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Old 20-05-2020, 05:45 PM
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Atmos (Colin)
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Join Date: Aug 2011
Location: Melbourne
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NGC 6188; first light

Well this has been getting a pretty good hammering recently so I thought I'd throw mine out there too!
Recently bought a QHY183M to get back into narrowband imaging and I've long wanted to photograph this nebula so I figured it would be a good opportunity as it hits meridian around the middle of the night.

I've tried this in the past but when I was using my refractor the camera would hit the tripod for few hours on either side of meridian so I've always avoided it

It also seemed like a good chance to test out the DDM60 with longer unguided exposures so I've set out at 900s at 0.825"/pixel and not been disappointed. I don't have enough back focus with the RH200 to easily add in an OAG or anything.

My biggest trouble processing wise has been trying to decide on a colour balance. The First Version is technically accurate but it isn't one that I find quite as pleasing.

The Second Version I may have gone a little over board with the sharpening but I do find the colour balance a little nicer visually.

The nebulosity is a straight HOO but I've added in nicer stars which have a 50% contribution of Ha and OIII in the green channel.
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