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HandyAndy
sage
Reged: 01/11/08
Posts: 444
Loc: West Midlands and around
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Re: The 'Best' telescope and eyepieces
07/03/08 07:12 PM
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Hi,
I am afraid I passed on a quote from Eddgie and your calculations I assume are correct.
I have a sled-focusser in my Celestron/Vixen 6" F5 with a single vane which allows a pretty big illuminated field.
I was not aware the dielectric coating adds a stress to the substrate. When AP bought out their deielectric diagonals they pointed out an aluminised coating consisted of a rough surface of tall crystals. Perhaps it needs an additional burnish like silvering.
Thanks. Andrew.
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Monarch 8x42, Zeiss 10x50 WA
10mm F2, Pentax 60mm F5
City: 7" MN78: MK4#2, 10" F6.3: MK4#1, 16" F5 ParaCorr
Country: 5" F9.5, 8" VISAC: GP2
Car: 6" F5 MPCC: SP, 5" 127mm F7.5
TV 55mm, Paragon 40mm, UO Pretoria 28mm
B&L 32 Pl, Clave's 25, 8, 6, 2x
Hyperions 5, 8, 13, 17, 24, 31
Nagler1 9mm, Meade 14mm 4000 UWA
Antares 1.6x, 0.7x, 0.5x
Edited by HandyAndy (07/03/08 07:44 PM)
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