Ngc4945

[Astroman (Andrew Wall)]

No Flats on this because my camera slipped in the focuser when I went to another object. I didn't realise until it was too late and then the cloud rolled in. Anyway 11 frames @ 4mins each ISO800 with a Canon 400D and 80mm f450mm Refractor. And a close negative crop of NGC4945.

[tilbrook@rbe.ne (Justin Tilbrook)]

Hi Andrew!

Quite good resolution your getting from that focal length.
I presume the green tinge is from an LP filter?

Cheers,

Justin.

[Astroman (Andrew Wall)]

Yeah Sure is Justin, the LP filter puts a bit of a weird colouring on the image which I havent worked out how to process out. Since I lost my copy of Photoshop when my HDD failed, I have been using GIMP so the workflow is a little different.

[tilbrook@rbe.ne (Justin Tilbrook)]

Originally Posted by Astroman

Yeah Sure is Justin, the LP filter puts a bit of a weird colouring on the image which I havent worked out how to process out. Since I lost my copy of Photoshop when my HDD failed, I have been using GIMP so the workflow is a little different.

I've just purchased an LP filter for work in moon light, haven't had a chance to use it yet. I also have a baader fringe killer that gives this green tinge. I've stopped using it, until I can figure out how to process it out properly.

Cheers,

Justin.

[astronobob (Bob)]

Nice details in there Andrew, good round stars also
Was reading up on LPFilters and most will shift the white ballance out with unmodded Dslr's, I see some red tinges around the edges too, was this in the oridginal file as well or does the oridginal have an even green tinge across all it ? ?