Takahashi Epsilon 180 ED f/2.8 Newtonian Astrograph Reflector OTA
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Takahashi Epsilon 180 ED f/2.8 Newtonian Astrograph Reflector OTATakahashi Epsilon 180 ED f/2.8 Newtonian Astrograph Reflector OTATakahashi Epsilon 180 ED f/2.8 Newtonian Astrograph Reflector OTA
Takahashi Epsilon 180 ED f/2.8 Newtonian Astrograph Reflector OTATakahashi Epsilon 180 ED f/2.8 Newtonian Astrograph Reflector OTA

Takahashi Epsilon 180 ED f/2.8 Newtonian Astrograph Reflector OTA

£4,710.00✓ 2 year warranty

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About this product

Model:  tak_tek18010
Part Number:  TEK18010

Takahashi Epsilon 180-ED f/2.8 Newtonian Astrograph Reflector.

Takahashi's high-speed Epsilon-180 ED is a super-fast astrograph telescope with a wide flat field that can be used with sensors as large as 24x36 (35mm), 6x6, and even 6x9! 

Stellar images of less than 20µ can be recorded, highlighting this telescope's extreme accuracy. 

Hyperbolic Newtonian Design

The Epsilon-180ED (D=180mm, F/2.8) is a catadioptric reflector with a hyperbolic primary that works together with a doublet field corrector (integrated into a Rack & Pinion focuser) to provide a large, perfectly flat field. 

The optical tube assembly delivers an image with remarkably high contrast, even with stars at the field's edge.

Photographic qualities aside, the Epsilon-180ED is also an excellent choice for wide-field observation. The views of stellar fields, star clusters and galaxies are spectacular.

The spot diagram attests to the near-perfect field correction across the entire image circle.

Coma is exceptionally well controlled, even in the periphery, and the doublet corrector is virtually free of chromatic aberration.

Mechanics

The Epsilon-180ED body is manufactured to a very high standard to complement its optics. The rack-and-pinion focuser has a rotary system for framing, and an optional microfocuser 'MEF-1' is available.

The package version includes a Tube Holder, 7x50 Finderscope and Bracket.

Collimation

The procedure for collimation is less rigorous than that for a Cassegrain-like optical design, so collimation on a star will not be necessary. Takahashi has designed a simple collimation eyepiece designed with the Epsilon-180ED in mind. Reference marks represent the optical axis on the two mirrors, and the primary mirror cell is equipped with three 'double-action' collimation screws (push/pull). Moreover, the three screws have counter-nuts that adjust the pressure under the primary mirror to minimise stresses arising from temperature change. You can collimate your Epsilon-180ED during the daytime, which is convenient. 

 

Telescope Field of View Simulator

Mechanical

  • Tube length: 570mm

  • Tube diameter: 232mm

  • Tube weight: 10.7 kg

System Charts

 

 

What's in the box

OTA Only Includes:

  • Epsilon 180-ED OTA

OTA Package Includes:

  • Epsilon 180-ED OTA
  • TKA00552Y Finder 7 X 50 orange
  • TKA00563B Black finder bracket
  • TKA68420S Tube holder (double) with top plate to be used with TMP02300

Specifications

Spec. Epsilon-180ED
Optical design Hyperbolical Newton
Effective aperture 180mm
Primary mirror diameter 190mm
Secondary mirror (minor axis) 80mm
Standard
Focal length 500mm
Focal ratio F/2.8
Resolution 0.64"
Limiting magnitude (visual) 13.0
Light grasp 661x
Image circle 44mm (60% not vignetted)
Back focus (BFL) 56mm (from the end of the corrector)
Photographic assembly M54mm female on the corrector (for wide T-mount)

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