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Takahashi FS-60CB specifications

Optical specifications

Spec. FS-60CB
Optical design Fluorite Doublet
Optical mounting Air spaced (Fluorite in front)
Optical coatings Fully Multi-Coated
Aperture 60mm
Standard
Focal length 355mm
Focal ratio F/5.9
Resolution 1.9"
Limiting magnitude 10.7
Light grasp 73x
Image circle NA
Photo field NA
Backfocus length 162.0mm
With flattener
Focal length 374mm
Focal ratio F/6.2
Image circle NA
Photo field NA
Backfocus length 56mm
With focal reducer
Focal length 264mm
Focal ratio F/4.4
Image circle NA
Photo field NA
Backfocus length 56mm
With C2X Extender
Focal length 710mm
Focal ratio F/11.8
Image circle NA
Photo field NA

Mecanical specifications

Longitudinal view (distance in mm)

Takahashi FS-60CB longitudinal view
Spec. FS-60CB
Tube length 440mm
Tube diameter / with dew tube 80mm / 80mm
Tube weight 1.3kg