Go Back   IceInSpace > Beginners Start Here > Beginners Astrophotography
Register FAQ Calendar Today's Posts Search

Reply
 
Thread Tools Rate Thread
  #1  
Old 17-07-2015, 12:16 AM
Cimitar (Evan)
Evan Morris

Cimitar is offline
 
Join Date: Dec 2006
Location: Gunnedah, NSW
Posts: 250
Trifid Nebula - 1st IIS photo posting

Hi everyone

I've been an in-active IIS member for quite a few years now, and have been learning stacks whilst reading the posts and enjoying the photos!

So... after much trial and error over the past 6 months I figured I'd finally upload one of my better images thus far. The biggest thing I've learnt with astrophotography to date - that image processing is just as important as taking the actual photos! If you put the effort in it's well worth the results

Details:
Trifid Nebula
8 inch LX200 ACF
Canon 600D
ISO 6400
12 x 45 sec exposures (guided)
Processed in Nebulosity & Photoshop.

Apologies if the pic is lossy, I converted to jpg. All comments welcome
Cheers
Evan
Attached Thumbnails
Click for full-size image (Trifid-Nebula_web.jpg)
85.1 KB124 views
Reply With Quote
  #2  
Old 17-07-2015, 12:31 AM
raymo
Registered User

raymo is offline
 
Join Date: Sep 2011
Location: margaret river, western australia
Posts: 6,070
Great first posted image Evan. It is interesting that although your blue is quite strong, it doesn't extend into the area which is grey/brown in your image, but pale blue in most other images I have seen of M20. M20 is quite bright, so you could have used a lower ISO, say 1600,
resulting in less noise to deal with.
raymo

Last edited by raymo; 17-07-2015 at 12:49 AM. Reason: more info
Reply With Quote
  #3  
Old 17-07-2015, 12:35 AM
cometcatcher's Avatar
cometcatcher (Kevin)
<--- Comet Hale-Bopp

cometcatcher is offline
 
Join Date: Jan 2005
Location: Cloudy Mackay
Posts: 6,542
That's a nice one Evan, the colours are great.

The only advice I could offer is go a little less heavy on the noise reduction as the image looks a bit mottled. Keep an eye on the black point too. Otherwise a great image.
Reply With Quote
  #4  
Old 17-07-2015, 08:04 AM
Somnium's Avatar
Somnium (Aidan)
Aidan

Somnium is offline
 
Join Date: Oct 2014
Location: Sydney
Posts: 1,669
Great shot, a lot better than the first image I posted on iis!
Reply With Quote
  #5  
Old 17-07-2015, 09:06 AM
Rod771's Avatar
Rod771 (Rod)
Turn the lights off!

Rod771 is offline
 
Join Date: Aug 2012
Location: Parklea NSW
Posts: 1,207
Nice one, Evan!

You've picked up a fair bit of faint dust for 45 sec subs. Must be great to have lovely dark skies right on your door step. Did you shoot this from in town or out?

Cheers

Rod

Last edited by Rod771; 18-07-2015 at 06:24 PM.
Reply With Quote
  #6  
Old 17-07-2015, 10:24 AM
aarong (Aaron)
Registered User

aarong is offline
 
Join Date: Mar 2013
Location: Lower Blue Mountains, NSW
Posts: 92
Great first post! I really like how you have managed to keep some colour in the stars. I find that hard.

I'm looking forward to more posts!
Cheers,
Aaron
Reply With Quote
  #7  
Old 17-07-2015, 10:31 AM
rustigsmed's Avatar
rustigsmed (Russell)
Registered User

rustigsmed is offline
 
Join Date: Mar 2012
Location: Mornington Peninsula, Australia
Posts: 3,997
yep nice one evan,

great first light indeed!
i'd also go a bit easier on the noise reduction. I have the same camera and when doing shorter exposures I found it was best not to push it past iso 3200.

cheers

Rusty
Reply With Quote
  #8  
Old 17-07-2015, 08:54 PM
Cimitar (Evan)
Evan Morris

Cimitar is offline
 
Join Date: Dec 2006
Location: Gunnedah, NSW
Posts: 250
Quote:
Originally Posted by Rod771 View Post
Nice one, Evan!

You've picked up a fair bit of faint dust for 45 sec subs. Must great to have lovely dark skies right on your door step. Did you shoot his from in town or out?

Cheers

Rod
Hi Rod, yeah the skies are pretty great out here! This one was taken just on the outskirts of Gunnedah at a friends place, takes the edge off the street lights. My backyards pretty good though.

My folks have have a farm over in Coonabarabran so once it warms up a little I'm keen to take the scope over there for a few days.
Reply With Quote
  #9  
Old 17-07-2015, 09:00 PM
Cimitar (Evan)
Evan Morris

Cimitar is offline
 
Join Date: Dec 2006
Location: Gunnedah, NSW
Posts: 250
Quote:
Originally Posted by aarong View Post
Great first post! I really like how you have managed to keep some colour in the stars. I find that hard.

I'm looking forward to more posts!
Cheers,
Aaron
Hi Aaron, thanks mate!
When I first started taking pictures I was a bit disappointed with the quality of my images. I researched it and found an awesome aid in Scott Rosens DSLR-LLRGB workflow (it's a video that you can watch/download). I then replicated much of his work and use carboni astronomy tools (actions for PS) to help improve star colour.

I'm finding it's a fine line between too much noise reduction and ending up with a doctored image vs. natural effects.
Reply With Quote
  #10  
Old 17-07-2015, 09:06 PM
Cimitar (Evan)
Evan Morris

Cimitar is offline
 
Join Date: Dec 2006
Location: Gunnedah, NSW
Posts: 250
Thanks Raymo, Comet, Kevin & Rusty

Yeah, I think I opened the throttle a bit on the noise reduction, I got to the point where I was reducing the noise that I was introducing (hence the mottling).

When I first started I struggled to see the objects, so I increased the ISO. Now I'm slowly winding this back again, and hoping to focus more on ISO 1600-800 as I get better at auto-guiding and longer images. I recently got some great advice over in the beginner's equipment section about how to improve my polar alignment & go-to's so this should also help
Reply With Quote
  #11  
Old 18-07-2015, 08:09 PM
Rod771's Avatar
Rod771 (Rod)
Turn the lights off!

Rod771 is offline
 
Join Date: Aug 2012
Location: Parklea NSW
Posts: 1,207
Quote:
Originally Posted by Cimitar View Post
My folks have have a farm over in Coonabarabran so once it warms up a little I'm keen to take the scope over there for a few days.
Well, that's just Heaven! You lucky so and so.

Look forward to more images from AP journey.

My Parents live in Gunnedah, here's some nightscapes form a couple of visits last year.

From Porcupine lookout

Wean Rd
Reply With Quote
  #12  
Old 20-07-2015, 05:00 PM
Cimitar (Evan)
Evan Morris

Cimitar is offline
 
Join Date: Dec 2006
Location: Gunnedah, NSW
Posts: 250
Quote:
Originally Posted by Rod771 View Post
My Parents live in Gunnedah, here's some nightscapes form a couple of visits last year.
Your Wean Rd. photo is awesome! It's great to be able to see some familiar places!

Cheers
Evan
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 07:53 AM.

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