M13 - 22nd May 2011

[Carole]

This is the first of 3 images I took last night.  After 1 1/2 hours the object was too high for the POD dome, so had to stop.  I will try to get some more subs as some point as the background noise still needs some work.
I have always struggled to get star colour, but have managed to pull some out on this.

18 x 5mins 800ISO + darks flats and Bias
ED120 Pro, guided QHY5 & PHD
Modified Canon EOS 450D + CLS filter
DSS and PS CS3

[The Thing]

Very nice Carole.

[RobertM]

I like that Carole, nice resolution but the colours look a bit off to me - could it be the CLS filter has shifted the colour balance? 

Robert

[Mac]

Nice capture.

Mac.

[Carole]

nice resolution but the colours look a bit off to me - could it be the CLS filter has shifted the colour balance?  

Don't know Robert, as I said above, normally I don't get any colour with stars, all I did was increase the saturation a bit.  Seeing as I never normally get colour I've got no experience in this.  
Any tips on how to get star colour would be appreciated.

I tried Noel Actions (increase star colour) but that didn't look nice at all, most of the outer core became blue with a burnt centre, so I abandoned that.

Carole

[MarkS]

The image does need a bit of colour rebalancing I think.  You've captured the stars nicely without burning out the core - so you have all the data available.  The stars look nice and round.

It's interesting to compare this to Duncan's version - again using a Canon with CLS filter:
http://forum.orpington-astronomy.org.uk/index.php?topic=7532.0

Mark