Horse Head Ha

[wysiwyg (Mark)]

Thanks for all your feedback guys!

I will do something about the overcooked look soon, some grain actually makes the image look more natural rather than plastic.

Cheers
Mark

[gregbradley]

Nice image. Perhaps oversmoothed but you got some fabulous structure there.

The column is a hot pixel that drags down the image during the readout process. There is a note about this on the Sbig site. These artifacts reduce with higher cooling. Although unless you can get to about -35C you'll have to deal with them.

Healing tool in Photoshop handles it.

There are also some black specks in the image. I often get these in Ha shots. Not with every setup. A bit elusive. I have been told it is mismatched darks and lights. Not sure that is true but they seem to enter somewhere in the processing. Its like a hot pixel or a cosmic ray hit that does not dark subtract out.

Anyone know for sure where they come from?

Greg.

[wysiwyg (Mark)]

Originally Posted by gregbradley

Nice image. Perhaps oversmoothed but you got some fabulous structure there.

There are also some black specks in the image. I often get these in Ha shots. Not with every setup. A bit elusive. I have been told it is mismatched darks and lights. Not sure that is true but they seem to enter somewhere in the processing. Its like a hot pixel or a cosmic ray hit that does not dark subtract out.

Anyone know for sure where they come from?

Greg.

Thanks Greg,

I'm glad someone else noticed those. They appear quite erratically and not in the same place when doing a blink between images. So I dont think they are hot/cold pixels.
I used an old dark libarary at first which I thought was the problem, but even having used fresh darks I still get them.
They also appear in Luminance subs as well.....

[Exfso (Peter)]

Ok now wysi, lovely stuff mate.

[Hagar (Doug)]

Very very very nice Mark, big exposures has paid a dividend in this image. I tend to like the first image, it looks a little more natural than no.2 which looks like mine, a little to sharp.

Great stuff.

[wysiwyg (Mark)]

Thanks again for everyones comments!

Based on them this is what I have come up with.
This time no sharpening at all and no noise reduction. I think it has a more pleasant look, more natural and less plastic.

I'm happy with the outcome.

Horse Head Nebula Version 3.0

Thanks for looking!

Cheers
Mark

[iceman (Mike)]

Originally Posted by wysiwyg

Thanks again for everyones comments!

Based on them this is what I have come up with.
This time no sharpening at all and no noise reduction. I think it has a more pleasant look, more natural and less plastic.

I'm happy with the outcome.

Horse Head Nebula Version 3.0

Thanks for looking!

Cheers
Mark

Now you're talking!

[iceman (Mike)]

This is now IOTW.

[multiweb (Marc)]

Much better. Congrats on IOTW.

[wysiwyg (Mark)]

Originally Posted by iceman

This is now IOTW.

Thanks Mike, really appreciate it

[strongmanmike (Michael)]

What a great shot, detailed and quite deep, good improvement on the original too. Nice to see B&W images being displayed as IOTW too...brings back so many memories for some of us

Mike

[TrevorW]

Yes the final repro does it for me too

[Ric]

Great work Mark and congrats on the image of the week.

cheers

[wysiwyg (Mark)]

Thanks Guys!

[Jen]

image of the week great stuff Mark
Gorgeous pic
I have been seeing a lot of Ha pics around lately and they are stunning
Keep up the great work cheers

[h0ughy (David)]

great depth- well done

[Octane (Humayun)]

Mark,

Bang on the money; the horse itself could do with a bit of sharpening. Otherwise, congratulations on a worthy IOTW.

H

[ballaratdragons (Ken)]

Geez Wizzy, did you leave any Data up there for the rest of us!
Looks like your camera has sucked it all up

Top stuff mate. Absolutely stunning

[wysiwyg (Mark)]

Thanks Jen, David, Humayun and Ken

[atalas]

Beautiful!there's just no matching the contrast of Ha.