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M81 L-Ha/R-G-B and M82 L-Ha/R-G-B composite


MikeD

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Hi all.

I decided to try and put my two recent images of M81 and M82 together with a wider field shot of the star field I took last year.

The diff spikes in the old image don't match up and I would like to take a deeper widefield shot to show the background galaxies better but I could not resist a quick go to see how it's going to look.

I am not sure what the subs ( thaken with my 80ED) for the widefield were but M81 was:

69 x L @ 5 min's

13 x G @ 5 min's

13 x B @ 5 min's

20 x R @ 5 min's

11 x Ha @ 5 min's

And M82 was:

30 x L @ 5 min's

10 x G @ 5 min's

10 x B @ 5 min's

10 x R @ 5 min's

15 x Ha @ 10 mins

The composite was put together in photoshop as layers.

The m81 and 82 shots are 99.7% of full size and the star field is 200% of full size ( double sized in maxim DL)

The image posted is 50% of full size.

The full size image is HERE

Mike.

yfronto-albums-mike-deegan-s-yfronto-s-images-picture4385-m81-m82-comp-13-03-10-small.jpg

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I ran a high pass filter in photoshop on the M81 image (that I had not done in previous postings )before adding it to the composite.

It dose seem to have helped with detail in Holmberg IX.;)

Mike.

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