Hi all,
with some clear skies around the new moon for a change i decided to give my new OIII filter (8.5nm) a bit of a trial run.
unfortunately it was hot both nights and the canon's sensor was reading between 30-39 degs - not ideal (up to 49 after using live view!!). in addition most of my subs were ruined so the result it more noise than a rock concert - it took me a long time to trouble shoot what the issue was.
i don't know why but BYEOS dithering was the problem it would cause PHD to lose the guide star often or move it too far. in all honestly it probably wasn't the programs' fault but my aging laptop that struggles downloading a picture as it is.
so anyway this was never going to be a masterpiece with the heat and laptop problems but trialling the filter and my new CC. the above problems made it harder to blend in the OIII to the RGB image but thanks to marc, hugh and fred for their tips.
i think the blended image has added something to the regular rgb. longer exposures weren't possible with the filter due to the noise from the heat. i need a cooled camera! think i'm going to have to bite the bullet sooner rather than later.
clear and cool skies!
russ
1 thors helmet OIII
2 carina regular rgb
3 carina rgb blended with OiII
4 carina OIII data