Free Shipping on ALL Products
camera reviewsbest cameraslens reviewsphotography tipscamera forumvideo toursphotography bookssupport me
It is currently Wed Oct 22, 2014 1:52 pm

All times are UTC




Post new topic Reply to topic  [ 20 posts ]  Go to page Previous  1, 2
Author Message
PostPosted: Fri Jun 07, 2013 4:45 pm 
Offline
User avatar

Joined: Fri Dec 28, 2007 3:05 pm
Posts: 1127
Just seen this Bob - very nice!! Don't joke about the Hernias!! I am a Karate black belt and I've done a LOT of weight training. But lugging a C11 in and out of doors gave me a hospital visit I could well have done without. Please be careful!!
Greg

_________________
Nexstar 11 GPS, 2 x Sky 90, M25C, MaximDL, Photshop CS3, Noel Carboni's Photoshop actions, 7 foot Pulsar fibreglass dome, Canon 40D, 100mm macro lens, 28-200mm zoom lens, 17-55mm f#2.8 zoom lens, 100-400mm zoom lens, 1.4x converter, 2x converter.
http://www.newforestobservatory.com/
http://www.flickr.com/photos/12801949@N02/


Top
 Profile  
 
PostPosted: Fri Jun 07, 2013 5:12 pm 
Offline
Moderator
User avatar

Joined: Sat Sep 30, 2006 4:30 pm
Posts: 9823
Location: UK
Hi Greg,

Thanks for the warning - I trust and hope you are fully recovered. I try to keep fit and I do try to watch my posture when lifting the mount but the years march on. I suppose one day I'll either have to build some sort of permanent structure (not something I want in my small garden) or investigate the possibility of adapting an engine hoist to take the strain for me - they aren't too expensive and it should be possible to pave a suitable approach path to the pier. But maybe before I need to do all I'll be following other interests or maybe even renting time on a remote telescope. Life is never dull. :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  
 
PostPosted: Sat Jun 08, 2013 9:21 am 
Offline
User avatar

Joined: Fri Dec 28, 2007 3:05 pm
Posts: 1127
Hi Bob,

Yep fully recovered now, was quite a few years back, and totally unexpected. Anything (like an engine hoist) to take the strain is a good idea. We aren't built to heave loads like that. As you know the spine is actually designed as a bridge and we have turned it into a badly engineered tower (by getting off all fours).
Greg

_________________
Nexstar 11 GPS, 2 x Sky 90, M25C, MaximDL, Photshop CS3, Noel Carboni's Photoshop actions, 7 foot Pulsar fibreglass dome, Canon 40D, 100mm macro lens, 28-200mm zoom lens, 17-55mm f#2.8 zoom lens, 100-400mm zoom lens, 1.4x converter, 2x converter.
http://www.newforestobservatory.com/
http://www.flickr.com/photos/12801949@N02/


Top
 Profile  
 
PostPosted: Mon Jun 10, 2013 12:34 pm 
Offline
Moderator
User avatar

Joined: Sat Sep 30, 2006 4:30 pm
Posts: 9823
Location: UK
Hi folks,

It looks like the hard work re-aligning and re-training the ASA mount has paid off. Here's a central crop at 100% scale from a stack of eight 25 minute unguided hydrogen alpha exposures taken during the limited hours of darkness last night:

    Image

Minimal processing at this stage and there will be a lot more detail to pull out of the nebulosity but the stars are round so the tracking of the mount is certainly a lot better than it has ever been. Here's the big picture, reduced from 4096x4096 to 1024x1024:

    Image

The subject is NGC 7822. The plan is to collect similar data using my new SII (sulphur), OIII (oxygen) and maybe even NII (nitrogen) narrowband filters as well as a set of 200 second red, green and blue exposures to get the stars in their correct colours. Then the fun starts as each of the narrowband images must have the stars removed and then processed further before combining into a false colour image to which the stars can be added back. Even if we are blessed with a run of clear moonless nights I think there may be many weeks of work to do to get to the final result.

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: Thu Jul 18, 2013 12:53 am 
Offline
Moderator
User avatar

Joined: Sat Sep 30, 2006 4:30 pm
Posts: 9823
Location: UK
.
One thing I haven't really mentioned about this setup is the MicroTouch Focuser and the bundled FocusMax software. Not cheap but it is such a time saver and the time saved (focussing is automatic and takes less than a minute) really leverages the rest of the kit, especially as observing time is so weather dependant here in the UK. Tonight, having completed my marathon collection of subs (about 27 hours worth) of NGC7822 a day early I finally got around to characterising the temperature profile of the telescope. As a result I can now, if the situation dictates, enable automatic focus shift compensation for those nights when the temperature is falling rapidly. Something I may not use too often as it is so quick and easy to refocus but it's another tool in the chest. 8)

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  [ 20 posts ]  Go to page Previous  1, 2

All times are UTC


Who is online

Users browsing this forum: No registered users and 2 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