[cybereye (Mario)]

Hello everyone!

Well, what a reprocessing adventure this has been!! After advice from Marcus regarding noise reduction and from Ivo Jager regarding my missing yellow stars, I went back and have spent the last couple of nights playing with the 2.75hrs of data I took last Saturday night from my backyard here in Brisbane. Now one of my problems is that the UHC-S filter that I use basically only lets blue and red light through, notching the spectrum for everything else. I've attached what I'd call a power spectrum (seismic processing talk) of the Baader UHC-S filter so that you can see what I mean. This means that it is very hard for me to get any yellow in my images - which is something I've noted, but never understood, when imaging galaxies.

Anyway, here's the repro of the Trifid Nebula. As mentioned in my last post, it's 33 x 5 minute subs using a GSO RC8 and an OSC QHY8L CCD. Hopefully I've got a better result this time, and for the observant ones out there, yes I have rotated the image 90 degrees to better match the orientation of Marcus' superb image.

Any comments on this version would be greatly accepted... Oh, and a big thank you to Marcus and Ivo for their advice that they gave - very helpful indeed!

Cheers,
Mario