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Old 12-11-2014, 09:14 PM
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pluto (Hugh)
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Join Date: Dec 2011
Location: Sydney
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NGC253 HaLRGB from BSG2014 - and a question about orientation

Here's my first image from Border Star Gaze 2014, The Sculptor Galaxy.
I also got a few hours of Ha from Sydney.

I'm getting happier with processing LRGB images in PI and I think the colours are looking ok in this one though the star cores are a little hard and it's a bit noisy.
Any advice for improving would be most welcome

L = 13 x 10min
R = 10 x 5min bin2x2
G = 10 x 5min bin2x2
B = 10 x 5min bin2x2
Ha = 6 x 30min

Bigger/better version here:
https://hughsblog.wordpress.com/2014...ulptor-galaxy/

I also have a question about orientation. I've left this the way I shot it, which is the same way I shoot pretty much everything - I mount my camera so that when the scope is pointing at the SCP the camera is square (long edge of sensor parallel to the ground). However the orientation is different to what a lot of other people have and looking at it in Stellarium using the EQ mount option it looks like it's offset 90 degrees clockwise from mine.

What is considered the 'correct' orientation for DSOs? and how does one work this out?
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