B33 / Horse head and Medusa Nebulae with 8″ Newtonian in H-Alpha

Location: San Bruno, CA

Telescope: Orion Astrograph 8″  on Takahashi NJP-Z Mount

Camera: Qhy9 CCD with Astronomik H-Alpha 12nm Filter

Another series of H-Alpha images this time with the 8″ Orion Newtonian Astrograph.

Once the telescope is well collimated, it produces good images along with the Baader MPCC coma reducer.

The B33 / Horsehead image is  a composite of 14 exposures of 390 seconds, processed with Maxim DL v5 and Photoshop CS4.

B33 / Horsehead on 2/10/2011 with 8″ Newtonian telescope

The next picture is the more challenging Medusa nebula (planetary nebula).

This nebula was discovered in 1955. It has a very low surface brightness.

The technology to record Hydrogen Alpha images became after World War II (source: galaxymap.org).

I assume this combined with the very low brightness of this nebula is one of the reason why it was discovered relatively recently.

By comparison, it is quite easy to see the shape of the Nebula with one sub-exposure of 6min done with my 8″ telescope in 390sec amidst the City light!

The image is a composite of 15 exposures of 390sec, combined with Maxim DL 5 and processed with Photoshop CS4.

Sharpless 2-274 / Medusa Nebula on 2/9/2011  with 8″ Newtonian

  1. Leave a comment

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )

Connecting to %s

%d bloggers like this: