FLO Posted September 1, 2005 Share Posted September 1, 2005 Hi, I'm curious ... does anyone here use orthoscopic eyepieces :?:Thanks, Steve Link to comment Share on other sites More sharing options...
Ant Posted September 2, 2005 Share Posted September 2, 2005 I don't now steve but I've had a few many many years ago.Why?Ant Link to comment Share on other sites More sharing options...
russ Posted September 2, 2005 Share Posted September 2, 2005 Hi Steve,Yes i use a Celestron 9mm Ortho. Used to have a 6mm and 18mm too. They are all circa 1988 and came with an Orange Tube C8 I bought secondhand in 1990. I replaced the 6mm with a 5mm Lanthanum and replaced 18mm with a 20mm Orion Ultrascopic. Kept the 9mm because it's a really nice eyepiece for planetary views and it's narrow FOV makes it good for getting objects onto the Toucam chip.I wouldn't buy one again because the Celestron Ultima/Orion Ultrascopic/Antares Elite are very nearly as sharp/contrasty but with much improved eye relief/FOV. Basically they perform as well as a Ortho but are very comfortable to use too.Russ Link to comment Share on other sites More sharing options...
FLO Posted September 2, 2005 Author Share Posted September 2, 2005 Why?AntBecause recently I 'discovered' Orthoscopic eyepieces and was blown away I came across two (4mm & 12.5mm) secondhand, really cheap, and decided to give them a try. I was viewing the moon thru my 10" f5 dob' a set of Meade series 4000 Super Plossls and a Meade 13.8 SWA ... when I remembered the orthoscopics. I popped them in and immediately noticed their extra clarity, bite and contrast ... even when compared to the 13.8 SWA. Yes, the field of view is a bit tight but they are sharp right to the edge, the eye-relief is comfortable (I don't wear glasses) and I cannot detect a single optical flaw. For lunar, globulars and planets they are great. I am now slowly building up a collection of orthoscopics - they generally go for around £15 on ebay. Whilst I can see the attraction of 'space-walking' thru the latest wide-field super-dupers ... I cant help but think we have thrown the baby out with the bathwater. Steve Link to comment Share on other sites More sharing options...
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