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

Reply
 
Thread Tools Rate Thread
  #1  
Old 07-04-2008, 10:54 PM
Prickly
Registered User

Prickly is offline
 
Join Date: May 2007
Location: Canberra
Posts: 347
Tarantula nebula through an achromat on a chinese mount!

Hi All,

Heres a photo taken by Ken Charlwood and I through the vixen 140 neoachromat on an Eq6 from the SPSP using Ken's very fine QHY8 camera.

We used a UHCS filter and a Williams optics 0.8x focal reducer.
Mild halo reduction in Images plus
Some very mild adjustment for distorsion in photoshop
Some minor processing - curves, contrast etc.

All went well till we drained Ken's batteries!

cheers
David
Attached Thumbnails
Click for full-size image (tarantula_NA140_vsmall_e.jpg)
176.7 KB178 views
Reply With Quote
  #2  
Old 07-04-2008, 11:10 PM
Davros's Avatar
Davros (Lauren)
stumblebum

Davros is offline
 
Join Date: Mar 2008
Location: Maroochydore
Posts: 765
Spectacular, really sharp with nice colour
Reply With Quote
  #3  
Old 08-04-2008, 04:55 AM
iceman's Avatar
iceman (Mike)
Sir Post a Lot!

iceman is offline
 
Join Date: Sep 2004
Location: Gosford, NSW, Australia
Posts: 36,799
Nice image, was great to see you guys at it beside me at SPSP.

Always a problem when teh batteries go dead when the night is still young!
Reply With Quote
  #4  
Old 08-04-2008, 05:56 AM
Prickly
Registered User

Prickly is offline
 
Join Date: May 2007
Location: Canberra
Posts: 347
Thanks Mike and Davros,

That eta carina came up a treat too Mike. Great effort (especially considering the wild winds!)

Guess the batteries etc is all part of the challenge.

Cheers
David
Reply With Quote
  #5  
Old 08-04-2008, 08:10 AM
Garyh's Avatar
Garyh
Amongst the stars

Garyh is offline
 
Join Date: Jun 2006
Location: Glen Innes, N.S.W.
Posts: 2,888
Nice and sharp and love the colors!
cheers Gary
Reply With Quote
  #6  
Old 20-04-2008, 09:06 PM
Prickly
Registered User

Prickly is offline
 
Join Date: May 2007
Location: Canberra
Posts: 347
Here is a reprocessed version - I've cropped to try and increase the scale to show the detail in the nebula a little more. Michael S. who was also assisting us suggested that the blue needed to be enhanced a little. So I've done that too.
Attached Thumbnails
Click for full-size image (tarantula_closeup_small.jpg)
190.7 KB74 views
Reply With Quote
  #7  
Old 20-04-2008, 09:57 PM
Zuts
Registered User

Zuts is online now
 
Join Date: Mar 2007
Location: sydney
Posts: 1,837
Hi Prickly,

The extra processing and the crop? makes for a far more enjoyable image in my opinion. Good stuff

Paul
Reply With Quote
  #8  
Old 20-04-2008, 10:22 PM
leon's Avatar
leon
Registered User

leon is offline
 
Join Date: Apr 2006
Location: Warrnambool
Posts: 12,800
Yep, I agree it is a beauty, you have captured this one nicely, well done.

Leon
Reply With Quote
  #9  
Old 20-04-2008, 10:25 PM
Inmykombi's Avatar
Inmykombi (Geoff)
They aint just doubles :o

Inmykombi is offline
 
Join Date: Oct 2007
Location: Gosford NSW Australia
Posts: 2,339
What a fantastic image.
The detail you have captured is nothing short of spectacular.
I can see structure that I havent seen in many books I have bought.

I recently sold an EQ4 Chinese mount thinking it was " less than desirable" to keep for serious observing / imaging.
But you have proved me wrong.

Well done and keep up the good work.

PS. Always keep a spare battery pack ready........

Geoffro.
Reply With Quote
  #10  
Old 20-04-2008, 11:58 PM
Prickly
Registered User

Prickly is offline
 
Join Date: May 2007
Location: Canberra
Posts: 347
Thanks Geoffro, Leon and Paul,

Thanks for the encouraging comments. Unfortunately its hard in the widefield view with the 200kb to show up all the detail so I thought I should crop out the main bit.

Yes the Eq6 with Kens ST4 autoguider really did a great job and I'm really happy with the way it came out.

We certainly learnt the hard way about the battery. Next year I'll bring a spare battery. Might have to invest in a trailer I think - the accessories seem to build up dont they.

Cheers
David
Reply With Quote
  #11  
Old 22-04-2008, 10:21 PM
winensky's Avatar
winensky
Registered User

winensky is offline
 
Join Date: Aug 2007
Location: Ballarat Vic
Posts: 268
Great image. really exciting colours and lots of light. So sad the LMC is setting... so many fine nebulae.
Reply With Quote
  #12  
Old 23-04-2008, 07:01 PM
Tilt's Avatar
Tilt (Michael)
Registered User

Tilt is offline
 
Join Date: Jan 2008
Location: Emerald, QLD
Posts: 564
Yes it was good fun with Ken's QHY8, lets see what we can get with my 350D. The Canon stretched its legs taking some daytime SPSP photos but didnt get a go at the deep sky stuff.
Reply With Quote
  #13  
Old 23-04-2008, 09:35 PM
Ken
Registered User

Ken is offline
 
Join Date: Dec 2005
Location: Wattle Ponds via Singleton
Posts: 365
Tarantula nebula through an achromat on a chinese mount!

Hi, the image looks great, with plenty of detail. You've convinced me that you can do great imaging with an achromat and a UHCS filter.
Clear skies
Ken
Reply With Quote
  #14  
Old 23-04-2008, 10:12 PM
Prickly
Registered User

Prickly is offline
 
Join Date: May 2007
Location: Canberra
Posts: 347
Hi Winensky (good idea by the way- I think we are on the same wavelength!), Michael and Ken,

Yes, I think the achromat-UHCS combo is not to be underestimated. Having access to a QHY and autoguiders also helps somewhat (I think I'm convinced about the QHY8 now too Ken). Having compared to some other tarantula images (even 5-6 inch apos) I think its not too bad.

Having said I can feel a 350D imaging session coming on Michael. Pity we ran into the slight technical problems with the battery at Wiruna but at least you now have the gear Michael so we can give it a run over here. I'm convinced it is possible to get good results unmodded so well give it a go! Obviously less sensitive to Ha but not impossible to pick some up I think. We will have to resort to hand guiding which will be fun.

Cheers,
David
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 08:14 AM.

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