Go Back   IceInSpace > Images > Nightscapes
Register FAQ Calendar Today's Posts Search

Reply
 
Thread Tools Rate Thread
  #1  
Old 18-05-2013, 09:46 PM
Octane's Avatar
Octane (Humayun)
IIS Member #671

Octane is offline
 
Join Date: Dec 2005
Location: Canberra
Posts: 11,159
Another Milky Way

A single 5-minute exposure from last night.

I had set up to take several hours of data, however, I was defeated by really bad dew. The whole rig was dripping wet.

So, working with just the one image, the goal was to bring the Milky Way to prominence.

In order to do this, I added some contrast in varying degrees to blacken the background sky, slightly increased the contrast in the Milky Way in relation to the background sky, and eroded the smaller stars that dominated the scene.

I really, really wish I had many hours of data on this to work with. I can't wait until next new Moon.

There was a bit of airglow around last night, as evidenced by the greenish tinges here and there.

Still, I'm quite happy with the natural appearance.

Canon EOS 5D Mark III, Canon EF 17-40mm f/4L USM
300s f/5.0 at 17.0mm iso1600

Slightly larger version available here.

H
Attached Thumbnails
Click for full-size image (_MG_0567_2__.jpg)
27.8 KB58 views
Reply With Quote
  #2  
Old 18-05-2013, 09:51 PM
pluto's Avatar
pluto (Hugh)
Astro Noob

pluto is offline
 
Join Date: Dec 2011
Location: Sydney
Posts: 1,982
Very nice for a single
Reply With Quote
  #3  
Old 18-05-2013, 09:53 PM
Octane's Avatar
Octane (Humayun)
IIS Member #671

Octane is offline
 
Join Date: Dec 2005
Location: Canberra
Posts: 11,159
Thanks, Hugh!

I forgot to mention, I had in-camera noise reduction disabled for this as I had kicked off a sequence of images and I had taken a bunch of dark frames before I began. It's still very clean for 300 seconds at ISO-1600. Probably had something to do with the fact that it was below 0 at the time!

H
Reply With Quote
  #4  
Old 18-05-2013, 10:12 PM
Rod771's Avatar
Rod771 (Rod)
Turn the lights off!

Rod771 is offline
 
Join Date: Aug 2012
Location: Parklea NSW
Posts: 1,207
That's awesome H!

Likewise, I love the natural look, great shot

I imagine if our eyes had greater sensitivity , we'd look up and that's exactly what we would see.

Minus zero that would have defeated me.
Reply With Quote
  #5  
Old 18-05-2013, 10:43 PM
colinmlegg's Avatar
colinmlegg (Colin)
Registered User

colinmlegg is offline
 
Join Date: Dec 2011
Location: Perth, WA
Posts: 610
Big fan of natural colours too. Nicely done mate
Reply With Quote
  #6  
Old 18-05-2013, 10:56 PM
Larryp's Avatar
Larryp (Laurie)
Registered User

Larryp is offline
 
Join Date: Apr 2012
Location: Sydney
Posts: 5,244
Very nice, H!
Reply With Quote
  #7  
Old 19-05-2013, 07:45 AM
leon's Avatar
leon
Registered User

leon is offline
 
Join Date: Apr 2006
Location: Warrnambool
Posts: 12,800
Nice one H, yep, below 0 will do it.

Leon
Reply With Quote
  #8  
Old 19-05-2013, 08:30 AM
strongmanmike's Avatar
strongmanmike (Michael)
Highest Observatory in Oz

strongmanmike is offline
 
Join Date: May 2006
Location: Canberra
Posts: 17,681
I agree, the colours are really nice, a good lens is worth its weight in gold

Mike
Reply With Quote
  #9  
Old 19-05-2013, 09:35 AM
gregbradley's Avatar
gregbradley
Registered User

gregbradley is offline
 
Join Date: Feb 2006
Location: Sydney
Posts: 18,183
That's a great shot Humi.
I like the look you achieved as well.
One tip for dew - I got a piece of foam cored insulation to wrap around the lens. I got some chemical heat pads that stick on from the chemist (about $1 each).

I focus. I tape the focus ring so it won't shift. I have to do this otherwise wrapping the insulation around the lens can shift focus. I stick on the heat pad - they are supposed to last 6-12 hours), I wrap the insulation around the lens being careful for it not to extend past the hood (wideangle lenses can pick it up otherwise). I fix it with a rubber band.

That can help reduce dew. Taking a lens from a warm room out into cold humid night with dew point at the wrong level can be almost instant dew. The wrap around keeps the lens just above dew point.
Not sure if it would work in a dripping situation but it did work nicely last winter when I did a lot of time lapses.

There's always dew straps but thats just another thing - batteries, leads, straps. The above is convenient and fits in the lens bag.

Greg.
Reply With Quote
  #10  
Old 19-05-2013, 07:38 PM
astronobob's Avatar
astronobob (Bob)
Casual Cosmos Capturer

astronobob is offline
 
Join Date: Jun 2010
Location: Gold Coast SE QLD
Posts: 4,468
Has a good 3D about it also H, very nice to look at, magic stuff
Reply With Quote
  #11  
Old 19-05-2013, 10:03 PM
bloodhound31
Registered User

bloodhound31 is offline
 
Join Date: Aug 2006
Posts: 4,628
+1 for natural colours, all the way. Beaut shot H.

Baz.
Reply With Quote
  #12  
Old 22-05-2013, 08:19 AM
Ross G
Registered User

Ross G is offline
 
Join Date: Apr 2007
Location: Cherrybrook, NSW
Posts: 5,013
Nice photo H.

Great looking colours.

Ross.
Reply With Quote
Reply

Bookmarks


Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT +10. The time is now 09:55 PM.

Powered by vBulletin Version 3.8.7 | Copyright ©2000 - 2025, Jelsoft Enterprises Ltd.
Advertisement
Bintel
Advertisement