Free Shipping on ALL Products
camera reviewsbest cameraslens reviewsphotography tipscamera forumvideo toursphotography bookssupport me
It is currently Wed Jul 23, 2014 6:09 pm

All times are UTC




Post new topic Reply to topic  [ 10 posts ] 
Author Message
PostPosted: Sun Sep 26, 2010 8:22 pm 
Offline
User avatar

Joined: Sun May 25, 2008 12:48 pm
Posts: 8022
Location: UK
I vaguely remember seeing a product before which converted a tripod and ball head into a motorised EQ mount for DSLRs... but I can't remember what it was called or where I saw it. Any ideas?

Basically with the skies getting darker earlier again, I might as well get ready for this winter season. I'm not convinced on the tracking ability of my existing alt-az goto scope mount, and it has a very weak clutch and doesn't like my DSLR hanging off it much. My other motorised EQ mount for the Newtonian is just too unwieldy to practically set up and use.

I feel fast camera lenses will get me the best of both worlds. I wanted to update my fast prime set for general photography anyway, and arguably this opens up a new area for me to explore too.

I guess a side issue is the suitability of camera lenses for this application...

_________________
Canon DSLRs: 7D, 5D2, 1D, 600D, 450D full spectrum, 300D IR mod
Lenses: EF 35/2, 50/1.8, 85/1.8, 135/2+SF, 28-80 V, 70-300L, 100-400L, TS-E 24/3.5L, MP-E 65, EF-S 15-85 IS
3rd party: Zeiss 2/50 makro, Samyang 8mm fisheye, Sigma 150 macro, 120-300 f/2.8 OS, Celestron 1325/13
Tinies: Sony HX9V.


Top
 Profile  
 
 Post subject:
PostPosted: Sun Sep 26, 2010 8:45 pm 
Offline
User avatar

Joined: Sun May 25, 2008 12:48 pm
Posts: 8022
Location: UK
To answer my own question, it turns out the product I was thinking of is the AstroTrac.

_________________
Canon DSLRs: 7D, 5D2, 1D, 600D, 450D full spectrum, 300D IR mod
Lenses: EF 35/2, 50/1.8, 85/1.8, 135/2+SF, 28-80 V, 70-300L, 100-400L, TS-E 24/3.5L, MP-E 65, EF-S 15-85 IS
3rd party: Zeiss 2/50 makro, Samyang 8mm fisheye, Sigma 150 macro, 120-300 f/2.8 OS, Celestron 1325/13
Tinies: Sony HX9V.


Top
 Profile  
 
 Post subject:
PostPosted: Mon Sep 27, 2010 12:16 am 
Offline

Joined: Thu Jul 31, 2008 4:31 am
Posts: 296
I would prefer an EQ Mount + Guiding scope + Guiding cam. It very hard to track more then 30 sec without auto-guiding unless you have a perfect polar alignment and a perfectly level mount.

_________________
Canon T2i (550D)- Tamron 17-50 F2.8 Non-VC, Sigma 70-200mm F2.8 EX DG OS HSM, Canon EF-S 55-250mm F4.5-F5.6
http://www.astronomyphotography.com


Top
 Profile  
 
 Post subject:
PostPosted: Mon Sep 27, 2010 3:12 am 
Offline
User avatar

Joined: Tue Jul 27, 2010 8:57 am
Posts: 1551
Location: Winterpeg, Manisnowba, Canada
Hey Popo

I's still use your scope's tracking mount, those mounts do the best jobs. Perhaps you could get a new lighter mount or something, going piggyback is the best and most accurate way to track. Also, I'd feel that it would be a bit of a waste to spend that much money on a product like that, when you could get a new scope mount for that much.

_________________
-Evan

Gear: 7 Nikon Nikkor AI-S and AF-S lenses, SB-700 flash, Nikon D7000, Nikon FM, variety of accessories

"There are no rules for good photographs, there are only good photographs."
- Ansel Adams


Top
 Profile  
 
 Post subject:
PostPosted: Mon Sep 27, 2010 6:43 am 
Offline

Joined: Mon Jan 18, 2010 3:52 pm
Posts: 2173
Location: The Netherlands
Ive got the EQ3 with motors, and I got my dSLR mounted on it. Telelens and 30-40s exposure? Here we come...
Btw, I uploaded M31 taken with an EQ3 mount, but I took way too less pictures to get the best s/r ratio. Check the threat below these 8)

_________________
Ruben

Panasonic DMC-FZ18, Panasonic DMC-FZ28, Canon G5, Canon 350D, Canon 50D + BG-E2N
Tamron 17-50 2.8, Canon EF 70-200mm f/4L USM,
Canon 18-55 II plus lots of Minolta MD/M42 lenses and bodies


Top
 Profile  
 
 Post subject:
PostPosted: Mon Sep 27, 2010 7:29 am 
Offline
User avatar

Joined: Sun May 25, 2008 12:48 pm
Posts: 8022
Location: UK
My goal is to find something easy to buy and set up, which most astronomical viewing kit isn't designed for! The existing Alt-az mount I have is great apart from a weak clutch, so it is prone to slipping when I put a heavy DSLR on it. I don't have a rotation issue with it up to 30 secs. The other equatorial is just a huge lump of metal that is just impractical to set up quickly.

The AstroTrac has optional polar alignment scope with offset guides for using polaris, plus can be connected to guiding later on if desired.

To start with I don't think I'll be going above 30 sec exposures since that would require me to start looking at external shutter control to automate. I would probably not be going above 400mm on crop sensor if you want a feel for the level I'm going for, typically probably 150mm or less.

If you can point out something specific of a similar price that you think is as easy to set up and use at lower cost, I'm open to suggestions.

If I were to get another scope, I notice that Meade now do a self set up kit with built in everything for setup and guiding. But I think that's for much later on.

_________________
Canon DSLRs: 7D, 5D2, 1D, 600D, 450D full spectrum, 300D IR mod
Lenses: EF 35/2, 50/1.8, 85/1.8, 135/2+SF, 28-80 V, 70-300L, 100-400L, TS-E 24/3.5L, MP-E 65, EF-S 15-85 IS
3rd party: Zeiss 2/50 makro, Samyang 8mm fisheye, Sigma 150 macro, 120-300 f/2.8 OS, Celestron 1325/13
Tinies: Sony HX9V.


Top
 Profile  
 
 Post subject:
PostPosted: Mon Sep 27, 2010 8:12 am 
Offline

Joined: Sat Oct 11, 2008 8:27 pm
Posts: 404
Location: Bristol, UK
I dont think you will go far wrong with an Astrotrac by all accounts they are so finely manufactured that, providing you have good polar alignment, can give good tracking upto several minutes long.

Check out a couple of these:

http://stargazerslounge.com/imaging-deep-sky/112490-ngc7000-sadr-region-ssp.html

http://stargazerslounge.com/imaging-deep-sky/112684-wider-than-normal.html

I think getting the optional polar scope with this is essential though!

_________________
Lee Diggle
My Astronomy Blog | My Photography Gallery


Top
 Profile  
 
 Post subject:
PostPosted: Mon Sep 27, 2010 11:55 am 
Offline
User avatar

Joined: Sun May 25, 2008 12:48 pm
Posts: 8022
Location: UK
*if* I go with the astrotrac, I'd go for the full travel kit bundle which does include the polar scope. It might even motivate me to get out of the built up area to somewhere with less light pollution! That's one of the reasons I'm not keen on traditional scope mounts. Not in a particular hurry to decide... yet.

_________________
Canon DSLRs: 7D, 5D2, 1D, 600D, 450D full spectrum, 300D IR mod
Lenses: EF 35/2, 50/1.8, 85/1.8, 135/2+SF, 28-80 V, 70-300L, 100-400L, TS-E 24/3.5L, MP-E 65, EF-S 15-85 IS
3rd party: Zeiss 2/50 makro, Samyang 8mm fisheye, Sigma 150 macro, 120-300 f/2.8 OS, Celestron 1325/13
Tinies: Sony HX9V.


Top
 Profile  
 
 Post subject:
PostPosted: Mon Sep 27, 2010 12:01 pm 
Offline

Joined: Sat Oct 11, 2008 8:27 pm
Posts: 404
Location: Bristol, UK
It certainly would be a convenient piece of kit to take to a dark site and a damn site easier to set up. I have been tempted with this myself, alas money is not my friend at the moment.

_________________
Lee Diggle
My Astronomy Blog | My Photography Gallery


Top
 Profile  
 
 Post subject:
PostPosted: Mon Sep 27, 2010 7:37 pm 
Offline
User avatar

Joined: Sun May 25, 2008 12:48 pm
Posts: 8022
Location: UK
Argh! £925.26 in shopping basket and credit card in front of me... (getting LP filter at same time) but yet I haven't clicked "buy" yet...

Edit: I have now :D

_________________
Canon DSLRs: 7D, 5D2, 1D, 600D, 450D full spectrum, 300D IR mod
Lenses: EF 35/2, 50/1.8, 85/1.8, 135/2+SF, 28-80 V, 70-300L, 100-400L, TS-E 24/3.5L, MP-E 65, EF-S 15-85 IS
3rd party: Zeiss 2/50 makro, Samyang 8mm fisheye, Sigma 150 macro, 120-300 f/2.8 OS, Celestron 1325/13
Tinies: Sony HX9V.


Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 10 posts ] 

All times are UTC


Who is online

Users browsing this forum: No registered users and 1 guest


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