NGC2237 Rosette Nebula - Bi Colour #Explored

The Rosette Nebula is a large, circular H II region located near one end of a giant molecular cloud in the Monoceros region of the Milky Way Galaxy. The open cluster NGC 2244 is closely associated with the nebulosity, the stars of the cluster having been formed from the nebula's matter. The cluster and nebula lie at a distance of some 5,200 light-years from Earth and measure roughly 130 light years in diameter. The radiation from the young stars excites the atoms in the nebula, causing them to emit radiation themselves producing the emission nebula we see. (Wikipedia)

 

Image was shortlisted for Insight Astrophotographer of the Year 2016 competition at the Royal Greenwich Observatory in the Stars and Nebula category.

 

First try of new focal externder (x1.6). Used to enhance luminance data for central region.

 

Bi-colour narrowband image: 7/1/16 & 3/2/16

Oxfordshire, UK

4 Hours Total Combined Exposure

5x1800s Ha@f/5, 4x1200s Ha@f/8, 1x600s bin2x2 SII@f/5

 

Equipment:

T: Takahashi FSQ106ED @ f/5, extender-q 1.6x (f/5->f/8)

C: QSI683ws Mono CCD, Astronomik Filters (6nm Ha)

M: Celestron Advanced Vx

G: QHY5-II

 

Acquisition and Processing:

PHD2, Sequence Generator Pro, CCDStack, Photoshop CS6

Done