Good post, the one above. Have had numerous diags, WO quartz dielectric, a gso quartz dielectric, a gso dielectric, and a prostar dialectric, and regular. meade, and a couple of others. Mostly in 2" but a few in 1.25"
Never could really tell the differences between the lot of them, apart from when pollution appeared for cleaning. Beyond that, It's a bit of a wank imho.
All the above have been serviceable and tunable, the meade was the least impressive.
Also had a SW 2" (alleged dielectric) supplied with my SW ED100, it's a touch on the lemon side, just my humble opinion. ramble ramble.. save your hard earned..
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