Jump to content


Photo

IC1396 - tough target

  • Please log in to reply
19 replies to this topic

#1 raf1

raf1

    Viking 1

  • *****
  • Posts: 936
  • Joined: 18 Nov 2005
  • Loc: south Texas

Posted 16 September 2013 - 11:58 AM

Weather and the Moon have conspired to terminate data capture on the Elephant Trunk. Processed what I have, but will have to finish at a later date.

IC1396 - Elephant Trunk

As always, comments and suggestions are appreciated.

CS, Ron

#2 zoran

zoran

    Viking 1

  • -----
  • Posts: 643
  • Joined: 09 Jun 2006
  • Loc: Zagreb, Croatia

Posted 17 September 2013 - 01:58 AM

It looks like a very good start to me!
It is sharp, detailed and well guided. Some noise is present in darker areas, but an image can always benefit from more exposure time :)
Regards,
Zoran

#3 Leonardo70

Leonardo70

    Apollo

  • -----
  • Posts: 1193
  • Joined: 16 Apr 2009
  • Loc: Turin - Italy

Posted 17 September 2013 - 02:01 AM

Very nice Ron... great resolution !!!
Low and mid lights could be raised for better view ...

All the best,
Leo

#4 raf1

raf1

    Viking 1

  • *****
  • Posts: 936
  • Joined: 18 Nov 2005
  • Loc: south Texas

Posted 17 September 2013 - 11:48 AM

Thank y'all both kindly for taking the time to comment and the encouraging remarks. I took your advice and believe the attached updated image is an improvement.

Zoran, I did work on the noise some at the expense of detail but until I get more data, this is about as far as I can push it. I believe it is a reasonable improvement all things considered.

Leo - you were right that the low and mids needed to be raised. I did that and the image looks better but I may have over lightened it.

Updated Image

Thanks again for taking the time to suggest some much needed improvements.

CS, Ron

#5 blueman

blueman

    Photon Catcher

  • *****
  • Posts: 5372
  • Joined: 20 Jul 2007
  • Loc: California

Posted 17 September 2013 - 01:36 PM

HI Ron,
Looks nice! Just don't push too hard, it only bloats stars though it does bring out faint stuff. More data is better than pushed data. Just a helpful comment."^)
Blueman

#6 raf1

raf1

    Viking 1

  • *****
  • Posts: 936
  • Joined: 18 Nov 2005
  • Loc: south Texas

Posted 17 September 2013 - 02:19 PM

Hey Floyd - thanks for checking in. I agree that pushing inadequate data is a "no-no". I ran the image through 'Reduce Star Size' in Annie's Astro Actions. I thought that worked well. The "Updated Image" above reflects the change, subtle as it is. If you compare it to the original image I posted, the difference is striking. Thanks again to all for the suggestions - with that, I feel like the image is about as good as it's going to get for now.

CS, Ron

P.S. - I highly recommend Annie's Actions. I used them a lot processing this image and I believe it allowed me to maximize results.

#7 WhistleStop

WhistleStop

    Apollo

  • *****
  • Posts: 1278
  • Joined: 07 Sep 2007
  • Loc: Grafton, Ontario

Posted 17 September 2013 - 03:01 PM


Excellent job...the high res shows nice round stars. Bright stars might be a little over saturated and therefore won't hold color. When stretching in curves you might lock the white point off before the peak so the curve doesn't push it to saturation.
An image to be proud of.
"Some trunk...some elephant" - to paraphrase Winston.
Cheers
Lynn

#8 blueman

blueman

    Photon Catcher

  • *****
  • Posts: 5372
  • Joined: 20 Jul 2007
  • Loc: California

Posted 17 September 2013 - 04:34 PM

Hi,
Yeah, the image is fine and I certainly am not knocking the result. I know that most understand the repercussions of pushing data, but if you are lacking data there is little choice if you wish to work with it.

Another time you can double the data and then it will really pop!

I use some of Annie's actions at times, including "Reduce Stars Whole Image" but for star bloat control I use "Star Bloat Removal" a free action you can look up. It is more controllable and used with a layer, which it creates, you can really adjust the results.

But I try not to need this of course. But there are times when the stars just puff up. :)
Blueman

Hey Floyd - thanks for checking in. I agree that pushing inadequate data is a "no-no". I ran the image through 'Reduce Star Size' in Annie's Astro Actions. I thought that worked well. The "Updated Image" above reflects the change, subtle as it is. If you compare it to the original image I posted, the difference is striking. Thanks again to all for the suggestions - with that, I feel like the image is about as good as it's going to get for now.

CS, Ron

P.S. - I highly recommend Annie's Actions. I used them a lot processing this image and I believe it allowed me to maximize results.



#9 raf1

raf1

    Viking 1

  • *****
  • Posts: 936
  • Joined: 18 Nov 2005
  • Loc: south Texas

Posted 17 September 2013 - 10:36 PM

When stretching in curves you might lock the white point off before the peak so the curve doesn't push it to saturation.


That's a good tip Lynn - I'll use it next time out.

Thanks, Ron

#10 raf1

raf1

    Viking 1

  • *****
  • Posts: 936
  • Joined: 18 Nov 2005
  • Loc: south Texas

Posted 17 September 2013 - 10:40 PM

.....and I certainly am not knocking the result....


Hey Floyd - no worries, I know you're not being critical. But you do offer some good advice and I appreciate it.

Ron

#11 Bill W.

Bill W.

    Vanguard

  • *****
  • Posts: 2434
  • Joined: 09 Oct 2005
  • Loc: Western PA, USA

Posted 18 September 2013 - 10:12 AM

Looks great Ron! Nice tight stars and the color looks good! IC1396 is definitely a tough target. What kind of equipment are you using? Scope, camera, etc. Did you use a HA filter?

-Bill

#12 SL63 AMG

SL63 AMG

    Viking 1

  • *****
  • Posts: 864
  • Joined: 21 Dec 2009
  • Loc: Williamson, Arizona

Posted 18 September 2013 - 01:31 PM

Very nice. I like it.

#13 raf1

raf1

    Viking 1

  • *****
  • Posts: 936
  • Joined: 18 Nov 2005
  • Loc: south Texas

Posted 18 September 2013 - 03:42 PM

What kind of equipment are you using? Scope, camera, etc. Did you use a HA filter?


Thanks Bill.

Here's the setup:
Deep Sky Instruments RC14C
AP-1200 Mount
Optec 3” Pyxis Rotator
SBIG STL-11000 Camera with STL-FW8 Filter Wheel
Astrodon Gen2 Filters
SBIG AO-L
Astrodon MOAG with SBIG Remote Guide Head

The image consisted of 3 hr Lum; 2 hr Red; 1.5 hr Green; 2 hr Blue. All subs were 13 minutes and unbinned. No Ha. As you can see, probably a little light on total exposure time for this target.

Thanks again for looking. Ron

#14 raf1

raf1

    Viking 1

  • *****
  • Posts: 936
  • Joined: 18 Nov 2005
  • Loc: south Texas

Posted 18 September 2013 - 03:47 PM

Thanks, Dave. You have some beautiful work in your Astrobin gallery.

CS, Ron

#15 totolesbaloches

totolesbaloches

    Ranger 4

  • -----
  • Posts: 325
  • Joined: 22 Aug 2008
  • Loc: France

Posted 19 September 2013 - 05:03 PM

Very nice , high resolution

#16 raf1

raf1

    Viking 1

  • *****
  • Posts: 936
  • Joined: 18 Nov 2005
  • Loc: south Texas

Posted 19 September 2013 - 09:29 PM

Thank you Laurent. You have some wonderful images on your website. Very nice.

Ron

#17 ollypenrice

ollypenrice

    Mariner 2

  • -----
  • Posts: 207
  • Joined: 10 Mar 2009
  • Loc: South east France

Posted 20 September 2013 - 02:46 AM

The best I've ever seen. I love the way you've kept the contrast between the rim of the front and the wider Ha region. So often a less discriminating stretch flattens the dramatic glow of the rim. You've also kept the natural colour.
This is very much what I was aiming for in my own attempt but yours is far finer.

Olly

#18 raf1

raf1

    Viking 1

  • *****
  • Posts: 936
  • Joined: 18 Nov 2005
  • Loc: south Texas

Posted 21 September 2013 - 09:17 AM

Hi Olly - thanks for the kind words. Overall I'm happy with the image and may eventually add more data. I looked at your SmugMug gallery and your images are beautiful. And SunStarFrance looks like a bit of heaven right here on our little blue marble.

CS, Ron

#19 Salvopa

Salvopa

    Vostok 1

  • -----
  • Posts: 109
  • Joined: 20 Sep 2013
  • Loc: Palermo - Sicily/Italy

Posted 21 September 2013 - 10:05 AM

Really nice Raf
fantastic job! :)

#20 raf1

raf1

    Viking 1

  • *****
  • Posts: 936
  • Joined: 18 Nov 2005
  • Loc: south Texas

Posted 21 September 2013 - 08:45 PM

Thanks Salvopa - you have some fine images in your Astrobin. I really like your narrowband work.

Ron






Cloudy Nights LLC
Cloudy Nights Sponsor: Astronomics