Quote:
Originally Posted by Poita
I'm interested in any poor reports as a mate of mine is seriously considering the 16" model.
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The whole point is that on cheaper mass produced instruments there is much greater spread of quality. You would have to be thinking wishfully to that one report ( good or bad ) had any statistical meaning. Ten might start to give you a good idea. These optical systems do not come with a any guarantee certificate nor are the optical pieces even serialised.
On the Newts GSO website states better than +/- 1/12 wave surface RMS which is about 1/3 wave wavefront if talking basic spherical correction- I have tested ones much better than this and some worse. But I can guarantee the only thing that stick in the mind of readers is the 1/12 wave bit !
If you buy a high end system like RC Optical you will get an interferogram and an optical certificate of guaranteed performance. Thats what I would call piece of mind.
If you can star test a telescope to weed out a lemon and up to making mechanical mods needed then the cheap RC's would seem worth a look.