Home > Uncategorized > The Rosette Nebula in Narrowband

The Rosette Nebula in Narrowband

This is my second narrowband image, and the debut of my new Borg 77EDII.  The best thing about this image is that it was gathered over three nights when the moon was over 85% full.  I could never have done that before moving to narrowband!

It could definitely use more S-II data, but I’m pleased with this first attempt.  I didn’t realize how dim the S-II portions of the Rosette would be, otherwise I would have used more of the total exposure time there.

This image is processed in a modified version of the teal-gold motif that Bob Franke describes on his website (http://bf-astro.com/hubbleP.htm).

The Rosette Nebula in Narrowband

Image data:

Exposures:  28 x 600s Ha, 20 x 600s O-III, 20 x 600s S-II

Software:  guiding by PHD, stacking in DeepSkyStacker, processing in Photoshop CS3

Telescope:  Borg 77EDII w/ f/4.3 reducer

Camera:  SBIG ST-8300M with Baader narrowband filters

Mount:  CGEM

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