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