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German Equatorial Mountings |
A small overview
I am just putting this comparison together ...
Vixen Celestron (Losmandy) Meade
NP *) GP GP-DX Atlux G9 G11 LXD500B
Weight: kg 3 3.9 8.0 22 7.4 14
Capacity: kg 4.5 8.0 11.0 20 12.0 25
RA Axis
Gleitlager Gleitlager Gleitlager Wheel/Needle Wheel Needle
Material Alu Alu Steel Steel Steel Steel
D mm 25.4/34 52.0 45 .. 62 60 32 32
Materialstrength mm filled ? 9.4 filled filled filled
Length mm ? 141 168 ? ? ?
DEC Axis
D mm 20/32 37 .. 75 35 50 32 32
Materialstrength mm filled 3 3 filled filled filled
Length mm ? 114.5 114.5 ? ? ?
Wormdrive RA/DEC
"Teeth" 144 144 144 240/180 180 360
D(iameter) mm 67 74 74 123/93 71 143
Thickness mm 4 6 6 10 ? ?
Werkstoff Alu Alu Brass Brass Alu Alu
Periodical Error +-16" **) +-13" +-10" +-4" +-7" +-5"
Wormdrive RA/DEC * * * * *
Axis D mm 6 6 6 15 ? ?
Outer D mm 11 11 11 30 ? ?
Material Brass Brass Brass Brass Steel Steel
*) Vixen New Polaris mount - no longer sold in 1998
**) value figured out on my NP mount
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