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Hi Graeme
Just a bit more research...
I note that VTI Optics has the Pentax SMC XF 8.5mm and 12mm Lanthanum eyepieces for around $200 each. They are 18mm eye relief, 60 deg FOV and 150gm weight (relatively light). Although I have no idea how suited they might be for an f/5 Newt, if memory serves me correctly I believe the XF's are highly rated - at least as good as the TV Radians (I've owned a Radian before, a very good eyepiece with very flat field in my f/5 TV Genesis).
Also at VTI Optics, the Explore Scientific 16mm (68 deg FOV) is around $180 and weighs 160gm.
Compare these weights to the Delos 14mm weighing in at 400gm, and the Vixen LVW 13mm weighing in at 390gm.
I realise the Pentax XF and ES 16mm are probably heavier than the Edmund RKE's, but the RKE's I think are more budget, simpler design, and around 45 deg FOV ?
Wavy, is a 150-160gm eyepiece still too heavy for an f/5 Newt?
Cheers
Fox
Last edited by Fox; 06-09-2014 at 01:07 AM.
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