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Using iOptron HAE29 in EQ mode mount for astrophotography

Astrophotography EQ
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4 replies to this topic

#1 jmerran

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Posted 19 September 2023 - 08:31 AM

New in astrophotography. What would be the maximum exposure time with this mount in EQ mode to get acceptable deep sky objects pictures like galaxies...? 



#2 Tapio

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Posted 19 September 2023 - 08:36 AM

These strainwave mounts have large periodic error which means that without autoguiding really short (even with short focal length).

With autoguiding there's no limit.


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#3 jmerran

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Posted 19 September 2023 - 09:44 AM

Thank you for your response.

Before I purchased the HAE29 mount I used the iOptron Alt-Az Pro mount to take picture (750 pictures) with 8s exposures. Result was poor but it was a first satisfying experience. Could I go as far as 60s exposure with the HAE29 without autoguiding ?



#4 Tapio

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Posted 19 September 2023 - 11:11 AM

Like I wrote these mounts have large periodic error. It's worse than most traditional mounts - including Alt-Az Pro.

They really need active (and short exposure) guiding.



#5 Andros246

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Posted 19 September 2023 - 12:04 PM

Thank you for your response.

Before I purchased the HAE29 mount I used the iOptron Alt-Az Pro mount to take picture (750 pictures) with 8s exposures. Result was poor but it was a first satisfying experience. Could I go as far as 60s exposure with the HAE29 without autoguiding ?

Depends on what FL you have the longer the FL the more the periodic error is noticeable. 

 

I've never owned one but i'd be happy with 30 second subs without autoguiding because anything over 30-45 seconds the gains are negligible (under most circumstances) and more heavily depend on your ability to process.


Edited by Andros246, 19 September 2023 - 01:20 PM.



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