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Old 20-12-2018, 05:44 AM
jamespierce (James)
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jamespierce is offline
 
Join Date: Jul 2009
Location: Australia
Posts: 321
I wrote a really long reply to this thread. Then lost it - so here's the short version.


Obsessions are good scopes with a few features now which are dated and can be improved on (pole blocks, pole UTA clamps and mirror support sling). Peter at SDM has continued to evolve and improve the design, including refreshing Obsessions - he's also local here in Australia.


Big telescopes have heavy mirrors. That makes them heavy no matter what design. Yes, there are some very impressive carbon fibre designs comming out of europe but they have their own set of compromises.


I've had the luxury of looking through a pretty good number of very large telescopes. You want a big scope to be over built, not underbuilt. Consistent mirror support, holding collimation and pointing accuracy all get more challenging at scale.
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