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JMI 2" Newtonian Crayford Focuser EV-3

Name: JMI 2" Newtonian Crayford Focuser EV-3
Brand: JMI Telescopes
SKU: EV-3N
Price: 499 EUR

The JMI Standard Event Horizon Telescope Focuser for Newtonians is a low-profile, friction-drive focuser designed for both the amateur and professional telescope market.

Fine adjustment and no backlash due to Crayford design

Lifts up to 4 pounds

Suitable from 7.25" (184.12 mm) tube diameter

Low-profile allowing for working with smaller secondary mirrors

Compression ring against clamping marks

Manufacturer: JMI Telescopes

Product number: EV-3N

EUR 499,00

incl. 19 % VAT (DE)

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excl. 6.95 € shipping costs (DE)

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JMI 2" Newtonian Crayford Focuser EV-3

The JMI Standard Event Horizon Telescope Focuser for Newtonians is a low-profile, friction-drive focuser designed for both the amateur and professional telescope market.

Fine adjustment and no backlash due to Crayford design

Lifts up to 4 pounds

Suitable from 7.25" (184.12 mm) tube diameter

Low-profile allowing for working with smaller secondary mirrors

Compression ring against clamping marks

Details..
Technical data..
In the box..

JMI 2" Newtonian Crayford Focuser EV-3

The Event Horizon EV-3 is a 2" black-anodized aluminum focuser with knurled knobs. The focuser lifts up to 4 pounds. Manual control is over 1.5 times finer than most rack-and-pinion focusers.

The focuser includes a compression ring in the drawtube for holding telescope eyepieces and accessories without scratching the equipment. The adjusting screw presses against the ring which tightens around the eyepiece or accessory.

The Newtonian version (EV-3n) mounts on a range of surfaces from a 7.25" diameter, or larger, tube to a flat surface.

Design:	Crayford focuser, single speed
Receptacle size:	2"
Clamping:	Via compression ring
Designed for telescopes:	Newtonians
Suitable for tubes:	from 7.25" (184.12 mm) diameter to flat surface
Diameter of the drawtube:	3" (approx. 76 mm)
Payload:	4 lbs (1.8 kg)
Minimum height:	2.3" (58.5 mm)
Drawtube travel:	1.7" (43 mm)
Material:	Aluminum, anodized
Spacing of mounting holes:	2.75" (69.85 mm), square layout
Focuser weight:	18 oz (510 g)