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  #1  
Old 13-03-2018, 07:32 AM
benklerk
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Join Date: May 2008
Location: Katoomba
Posts: 173
Rowan Heq5 Pro belt mod

Hi Guys

I been looking into the HEQ5 belt mod upgrade from Rowan to get better tracking and making it quieter. I know I will need the Pinion Extractor Tool.

Just asking for people who have done the upgrade, how much improvement is there?What your longest exposures you can do? I can currently get 10min as the longest I can get.

Also is there a place over here I can get them from or do I need to order it from overseas? If overseas did you get it from Rowan's website or from a shop?

Ben
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Old 13-03-2018, 07:53 AM
garymck (Gary)
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Join Date: Aug 2005
Location: Geelong
Posts: 648
Hi,
I did the Rowan belt mod to my HEQ5 (bought new last year). Results were that my pe was cut by more than half to now around 12 arc secs. My guiding figures are between .5 and ,9 arc secs rms depending on seeing.Don't recall what they were before - obviously bad enough that I wanted to do the mod:-) Much quieter than before. The mount now performs like a champ, and am extremely happy with it. I don't know the longest exposure I could take, but I do use up to 10 minutes at the moment.

I did find that belt tension was critical to getting good results, and I had to use more tension than Rowan seems to recommend.

I bought direct from Rowan.

You definitely need the pinion extractor, otherwise fitting is a piece of cake with excellent instructions.

Hope this helps
cheers
Gary
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  #3  
Old 13-03-2018, 05:21 PM
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jwoody (Jeremy)
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Join Date: Aug 2011
Location: Ormeau Hills, Australia
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I did the mod too and while I don't have before and after numbers I can get 30 minute exposures at a focal length of 420mm.
I must admit though even before the mod I could get really long exposures with my mount, must have got a really good one?

Jeremy

Last edited by jwoody; 13-03-2018 at 09:20 PM. Reason: spelling
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