Takahashi - Epsilon 180 Optical Tube Only

EPSILON-180ED F/2.8

Takahashi will introduce to the market the Epsilon-180 f/2.8 late this summer.

This first addition to the new Epsilon Series introduces the newly designed ED corrector and fast
speed of f/2.8.

This fast field photo visual astrograph is perfect for the new mega pixel digital 35mm cameras
and CCD cameras. The great speed will enable the imager to record faint nebulosity’s invisible in
slower instruments.

The appreciably shorter exposure times reduce tracking error and will produce very small stars.
The E-180 will produce 10 micron star across the entire flat field.

E-180 Hyperbolic Flat-Field Astrograph 

SPECIFICATIONS for the E-180 (Tube assembly only)

Effective aperture 	180mmØ diameter
Primary mirror 	190mmØ diameter
Secondary mirror 	80mmØ diameter
Effective focal length 	500mm
Effective focal ratio 	f/2.8
Image circle 	44mmØ diameter
Image across field 	10 microns
Metal back distance 	56mm
Diameter of main tube 	232mmØ [9.13”]
Length of main tube 	570mmØ [22.44”]
Weight of main tube 	10kgs. [22lbs.]