For Bentham Instrument's latest COVID-19 update please click here.

TEL301 Direct View Telescope

  • TEL301 telescope with aperture range and macro lens
  • TEL301 radiant intensity and luminous intensity telescope
  • TEL301 telescope with range of coupling options

The TEL301 has options on working distance and is supplied with a range of apertures to define the area of the source measured.

The addition of a DH400-VL photometric detector and the ORM400 picoammeter turns the TEL301 into a versatile luminance measuring spot meter.

Core benefits

Features

  • Direct view telescope
  • Four interchangeable apertures are supplied giving angular fields of view (fov) at 6', 20', 1° and 2°
  • Linear coverage at a distance D is: 2D tan (FOV/2)
  • A range of coupling options

Optical

Lens Description Wavelength Range Focusing Range
TEL301_LENS_TL-MACRO TL macro lens 350-3000nm 25mm
TEL301_LENS_TL1-ACH-VIS TL1 VIS achromat lens Optimised for 350-800nm 1m-infinity
TEL301_LENS_TL1-ACH-NIR TL1 NIR achromat lens Optimised for 600-1300nm 1m-infinity
TEL301_LENS_TL1-ACH-IR TL1 IR achromat lens Optimised for 1000-1700nm 1m-infinity
TEL301_LENS_TL1-Q TL1 UV quartz lens 200-2500nm 1m-infinity
TEL301_LENS_TL2 TL2 close-up lens 350-3000nmm 150mm
TEL301_LENS_TL2-ACH TL2 close-up achromat lens Optimised for 400-700nm 150mm
TEL301_LENS_TL2-Q TL2 close-up UV quartz lens 200-2500nm 150mm

Mechanical

Dimensions
Compatibility 1/4" threaded hole to mount to tripod

Coupling options

TEL301_DIRECT TEL301 direct-view telescope, slit mounting
TEL301_SMA TEL301 direct-view telescope, SMA fibre output
TEL301_FOP_ADAPTOR Adaptor to TEL301_DIRECT for fibre bundle coupling

Lens options

Lens Description
TEL301_LENS_TL-MACRO TL macro lens
TEL301_LENS_TL1-ACH-VIS TL1 VIS achromat lens
TEL301_LENS_TL1-ACH-NIR TL1 NIR achromat lens
TEL301_LENS_TL1-ACH-IR TL1 IR achromat lens
TEL301_LENS_TL1-Q TL1 UV quartz lens
TEL301_LENS_TL2 TL2 close-up lens
TEL301_LENS_TL2-ACH TL2 close-up achromat lens
TEL301_LENS_TL2-Q TL2 close-up UV quartz lens

Ordering information

TEL301_DIRECT TEL301 direct-view telescope, slit mounting
TEL301_SMA TEL301 direct-view telescope, SMA fibre output
TEL301_FOP_ADAPTOR Adaptor to TEL301_DIRECT for fibre bundle coupling
TEL301_LENS_TL-MACRO TL macro lens
TEL301_LENS_TL1-ACH-VIS TL1 VIS achromat lens
TEL301_LENS_TL1-ACH-NIR TL1 NIR achromat lens
TEL301_LENS_TL1-ACH-IR TL1 IR achromat lens
TEL301_LENS_TL1-Q TL1 UV quartz lens
TEL301_LENS_TL2 TL2 close-up lens
TEL301_LENS_TL2-ACH TL2 close-up achromat lens
TEL301_LENS_TL2-Q TL2 close-up UV quartz lens

Share this:

The Bentham Standard

We’re with you from the first call to the final result

Call us on +44 118 975 1355 or email us

You are currently offline. Some pages or content may fail to load.