Simeis 147 - Sh2-240

[don4l]

This is Semeis 147, or Sharpless 240.  It is a huge supernova remnant in Auriga.  This view is 4 degrees by almost 3.

I started this back in November when there was going to be plenty of time to get tons of data.  By the end of February, I was grabbing anything that I could get binned 2 x 2.

Equipment: FSQ106ED with focal reducer,   STL6303e,   EQ6 Pro

Software:  CCDSoft, CCDStack and The Gimp

Exposure:

370 min Ha, mostly binned 1 x 1

415 min OIII, mostly 2 x 2

[cough]...

3 min Green

5 min Blue

I've also got a similar amount of data on the bottom half, but I don't think that I have a hope in hell of getting the two halves to match.  I would also like to get any comments or advice before carrying on.

The OIII on this is incredibly weak.  Processing it was way beyond me, and I still feel that it could be used to much better advantage. 

 

 

[coatesg]

Think this looks like a great start - if you can get the two panes to match, it's going to be a great result!

[Allinthehead]

Fantastic image of a very difficult target