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

Reply
 
Thread Tools Rate Thread
  #1  
Old 15-04-2008, 07:48 PM
dugnsuz's Avatar
dugnsuz (Doug)
Registered User

dugnsuz is offline
 
Join Date: Aug 2005
Location: Hahndorf, South Australia
Posts: 4,373
Eta with Canon 70-200mm f4L+ 1.4x Extender

Hello all...
Most recent effort with my new Canon 70-200mm f4L lens with the Canon 1.4x extender.

Very happy with the quality this combo produces.

So, here is Eta Carina Nebula region with Canon 70-200mm f4L+ 1.4x Extender.

Canon 40D (unmodded yet!!!)
70 minutes total exposure time
FL = 280mm/f5.6 (448mm with1.6x crop factor)
iso 400
ICNR on

Cheers
Doug
Attached Thumbnails
Click for full-size image (Eta-IIS.jpg)
184.7 KB94 views
Reply With Quote
  #2  
Old 15-04-2008, 07:55 PM
madtuna's Avatar
madtuna (Steve)
an overactive imagination

madtuna is offline
 
Join Date: Dec 2007
Location: Erlistoun WA
Posts: 592
you've convinced me!

ordering an extender
Reply With Quote
  #3  
Old 15-04-2008, 08:07 PM
dugnsuz's Avatar
dugnsuz (Doug)
Registered User

dugnsuz is offline
 
Join Date: Aug 2005
Location: Hahndorf, South Australia
Posts: 4,373
Quote:
Originally Posted by madtuna View Post
you've convinced me!

ordering an extender
You wont regret it mate honestly!
Sharp to the edges with the extender at f5.6
Reply With Quote
  #4  
Old 15-04-2008, 09:45 PM
Craig_L
Craig

Craig_L is offline
 
Join Date: May 2007
Location: Adelaide, South Australia
Posts: 558
Very nice. How long were the exposures?

Craig
Reply With Quote
  #5  
Old 15-04-2008, 10:07 PM
dugnsuz's Avatar
dugnsuz (Doug)
Registered User

dugnsuz is offline
 
Join Date: Aug 2005
Location: Hahndorf, South Australia
Posts: 4,373
Quote:
Originally Posted by Craig_L View Post
Very nice. How long were the exposures?

Craig
7x10mins Craig, a few of which were under a rising moon

Autoguided - 80mm AOE achromat / ToUcam 840k / PHD.
Skywatcher SynScan EQ5 Mount.
Camera/Lens and Guidescope on Side by Side Plate

Stacked in IP
Processed in PS - Levels/Curves and one PS Action (Smaller Stars 10%) only!
Reply With Quote
  #6  
Old 16-04-2008, 11:25 AM
winensky's Avatar
winensky
Registered User

winensky is offline
 
Join Date: Aug 2007
Location: Ballarat Vic
Posts: 268
Sharp as a tack and I can't believe what you are doing with an unmodded camera. I would love to see what you coud get with a modded and cooled one.

Kind regards
Matt
Reply With Quote
  #7  
Old 16-04-2008, 02:22 PM
dugnsuz's Avatar
dugnsuz (Doug)
Registered User

dugnsuz is offline
 
Join Date: Aug 2005
Location: Hahndorf, South Australia
Posts: 4,373
Quote:
Originally Posted by winensky View Post
Sharp as a tack and I can't believe what you are doing with an unmodded camera. I would love to see what you coud get with a modded and cooled one.

Kind regards
Matt
Thanks Matt,
Hoping to mod the 40D soon.
It would be great to redo Eta again for comparison.
Cheers
Doug
Reply With Quote
  #8  
Old 16-04-2008, 02:35 PM
rogerg's Avatar
rogerg (Roger)
Registered User

rogerg is offline
 
Join Date: Feb 2006
Location: Perth, Western Australia
Posts: 4,563
Very nice Doug, as others have said, very sharp.
Reply With Quote
  #9  
Old 16-04-2008, 02:46 PM
dugnsuz's Avatar
dugnsuz (Doug)
Registered User

dugnsuz is offline
 
Join Date: Aug 2005
Location: Hahndorf, South Australia
Posts: 4,373
Quote:
Originally Posted by rogerg View Post
Very nice Doug, as others have said, very sharp.
Thanks Roger,
That mug warmer came in handy!
Reply With Quote
  #10  
Old 16-04-2008, 05:19 PM
avandonk's Avatar
avandonk
avandonk

avandonk is offline
 
Join Date: Aug 2005
Location: Melbourne
Posts: 4,786
I must have missed this one. Looks really great. I never tire of this neb and that is why I use it as a test object. You will find the Canon 1.4X produces as good an image as the original lens or very close to it. You have to pixel peep to see the very slight difference. The Canon 2X does not at least for stellar images or very bright contrast as it introduces very slight CA and amplifies the CA of the lens.

This zoom should give you years of flawless service. Any L lens is highly weather resistant and dust sealed. This is very important with a zoom as some can pump in the dust as they zoom.

Again a wonderful deep image as I can see faint nebulosity that an unmodded camera should not normally record unless you have dark skies.

Bert
Reply With Quote
  #11  
Old 16-04-2008, 05:31 PM
dugnsuz's Avatar
dugnsuz (Doug)
Registered User

dugnsuz is offline
 
Join Date: Aug 2005
Location: Hahndorf, South Australia
Posts: 4,373
Quote:
Originally Posted by avandonk View Post
I must have missed this one. Looks really great. I never tire of this neb and that is why I use it as a test object. You will find the Canon 1.4X produces as good an image as the original lens or very close to it. You have to pixel peep to see the very slight difference. The Canon 2X does not at least for stellar images or very bright contrast as it introduces very slight CA and amplifies the CA of the lens.

This zoom should give you years of flawless service. Any L lens is highly weather resistant and dust sealed. This is very important with a zoom as some can pump in the dust as they zoom.

Again a wonderful deep image as I can see faint nebulosity that an unmodded camera should not normally record unless you have dark skies.

Bert
Thanks Bert,
My skies in Hahndorf are quite dark - not pitch black by any means. A couple of these subs (3 I think) were taken with the moon shining through the trees too, so I think I have invested in a winner with this mini setup.

The short FL also hides the EQ5's tracking flaws nicely!
The lens isn't huge on my side by side plate either - a small footprint, weight-wise.

Cheers
Doug
Reply With Quote
  #12  
Old 16-04-2008, 05:54 PM
davewaldo's Avatar
davewaldo
Tasmania

davewaldo is offline
 
Join Date: Sep 2006
Location: Australia - Hobart
Posts: 727
Do you use the Canon Lens clamp/tripod mount Doug? Or do you find the setup is sturdy enough just mounted from the camera?

Dave
Reply With Quote
  #13  
Old 16-04-2008, 06:05 PM
dugnsuz's Avatar
dugnsuz (Doug)
Registered User

dugnsuz is offline
 
Join Date: Aug 2005
Location: Hahndorf, South Australia
Posts: 4,373
Quote:
Originally Posted by davewaldo View Post
Do you use the Canon Lens clamp/tripod mount Doug? Or do you find the setup is sturdy enough just mounted from the camera?

Dave
I use the generic ebay "For Canon" tripod collar. It's a little snug on the lens so that the lock doesn't fully screw flush, but is still rock solid on the mount. ($20 v's $120 for genuine Canon model)
I bought one of these from Bintel to attach the collar, camera and lens to the dovetail of the side by side plate...
https://www.bintelshop.com.au/Images/Stock/7734X.jpg

I tried the Camera attached to this (no collar) with a smaller lens and it was reassuringly solid also.

Doug
Reply With Quote
  #14  
Old 16-04-2008, 06:10 PM
davewaldo's Avatar
davewaldo
Tasmania

davewaldo is offline
 
Join Date: Sep 2006
Location: Australia - Hobart
Posts: 727
Thanks doug, thats good to know.
Reply With Quote
  #15  
Old 16-04-2008, 06:12 PM
RB's Avatar
RB (Andrew)
Moderator

RB is offline
 
Join Date: Aug 2005
Posts: 26,643
Great image Doug !
Excellent work.

Do you use the lens hood when shooting?
I highly recommend you use it at all times.
Also helps with the dew.

Also I'd recommend a clear filter for the lens to protect the front element at all times.

I use a good quality Hoya UV filter.

Keep up the good work.

Reply With Quote
  #16  
Old 16-04-2008, 06:24 PM
dugnsuz's Avatar
dugnsuz (Doug)
Registered User

dugnsuz is offline
 
Join Date: Aug 2005
Location: Hahndorf, South Australia
Posts: 4,373
Quote:
Originally Posted by RB View Post
Great image Doug !
Excellent work.

Do you use the lens hood when shooting?
I highly recommend you use it at all times.
Also helps with the dew.

Also I'd recommend a clear filter for the lens to protect the front element at all times.

I use a good quality Hoya UV filter.

Keep up the good work.

Yes Andrew,
I use the lens hood, but I sold my hoya UV filter to sweeten the sale of my 17-85mm kit lens
I could do with it now - I treat the lenses very carefully but accidents are accidents after all!
Doug
Reply With Quote
  #17  
Old 16-04-2008, 06:30 PM
jase (Jason)
Registered User

jase is offline
 
Join Date: Sep 2006
Location: Melbourne, Victoria
Posts: 3,916
Good composition Doug. Colours look well balanced too. Keep them coming.
Reply With Quote
  #18  
Old 16-04-2008, 06:35 PM
Phil's Avatar
Phil
Phil H

Phil is offline
 
Join Date: Apr 2006
Location: Cowra NSW
Posts: 1,497
Great shot with a great lens. Well done
Phil
Reply With Quote
  #19  
Old 16-04-2008, 06:42 PM
avandonk's Avatar
avandonk
avandonk

avandonk is offline
 
Join Date: Aug 2005
Location: Melbourne
Posts: 4,786
If you leave the lens hood on when moving it will protect the front element from 'accidents'. Unless your UV filter is optically near flat/parallel it it will lower the lenses performance.

Bert
Reply With Quote
  #20  
Old 16-04-2008, 07:20 PM
Garyh's Avatar
Garyh
Amongst the stars

Garyh is offline
 
Join Date: Jun 2006
Location: Glen Innes, N.S.W.
Posts: 2,888
Excellent result Doug, like everyones comments...very sharp and nicely saturated!
Oh I do want one...lol
cheers Gary
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 01:20 AM.

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