Spectrometer, Advanced
Vernier reading to 30 seconds of arc. The 175 mm diam. scale is fixed. The table and telescope movements are completely independent of each other and read to 30 seconds of arc using double-ended verniers and magnifiers. Both rotations have fine adjustment screws. Coarse adjustments can also be made by the release of the clamping screw. The collimator is mounted on a fixed pillar and is fitted with a 175 mm fl. achromatic objective with a 32 mm clear aperture and a laterally adjustable slit 6 mm long. The telescope is mounted on a movable pillar fitted with 175 mm fl. achromatic objective of 32 mm clear aperture and x 10 Ramsden eye-piece with a glass cross line graticule. Both the telescope and collimator have rack and pinion focusing and can be adjusted for leveling the axes of both units as well as for adjusting to the axis of rotation. The prism table is marked with lines to assist prism placement and has three table leveling screws. It also has an interchangeable clamping unit for the prism and diffraction grating. Complete with prism clamp, diffraction grating holder, and a Tommy bar for adjusting optical axis. In case.
Description
Vernier reading to 30 seconds of arc. The 175 mm diam. scale is fixed. The table and telescope movements are completely independent of each other and read to 30 seconds of arc using double-ended verniers and magnifiers. Both rotations have fine adjustment screws. Coarse adjustments can also be made by the release of the clamping screw. The collimator is mounted on a fixed pillar and is fitted with a 175 mm fl. achromatic objective with a 32 mm clear aperture and a laterally adjustable slit 6 mm long. The telescope is mounted on a movable pillar fitted with 175 mm fl. achromatic objective of 32 mm clear aperture and x 10 Ramsden eye-piece with a glass cross line graticule. Both the telescope and collimator have rack and pinion focusing and can be adjusted for leveling the axes of both units as well as for adjusting to the axis of rotation. The prism table is marked with lines to assist prism placement and has three table leveling screws. It also has an interchangeable clamping unit for the prism and diffraction grating. Complete with prism clamp, diffraction grating holder, and a Tommy bar for adjusting optical axis. In case.
Additional information
| Description | Vernier reading to 30 seconds of arc. The 175 mm diam. scale is fixed. |
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