Horsehead Ha 300mm (7 hours)

[dugnsuz]

Hello all,
Added more data to my original Horsehead Ha image...
http://www.iceinspace.com.au/forum/showthread.php?t=54664

Added another 3hrs worth of data to the original 4hr image.
The total of 7hrs has brought out some extra detail in the "curtain" and smoothed things out too - posted the before (left) and after (right) low res images below for comparison.

Hi Res...
http://s327.photobucket.com/albums/k461/doug-robertson/?action=view&current=12b.jpg

Cheers
Doug:thumbsup:

[Hagar]

Very nice Doug. You must be getting to the point of diminished returns. The image has certainly added to the detail with this extra 3hrs of data and I wonder how much more you could expect from another 3 hrs if any.
I love the field of view you are able to attain with this setup.

[toryglen-boy]

Lovely shot mate, the added data makes a definite difference

:)

[dugnsuz]

Thanks Duncan and Doug.
And Doug agree re the law of diminishing returns! Getting the extra data was kinda enforced to a degree - my neighbour has gone on holiday and left one of his backyard halogen lights on by mistake, ensuring that Ha or OIII are the only images I can safely take! No RGBs till his return!!
Cheers
Doug:thumbsup::thumbsup:

[CoolhandJo]

Nice work. Yep makes a differnce alright!

[AlexN]

Very nice.. I think its done wonders for the curtains depth and intensity.. it looks like the black point is a little elevated compared to the earlier shot though.. I don't think you'd gain too much by adding more data unless you went and added another 7~14 hours, and even then, the difference to effort ratio would be unimpressive. I definitely think it was worth your effort going from 4 to 7 hours though.

[RB]

Agreed, a good improvement Doug.
Maybe try and brighten it a little as you've lost some faint deatil in the out flame region.

[mill]

The added data has improved it a fair bit.
I see when i do some image flicking that you made the picture darker and lost a bit of nebulosity in the outer region.

Andrew was a bit faster than me :)

[telecasterguru]

Very interesting the difference that the extra data has made.

Frank

[Tilt]

7hrs, champion effort! Definitely worth adding the extra data Doug, smoothed it out and increased the 'depth'.

Michael

[TrevorW]

Champion effort Dougie 7hrs your've got more patience than me gungerdin

[Tamtarn]

The extra data has certainly increased the detail Doug and as you pointed out definitely a smoother image overall. This is a fantastic image and you've been well rewarded for your 7 hr effort :thumbsup::thumbsup:

Have to agree with Andrew and Martin though the outer region detail seems to have diminished a bit in the second one.

Look forward to you posting the image with the added RGB you can grab when the neighbour returns home :)

D & B

[gbeal]

Great shot Doug, lovely. Makes it all worth while huh? I reckon leave it B&W, forget the RGB.
Gary

[dugnsuz]

Thanks all - excuses, excuses but it seems that the tiff - jpeg image compression helps in the loss of that fine wispy detail on the periphery of nebulae. It's there in the high res tiff but disappears on the jpegs honest!!:whistle:

Anyhoo, here's a repro...
http://s327.photobucket.com/albums/k461/doug-robertson/?action=view&current=12c.jpg

Doug