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Ngc 1365
Frank, Roger, Ken and David:
Thanks for your comments. Having an observatory really helps to squeeze some imaging by “shooting between the clouds”.
About the image:
I took 6 min and 10 min light frames. Some of the 6 min frames were taken with a light pollution filter just for testing it. The filter reduces somewhat the intensity of the light. I stacked all the 6 min frames together.
Flats: I took flats for the 6 min frames. The 10 min frames have not flats but I am going to take them (I have not moved the camera).
Darks: I am one of the happy owners of a camera that does not need darks. I did not use any bias frames.
The Lumicon Giant OAG has some chromatic aberration. I tried to enhance the colours of the stars while removing some of the aberration. I had some problems with it. I quit after a while and left the image with the processing issues as you all noticed.
The sharpening was part of handling the starts (simple Unsharp mask to all the image). In fact, I had to “blur” it a little after I applied too much of it. I would like to have the big yellow star at the top left fully included in the image.
In summary: the data has a lot more to offer.
The plan:
Get the flats for the 10 min frames.
Get more 10 min frames shooting between the clouds.
Make two stacks for the 6 min frames, one with the pollution filter and one without it.
Make one stack with all 10 min frames.
Use Photoshop HDR to “join” the 3 stacks. Some experimenting has to be done here with the EV values and the framing. I use automatic stacking for HDR.
Remove the chromatic aberration in the stars as much as possible.
Enhance the stars colours.
Apply a sharpening technique that does not create problems with the stars.
Send it to Iceinspace.
It would be interesting to compare the 6 min stacks with the 10 min ones. I would have to process them separately applying the same techniques.
Thanks,
Enrique
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