Free Shipping on ALL Products
camera reviewsbest cameraslens reviewsphotography tipscamera forumvideo toursphotography bookssupport me
It is currently Sun Oct 26, 2014 2:53 am

All times are UTC




Post new topic Reply to topic  [ 4 posts ] 
Author Message
PostPosted: Tue Sep 11, 2012 1:34 pm 
Offline
Moderator
User avatar

Joined: Sat Sep 30, 2006 4:30 pm
Posts: 9824
Location: UK
Hi folks,

This is a first attempt at processing some subs captured last week of the Heart Nebula (clickable for a full sized 4096 x 4096 pixel version):

    Image

    The Heart Nebula - IC1805

For the technically minded this was produced from 8 x 1500 second Hα subs and 5 x 200 second subs in each of red, green and blue, all taken through my TEC 140 'scope with an ML16803 camera.

This image is causing me grief. When I process the Hα data there is a lot of detail at widely different intensity levels and trying to blend the various intermediate images to produce a pleasing result which conveys as much detail as possible is proving difficult. :evil:

Sometimes stars just get in the way...

    Image

Bob.

_________________
Olympus OM-D E-M1 + M.Zuiko Digital ED 12-40mm f/2.8, Lumix 7-14mm f/4, Leica DG Summilux 15mm f/1.7 ASPH, M.Zuiko Digital 45mm 1:1.8, M.Zuiko Digital ED 75mm 1:1.8.
Leica D Vario-Elmar 14mm-150mm f/3.5 - f/5.6 ASPH.
OM-D E-M5, H-PS14042E, Gitzo GT1541T, Arca-Swiss Z1 DP ball-head.
Astrophotography: TEC 140 'scope, FLI ML16803 camera, ASA DDM60 Pro mount.


Top
 Profile  
 
PostPosted: Tue Sep 11, 2012 11:51 pm 
Offline

Joined: Wed May 09, 2012 10:34 pm
Posts: 1417
Location: Mexico City, Mexico
I sincerely don't understand much about astrophotography, but I really liked your pictures Bob, good job!

_________________
Gear: Canon SX20 IS, Canon Rebel T3i, Canon EF-S 18-55mm, Canon EF-S 55-250mm f/4-5.6 IS II, Canon EF 50mm f/1.8 II
Wishlist: Canon EF 100-400mm f/4-5.6L
Visit me and leave me a comment in My Flickr :)


Image


Top
 Profile  
 
PostPosted: Sat Sep 15, 2012 7:11 am 
Offline

Joined: Sat May 29, 2010 11:27 pm
Posts: 773
Location: Toronto, Canada
As much as I love the first one, the one without the stars is equally as impressive! I like the unique approach.

_________________
Flickr


Top
 Profile  
 
PostPosted: Wed May 22, 2013 12:43 pm 
Offline
Moderator
User avatar

Joined: Sat Sep 30, 2006 4:30 pm
Posts: 9824
Location: UK
Hi folks,

It pains me to look back on my efforts of only about six months ago as shown above. Here's a reworking, using exactly the same original data, but now with full-fat star colour and my preferred homegrown recipe for dealing with the hydrogen-alpha emission:

    Image

      The Heart Nebula - IC1805

I've also taken the opportunity to orient the image "north up" this time around. A 2048x2048 pixel version is available here. Processing followed almost exactly the same recipe I used with my "Astronomy Picture of the Day" Soul Nebula image so I was able to replace the nebulosity and star image components in the "Soul Nebula" Photoshop stack and perform only the most minor tweaks, a great time saver and something that finally allows me to say I've found my "house-style". 8)

Update: If you are using the Firefox browser then try right-clicking on the image and selecting "View Image", the first option. That gets rid of the astro-unfriendly light background of the forum. When you are done then click the "Back" button to get back to the forum. If you are using IE then shame on you. :P :lol:

Bob.

_________________
Olympus OM-D E-M1 + M.Zuiko Digital ED 12-40mm f/2.8, Lumix 7-14mm f/4, Leica DG Summilux 15mm f/1.7 ASPH, M.Zuiko Digital 45mm 1:1.8, M.Zuiko Digital ED 75mm 1:1.8.
Leica D Vario-Elmar 14mm-150mm f/3.5 - f/5.6 ASPH.
OM-D E-M5, H-PS14042E, Gitzo GT1541T, Arca-Swiss Z1 DP ball-head.
Astrophotography: TEC 140 'scope, FLI ML16803 camera, ASA DDM60 Pro mount.


Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 4 posts ] 

All times are UTC


Who is online

Users browsing this forum: No registered users and 3 guests


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum

Search for:
Jump to:  

All words, images, videos and layout, copyright 2005-2012 Gordon Laing. May not be used without permission.
/ How we test / Best Cameras / Advertising / Camera reviews / Supporting Camera Labs

Webdesign by Alphabase IT
Powered by phpBB® Forum Software © phpBB Group