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Ajohnw	22/01/2016 20:23:45
3631 forum posts 160 photos	You might find a microscope graticule eyepiece useful Neil. 10x should have a focal length of 25mm. (250mm/X) They come in 2 sizes the smaller one will have a field of view of around 18mm or so. They tend to be a lot cheaper than astro eyepieces with them. This one is high eyepoint as well 261904055261 but the ordinary ones are ok. John -
Neil Wyatt	22/01/2016 20:48:36
19226 forum posts 749 photos 86 articles	I've got a cheap Bresser 20mm here which will give me a neat 9x. I have to decide whether or not to butcher an old 50mm x 300mm scope - it has a 0.925" barrel with rack & pinion but I can bodge the eyepiece to fit. Trouble is that although the scope is an old cheapy, taking it apart shows it has a lovely coated airspaced achro doublet - it's just too long an FL for a finder. If I cut off a big chunk of the barrel it will spoil it as a 300mm scope :-/ Neil
Ajohnw	22/01/2016 22:25:59
3631 forum posts 160 photos	You could just use rigid plastic plumbing pipe Neil. I'd buy a piece of tube. I would have thought there would be a metal supplier around where I think you are - near Burton on Trent? John -
Neil Wyatt	23/01/2016 09:27:15
19226 forum posts 749 photos 86 articles	Yes, thought of that - annoying how much I've thrown away over the years! I need a new toilet flush handle and one from the bay shows no signs of appearing so off to Wickes today..

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