Spektrometer-goniometer SG1800

Spektrometer-goniometer SG1800

The SG1800 spectrometer-goniometer is a measuring device for precisely determining the optical data of prisms. From the measured reflection and transmission angles, the internal angles of a prism or the refractive index of its material can be determined. The observing telescope is steplessly adjustable, has a reticle eyepiece and a vernier reading accuracy of 1 arc minute. Collimator and telescope have a focal length of 178 mm and a clear aperture of 32 mm. The prism is made of flint glass (60°) with a dispersion angle of 2°; the collimator has a symmetrical precision slit of hardened steel.

Technical data

Model

SG1800

Observation tube

steplessly adjustable

Eyepiece

15× reticle eyepiece

Reading accuracy

1 arc minute (resolution 0°0′30″)

Achievable measurement accuracy

± 1′

Focal length of collimator and telescope

178 mm

Clear aperture

32 mm

Entry slit width

0–2 mm

Prism

flint glass 60°, dispersion angle 2°

Height of optical axis above specimen table

0–20 mm

Suitable specimen height

5–50 mm

Specimen table diameter

85.5 mm

Scale diameter

176 mm

Dimensions (W × H × D)

240 × 200 × 560 mm

Weight

9 kg