Horse Head Ha

wysiwyg (Mark) · #1 14-11-2010, 08:57 PM

Hi Everyone,

Well its been another long spell for me but finally I have something to share again. This was taken on a recent trip to Arkaroola.
Got plenty of data in all the channels but i thought I would start with my favourite.

Horse Head Ha Version 1

Horse Head Ha Version 2

A total of 4.5 Hours of exposures in Ha, comprised of 20,30 and 60 min subs.

Enjoy!

Cheers
Mark

Astroman (Andrew Wall) · #2 14-11-2010, 09:20 PM

Like the first of these Mark, awesome amount of detail WOW 60min subs!
Thanks for sharing.

Octane (Humayun) · #3 14-11-2010, 09:26 PM

Mark,

The first one is the chops. Spectacular detail.

The second one looks like as if it has suffered from excessive unsharp masking or that dreaded HDR look. Or, perhaps just needs some slight contrast adjustment in the mid-tones.

60 minute sub-exposures, phw0ar!!!

H

Exfso (Peter) · #4 14-11-2010, 10:20 PM

Links are dead wysi

wysiwyg (Mark) · #5 14-11-2010, 11:46 PM

Quote:

Originally Posted by Exfso

Links are dead wysi

Just checked them, they work fine!

Sylvain (Jon) · #6 15-11-2010, 12:01 AM

OMG! Unbelievable shots!
I love the first one too!
This is a sick shot!! SO GOOD!

wysiwyg (Mark) · #7 15-11-2010, 12:04 AM

Thanks guys!
No 1 is also my favourite.

Paul Haese · #8 15-11-2010, 01:26 AM

I am getting the links are dead too, invalid web address actually.

Paul Haese · #9 15-11-2010, 01:33 AM

Found the errors. You have two extra forward slashes just after the http: Removing two of them sorts the problem.

wysiwyg (Mark) · #10 15-11-2010, 01:34 AM

Quote:

Originally Posted by Paul Haese

I am getting the links are dead too, invalid web address actually.

Just checked again and no problems for me. Not sure why it's happening. Could be browser related issue.

Mark

Paul Haese · #11 15-11-2010, 01:35 AM

Love the second image, the first one looks over processed to me. The second one has so much detail it is amazing. How do I see a larger image than what is displayed?

wysiwyg (Mark) · #12 15-11-2010, 01:46 AM

Quote:

Originally Posted by Paul Haese

Love the second image, the first one looks over processed to me. The second one has so much detail it is amazing. How do I see a larger image than what is displayed?

Thanks!

Just finished doing that actually. Safari has no problem but windows explorer did not like it.

Just click the "original" link and you will get the full size version.

Cheers
Mark

Paul Haese · #13 15-11-2010, 01:53 AM

Just one small thing really in both images. It looks like you are being a little heavy handed with your noise control or smoothing. More subs would make a huge difference to this I think. However it may well be the compression which is making it look plastic.

Still have excellent potential though.

mill (Martin) · #14 15-11-2010, 09:10 AM

I like the first image the best, both images have loads of detail

I dont know if it is my monitor but i see a black line running from about the middle of the picture near the bottom.

wysiwyg (Mark) · #15 15-11-2010, 11:06 AM

Quote:

Originally Posted by mill

I like the first image the best, both images have loads of detail

I dont know if it is my monitor but i see a black line running from about the middle of the picture near the bottom.

Thanks!

No its not your monitor, its actually a column defect.
I could not get dithering working for some reason hence the column showed up. Otherwise it would have been taken out by the median combine.

Cheers
Mark

wysiwyg (Mark) · #16 15-11-2010, 11:09 AM

Quote:

Originally Posted by Paul Haese

Just one small thing really in both images. It looks like you are being a little heavy handed with your noise control or smoothing. More subs would make a huge difference to this I think. However it may well be the compression which is making it look plastic.

Still have excellent potential though.

I agree, I'm a bit rusty at processing, have not really done any in over 6 months so its work in progress at the moment. I will keep building onto this though over the next month or so. I have another 2 week astro trip coming up so I am hoping to get more subs then.

iceman (Mike) · #17 15-11-2010, 11:22 AM

An amazing amount of detail, Mark! Wow!

Does look quite heavy handed on the processing, but a great comeback shot!

multiweb (Marc) · #18 15-11-2010, 11:27 AM

Great field and a huge amount of data. Top notch scope and top mount so the processing lets the data down IMHO. Clipped and over sharpened but you certainly can see the huge potential of the rig. Looking forward to more.

Omaroo (Chris Malikoff) · #19 15-11-2010, 11:59 AM

Top effort on the first one

Love it! Such grand detail and nice, smooth, continuous tones. Is the dropped column in the original size version occurring in other images?

wysiwyg (Mark) · #20 15-11-2010, 03:03 PM

Quote:

Originally Posted by Omaroo

Top effort on the first one

Love it! Such grand detail and nice, smooth, continuous tones. Is the dropped column in the original size version occurring in other images?

Thanks!

Re: Dropped Column.
Havent got to the bottom of it yet, but I'm hoping to do some investigation. Its quite normal for Class 2 or even Class 1 chips to have these and the best way to eliminate them is through dithering your images which wasnt working for me on the night. So that's the first thing I need to sort out.