Simeis - 147 . Or something like that..

Insipired by Rogelio Bernard Andreo's exceptional picture of this huge supernova remnant just a few degrees off Beta Tauri, found here ( http://blog.deepskycolors.com/archive/2011/12/08/simeis-147-and-surroundings.html ) I decided to try to replicate the eat with my dsrl and a modest Borg 77 ED.

Right.

This is the result of 2h and 19 minutes of exposure (14 subs), from a very dark site in West Virginia, under exceptional skies. And some wizardry in Pixinsight, I couldn't see _anything_ on the individual 10 min subs. Nothing. This is a _long_ exposure, with a very good consumer DSLR. Most of my exposures elsewhere on this page are 30 mins total!

5D MK III, ISO 1600, Borg 77 ED II refractor + 0.85x DG-L reducer.

Besides covering only about a quarter of Rogelio's image, the DSRL doesn't hold a candle to a CCD + H alpha filter...

But at least I got something. You can clearly see wispy red filaments and loops permeating the image, and they're for real. Don't believe me? Look at Rogelio's picture :).

For those of you who find all this to be some sort of mambo-jumbo, this is a picture of a very small area on the sky. All the points are stars in our own Galaxy, the Milky Way. The red filamentary stuff is hydrogen gas
pushed around by an ancient supernova explosion.. Same explosion heated the gas and made it glow..

Enjoy!