Quote:I'm something of a newbie when it comes to guiding so maybe it is possible to guide out such a large error, especially if it's smooth. Just a bit of a eyeopener to me that it's unguided performance should be so inferior to that of a mass-market fork mount.
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Quote:The mass market forkmounts tended to be about that bad out of the box, also. PPEC corrects it - but for that to happen one must have guiding set up perfectly, to make the training valid. If PEC fails to improve PE then either the error is NOT PE or PEC training wasn't effective.
Quote:30 seconds peak-to-peak?! Surely that PE is untrained? ... I would be very suprised if a modern GEM couldn't manage at least that.
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TS 130/912 (f 7.10) Triplet Apo Refractor TS 152/1200 (f 7.90) Achromatic Refractor Astrologers say the future is written in the stars but Astronomers know this more so applies to the past... http://www.flickr.com/photos/72473941@N03/