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Old 18-04-2014, 08:05 AM
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Dob for a/p?

Has anyone tried astrophotography with a goto dob? Is it possible?
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Old 18-04-2014, 09:05 AM
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It is.. provided the object is near meridian (where there is no field rotation) and individual frames exposure times are relatively short..
Attached is the proof:
Newt 10", 400D, ISO1600, Dob mount, tracking with Bartels, stack 36x10 sec
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Old 18-04-2014, 09:29 AM
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It also depends on what sort of AP you want to do.

Planetary should be no problem, lunar as well.

Deep sky with hours of integration and long exposures, no.

Cheers
Stuart
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Old 18-04-2014, 10:07 AM
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Hi Simon, due to the mount method (altitude/azimuth rather than equatorial) the field of view appears to rotate over time. It is possible to use a de-rotator but I believe these are quite expensive. It could end up cheaper to buy a decent equatorial mount.
Unless of course it is a very large Dob (12"+) in which case the de-rotator would make sense.

See Gary Kopff's post (#5) in this thread:
http://www.iceinspace.com.au/forum/s...ad.php?t=73798

Last edited by MrB; 18-04-2014 at 05:41 PM. Reason: Nexus autocorrect fail
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Old 18-04-2014, 01:23 PM
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Quote:
Originally Posted by speach View Post
Has anyone tried astrophotography with a goto dob? Is it possible?
Mike Salway wrote an article on this very subject:

http://www.iceinspace.com.au/63-201-0-0-1-0.html
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Old 21-04-2014, 10:20 PM
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Hi simon

Here is a link to my goto dob photos deep sky and planetary

https://www.flickr.com/photos/80336656@N07/

Cheers

Rusty
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Old 22-04-2014, 08:29 AM
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Hi simon

Here is a link to my goto dob photos deep sky and planetary

https://www.flickr.com/photos/80336656@N07/

Cheers

Rusty

Thanks I think that has made up my mind, now all I've got to do is get one!!!!
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Old 22-04-2014, 10:22 AM
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rustigsmed (Russell)
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Originally Posted by speach View Post
Thanks I think that has made up my mind, now all I've got to do is get one!!!!
No worries Simon, keep in mind though you may want to upgrade down the track to an equatorial mount. the deep space stuff is only alright on the brighter deep space objects. if you think you will seriously get into the deep space photography then you might want to go straight to an HEQ6 and 8" newt. although saying that - nearly everyone upgrades no matter what they choose!

i have since spent a lot more cash on a deep space setup and still have more to go. although my dob won't be a waste as i intend on using it for visual when photographing and maybe some planetary work ... . and its been great to learn which direction(s) i want to take with astronomy.

all the best with your decision
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