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  #21  
Old 02-02-2014, 08:25 AM
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Logieberra (Logan)
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Baader??? Contact AP or SB direct and get a quote! Their front office staff do a wonderful job. They coordinate it all, including VERY competitive international shipping.

But, no question, purchasing via a local distributor does have its perks too... By the time you factor in duties/taxes, the differences in price may be negligible, and a local purchase does include the full range of consumer protections.

Last edited by Logieberra; 02-02-2014 at 08:38 AM.
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  #22  
Old 02-02-2014, 11:00 AM
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Peter Ward
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Just to give these numbers a real-world perspective, while my PME has a PE of around +/- 2.5 arc sec, when guiding at 1 second intervals, I typically see RMS pixel errors of 0.18 on Dec and 0.2 in RA

That's about 0.3 arc sec for the focal length I'm currently using. This is well below the 2-3 arc sec seeing I get most nights....any is pretty typical for most sea-level locations in Oz.

Would an RA drive pottering along with a 0.2 arc sec error make a difference?

I seriously doubt it, as (A) you haven't solved any Dec dift, and (B) the geometric arc your RA axis is drawing in the sky is unlikely to be perfectly following the path refracted starlight is taking.

Hope that helps.
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  #23  
Old 02-02-2014, 11:03 AM
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Peter Ward
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Quote:
Originally Posted by Logieberra View Post

But, no question, purchasing via a local distributor does have its perks too... By the time you factor in duties/taxes, the differences in price may be negligible, and a local purchase does include the full range of consumer protections.
Some local dealers have been known to charge exactly the same as directly importing it yourself (ie, US list, shipping, customs and GST )

Last edited by Peter Ward; 03-02-2014 at 12:10 AM. Reason: typo
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  #24  
Old 02-02-2014, 09:10 PM
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gregbradley
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But then Europe/UK gets hit hard on all the prices for just about gear don't they?

Camera prices in UK are always super high I notice.

Greg.
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