Posted by David Mottershead at 20:03 on 2012 Jul 17
I’m not 100% as Orion Optics UK describe their Hilux coatings as ‘Advanced Aluminium’and ‘AR’, but I can’t find anything that says whether they are dielectric or not. The contact given for optic enquiries is john@orionoptics.co.uk so might be worth contacting them to enquire.