Thread: Ic434
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Old 03-02-2025, 12:25 PM
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Paul Haese
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Join Date: Jan 2009
Location: Adelaide
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Thanks to everyone for the comments. Much appreciated.

Quote:
Originally Posted by gregbradley View Post
It looks terrific already.

One very minor thing that you may be looking at is the dark void under the Horsehead and to the right of the blue tunnel. There is faint Ha there (see my recent widefield image of it in Ha) that is not being shown. More exposure in Ha should bring that up.

Excellent processing.

Greg.
I noted the same myself as I have done a recent wide field of this same area, I suspect that wider field units are more adept at capturing the fainter gas and nebulosity. It might be a case of diminishing returns to pick up that remaining data though. Food for thought!

Quote:
Originally Posted by Atmos View Post
Excellent detail! My only longer focal length attempt of this region certainly didn’t reveal this much detail. My lowest FWHM over 5 nights was around 2.2 arcsec; not that great.

Very nicely done!
Any long focal length imaging is quite tough. So many things have to be working near perfection to achieve excellent results. Seeing being king of them all. Last couple of nights here in SA we have had northerly winds and the seeing has been very average, well inside the 2's, I usually ditch those nights as too much smearing has occurred. I am sure for some though, this is more the norm and you have to accept what is present.

Quote:
Originally Posted by Peter Ward View Post
It seems not many in OZ are doing narrow field work of late...more the pity....
as this is one of the finer Equine heads I've seen recently.

Not sure about the yellow areas within the blue reflection nebula

An excellent narrow-field rendition regardless.....which makes it stand out from the pack.
Yes noted, the new fashion world wide is wide field imaging. It's more forgiving in general and it captures all the dust and gas easily over the more long focal length systems. We find most of our wide field scopes are rented within hours of advertising.

I am not sure what is going on with that yellow, I have addressed it several times, it is coming close now to being hydrogen colour. It shows up well in the Ha data so it is a puzzle where in the processing this has occurred.

Quote:
Originally Posted by alpal View Post
Great picture of the horsey Paul,
it's very detailed -
it seems that you tamed that OOUK AG12
and ended up with a really top telescope.

cheers
Allan
I have two of these scopes Allan which makes for double trouble. One of them I am using the original Wynne corrector and this one uses a Skywatcher asplenic corrector. The other one is on permanent rental and is the better of the two scopes. Still I am quite happy with the results I can obtain with this particular AG12.

Quote:
Originally Posted by Startrek View Post
Paul,
Really nice work from that 12” and square sensor , some excellent contrast
Significantly more detail and res that my rendition and you’ve tamed the rays area from Alnitak beautifully. Although I was quite pleased with my result from my 10” for only 6 hours of data , definitely not enough signal and conditions were quite unstable too.
Well done indeed !!
Martin
It just goes to show what can be achieved from the bottom end of the bigger scopes. I think seeing was really you enemy there. Your colour palette is very good.

The square sensor can be a bit of a challenge though, but also has its benefits.
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