[marc4darkskies (Marcus)]

Originally Posted by multiweb

That looks terrific Marcus. Gee, you're a tough customer with the seeing. If you hadn't mentioned it I wouldn't haven't noticed, not that I can see anything soft in your shot.

Cheers Marc! Yes, at 3130mm I need to be fussy about seeing. My normal cutoff is 2.5 arcsec FWHM

Originally Posted by codemonkey

Looking good, Marcus! I expected worse based on your comments on my effort about your seeing being so poor, but you've done very well in teasing that detail out.

The streams have come out very well in yours, must be those longer subs (900s vs 144s).

I think I can spot some ringing artefacts from decon around some stars overlaying the galaxies, but I had to look pretty hard.

Looking forward to seeing the finished product!

Thanks Lee! Artefacts can arise in several different ways if you're not careful. In this case probably masking artefacts since my decon is usually not heavy enough to produce dark rings.

Originally Posted by Atmos

It's probably a combination of my poor eyes, looking at it on an iPhone is harsh light & processing Artefacts

You must be an old codger like me Colin!

Originally Posted by Placidus

Hi, Marcus,

Already looking very fine. The tidal tails have come out very well.

Thought: Can you do a separate version using all the subs, which would give even deeper tidal tails and distant background galaxies. Then register that version with this. Combine using a mask based on blurred regional brightness, so you take the bright detail from your best subs, the tidal tails and deep background from the whole stack, and pro rata in between? I'd love to see the result.

Best,
Mike

Thanks a lot Mike. Yes, I've actually done that. There is a little less noise in the sky and the fainter parts of the Antennae and streams show up marginally better. The rejected subs are really (I mean really) bad though, so no additional detail and very little additional depth (esp with stars and galaxies) is available. It's also quite hard to restrain stellar profiles after layering and masking! Having said all that, if I use my imagination a bit, the field does look a bit richer. I may fiddle with it some more and replace the current version if I can see a definite improvment.

Originally Posted by gregbradley

Looking pretty good there Marcus.

I am surprised you say the seeing has been poor as where I am recently it has been pretty good most nights. I am not that far away but I suppose its far enough away to have local effects.

I agree with Paul. A couple of good nights will sharpen it up. The detail in the galaxies are already pretty sharp so some good nights could make it spectacular.

We have an excellent week of weather forecasts ahead so apart from the Moon setting later and later there is an excellent chance of good seeing coming up.

Greg.

Thanks Greg. You've got a couple of hundred metres on me don't forget - I'm only at 64m. Not going out tonight but the seeing forecast doesn't look great.