorial Mount (with MKS 4000)

Image Aquisition software Maxim DL5

Stacking software CCDStack

Comments

Histogram

The Crescent Nebula NGC 6888 Bi-Color, Terry Hancock