Quote:
Originally Posted by Andy01
Nice one Marco, I don't photograph as many galaxies as I'd like to, but when I photographed this one I gave it 30+hrs because it's so dim!
The extra Ha you added really makes those tiny nebulae pop 
Nice to explore all those little feint fuzzies in the background too 
Cheers
Andy |
Thanks Andy!
Quote:
Originally Posted by strongmanmike
Lovely field and excellent colour Marco, the HII regions really stand out It's a lovely image but the stars look just a tad bloated and soft  looks great panned out but the close up version is where it looks like this. Was this an atmospheric effect or is this just a by product of the optical design?...or am I imagining things 
Mike |
Hi Mike, there are still some optimization I have to do, including some further tweaking of the plane perpendicularity and probably add an Atlas focuser to the imaging train (I suspect moving the secondary as I am doing is not precise enough with the critical f/ratio of the scope). However I am also struggling with the seeing in Coona, at least in my location. When I analyze my subframes for this luminance I got FWHM between 2.6" and 4.6", depending on the night. The former tenant of my dome using his TEC180 had the same issue with his scope and I also experienced mediocre seeing in the past using the TEC140 (but with the latter I was imaging with almost half of the current sampling so this wasn't a big issue).
Usually in winter I experience better seeing, for the past few weeks it was quite so-so. Than of course processing could also worsening it a bit..
If you want to give it a try I would be happy to share my luminance stack, as I said with my NGC253 post I got quite rusty on image processing..
Cheers
Marco