Lagoon and NGC6188

[rmuhlack (Richard)]

I was very excited when I recently received delivery of my new Catseye gear. Collimated the imaging newtonian and took it out for a spin, only to discover that i had over tightened the mirror clips - triangle astigmatism central ! (see first attached pic)

Well I fixed that as soon as I could, and have had a chance to snap a couple of new shots, including these two of NGC6188 and also the Lagoon Nebula.

NGC6188 is 24 x 8min subs, while M8 is 32 x 4min subs - both at ISO800 with the modded 400D and 200mm f4 reflector.

Am particularly interested in feedback re colour balance. This is basically how it fell out of Pixinsight, however they don't appear as 'pink' as other renditions i've seen - in fact even my own previous M8/M20 widefield was more pink than this. So any advice on what to change appreciated

Hi res pics here:
NGC6188 - http://www.astrobin.com/full/15494/B/
M8 - http://www.astrobin.com/full/15355/B/

[rmuhlack (Richard)]

talking to myself again.

perhaps this is more the way i should be aiming (although this looks seriously pink on my monitor) for M8? A similar colour balance for NGC6188 too? Or too fairy floss?

come on - someone throw me a bone here already!

[rmuhlack (Richard)]

for what its worth, hi res version of that repro here: http://www.astrobin.com/full/15355/C/

[RickS (Rick)]

Richard,

I'm no expert on getting colour right, unfortunately, but that looks a bit too red to me. Attached is a crop of M8 from an image I calibrated with eXcalibrator so I hope it's fairly close.

Are you using a calibrated monitor? If not, you'll never know what your image should look like. Another trap is that a lot of programs, including some browsers, aren't colour managed. The best approach to deal with this is to make sure your final images are based on the sRGB colour space. In PI you can do that with ICCProfileTransformation - set the target profile to sRGB IEC61966-2.1.

Cheers,
Rick.

[atalas]

Hey Richard,you can stop talking to yourself now!nice shots on all! I love the pink in nebs so might be a bias opinion on my part.....don't use PI so can't help with that.

[Ross G]

Nice shots Richard.

I love deep, saturated colours.

Ross.