Eta Carinae Nebula

baileys2611 (Simon Bailey) · #1 19-04-2013, 09:10 AM

My first post of a shot I took last night before the clouds chased me away.

Some work to be done on it, focus is not spot-on (need a mask for that) and I don't entirely understand post stacked processing yet so this could be a lot better because when I fiddled in MaximDL last night with filters and processing I got so many variants I picked the first group and went to bed

Equipment:

William Optics GT-81 triplet (Fsomething because I used a focal reducer and forget now what that takes it down to) on Paramount MX mount
OSSAG
QHY8
10 minute guided stub and 3 * 5 minute un-guided, no dark frames or flats applied.
Average stack in MaximDL
Processed on an iPad (!) using Photoshop CS.

Cheers,
Simon.

Larryp (Laurie) · #2 19-04-2013, 11:43 AM

Nice image, Simon

baileys2611 (Simon Bailey) · #3 19-04-2013, 04:29 PM

Thanks Larry

I'm wondering if 20 minute exposures might be better, also still getting my head around the difference between LRGB exposures and one-shots. LRGBs seem to give far better outcomes but I don't know that those are possible on the QHY8...some research needed I think.

baileys2611 (Simon Bailey) · #4 20-04-2013, 02:36 PM

Here's two examples of post processing. Not sure if this is over-processed because the signal to noise seems to have increased!