Contains:  Other
The Crescent Nebula NGC 6888 in OIII, Terry Hancock

The Crescent Nebula NGC 6888 in OIII

The Crescent Nebula NGC 6888 in OIII, Terry Hancock

The Crescent Nebula NGC 6888 in OIII

Description

Finally in the early hours this morning I was able to capture the Crescent again, this time using the 8.5nm Baader OIII filter, as the OIII is very faint on this target I decided to shoot 30 min exposures binned 2x2.

Hoping to add a few more photons to this before I'm done with it

Total Exposure time 4.5 hours

All the Best & Clear Skies

Terry

Down Under Observatory

Image Information

Location: DownUnder Observatory, Fremont MI

Date of Shoot July 22nd 2012

Exposure:

OIII 9 x 30 mins binned 2x2

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 in OIII, Terry Hancock