[gregbradley]

Not saying that you're doing anything wrong here, but how are you collimating this thing??

I took a snap in CCD inspector to see what's happening... it is out by a fair bit. Not that CCD inspector is gospel but it has helped me out in the past trouble shoot.
I reckon, get collimation down to perfect, perhaps find a better method to do it. (F6.8 not as critical as F4 but I think for every thing to come together and work well it needs to be spot) use Focus max and things will be better even in LP.

Thanks for that snapshot. I did collimation per the Planewave Instructions which are basically to get a widefield eyepiece, defocus and centre the centre dot. I did that (it was already close) and then they say to check the spacing between the mirrors using a special adapter and a ronchi eyepiece, I did that, then use a high power eyepiece which I did (4mm) and repeat the first step. It seemed fine but I did not check it with CCD Inspector. I think I will buy that program as it has real time
adjustment available.

Seeing is the most likely culprit but collimation may still need work.

Cheers.

Originally Posted by Tom Davis

Up close and personal. I like it!!

Tom

Thanks Tom.

Originally Posted by Peter Ward

Not bad...but I'd echo earlier comments in that it lacks "snap" in the focus area....though I wouldn't discount seeing or local thermal issues.

By the way, my current camera doesn't have an AO...they are still some way off for large format cameras.....sigh....

An AO unit with a 16803 chip would be pretty awesome.

Originally Posted by Ross G

Great photo Greg.

Beautiful colours and a wide, smooth tonal range....at least as important as outright sharpness.


Thanks.


Ross.

Cheers Ross.

Originally Posted by John Hothersall

Still a good image and I prefer results from larger scopes even in poor seeing. I struggle with collimation at Newtonian F4.5 as it has to be perfect as it slews and often changes and big sensors are more revealing of errors.

John.

Thanks John.

Originally Posted by wysiwyg

Nice one Greg!
Looks like you finally have everything working

Cheers.