Quote:
Originally Posted by Slawomir
Interestingly, Astro Physics has currently limited its range of telescopes to just...two: 130mm triplet and 305mm RH.
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Yes that seems to be the case Slawomir. The 305RHA is only every now and then. Perhaps a run of about 12-14 every year? The 130 must be popular and relatively easy to make and less wastage of glass from defective blanks form OHara Glass.
The 130 interestingly now has an element with Lanthanum in it. This must be the new fluorite and a step between regular glasses and FPL53.
Greg.