Quote:
Originally Posted by strongmanmike
Well Marcus ju Karkus that's pretty dam nice mate!
Good to see you leaving some colour noise in the image too  ..mind you, some of that other "noise" looks to be actual stellar resolution, cool!
NGC 55 is a very interesting galaxy when imaged well, like you have here.
Your image does look slightly clipped though..? I am sure there is more outside the galaxy to see, any chance you could try bringing some of that up? (no ya don't have to add a slight blue cast...if you don't want to  )
How are you extending the FL of your Tak? I've always wanted to do that with my AP but never got around to it. I think the NJP, in good conditions, would have good enough tracking without the need for the AOL..? That AOL looks to be working well though, how would you rate it as a device in general..?
Nice job and an enjoyable view 
Mike |
Hey Mike - thanks mate! Yep, there was no escaping SOME colour noise here
. Oh well, I'm in excellent company!
I was careful not to clip but the histogram is pretty steep at the dark end ... I like my sky
dark 
. I tried getting some more of the halo, but it looked too forced & noisy ... and I'd hate to be critisized for over processing!
I use the TOA extender 1.6. It yields a vignetted field so you've got to have some flats on hand. It's a reasonably flat field too - but not perfect. I like my setup - being able to go from F5.5 to 7.3 and 11.7 give me lots of choices when framing a target. Although, I'm sure some would argue (rightly?) that imaging at 1.03 arcsec / pixel with 2-3 arsec seeing is a bit of a waste of time ... but it makes me feel good
Besides, you never know when the seeing is going to crisp up!
I always use the AOL at F11.7 now. To be honest, I can't say for sure whether it's better that native mount guiding - I haven't tested it - but it looks like it's better. The difference is likely to be small given the EM-400 tracks so well. The corrections performed are of course very fast - and that's got to be good. The guide rate on a guide star of mag 8 - 8.5 is 2-3hz or so for Lum (when the seeing is good). It'll do 5hz for brighter stars. The fastest it can correct is around 8hz I think.
Quote:
Originally Posted by AlexN
Very nice and detailed mate.
Well done.
|
Thanks Alex
Quote:
Originally Posted by Peter Ward
Marcus,
Really great stuff!
I have nothing meaningful to add, other than keep doing what you're doing.
Again...well done! |
Thanks a lot Peter - much appreciated!