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O.D. of FS-128 tube?

Started by chasp, 09/27/2003 11:05PM
Posted 09/27/2003 11:05PM Opening Post
Anyone know the O.D. of the Tak FS-128 tube?

Chas P.
Posted 09/28/2003 12:22AM #1

Optical System: Fluorite Apochromat Doublet
Coating: Front Full-Multi-Coated
Aperture: 128mm
Focal Length/Ratio: 1040mm, f/8.1
Light Grasp: 334x
Resolving Power: 0.91"
Limiting Magnitude: 12.3
Image Circle: Ø49mm w/reducer
Photo Field: 3.9° w/reducer
Tube Length/Diameter: 1176mm, 145mm