Spectrometer


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Standard Spectrometer

Code: PHLO0233

An economically priced instrument, which is nevertheless capable of much useful quantitative work. The main structural parts, including the collimator and telescope bodies are heavy castings, other metal parts being bright plated. Scale: 170mm diameter, divided 0 to 360° × 1°, independently rotatable with locking screw. A spring-loaded vernier scale attached to the telescope mount provides readings to 0.1° (6 minutes of arc). Collimator: Mounted on fixed pillar with axis adjustment. Objective lens has 150mm FL, an aperture of 21mm and is carried in spiral focusing system. Unilaterally adjustable slit 6mm long. Telescope: Mounted on moveable pillar with adjustment, locking screw and axis adjustment. Objective lens has 170mm FL, 21mm aperture and is carried in a spiral focusing system. Ramsden eyepiece with cross wires and locking ring focus adjustment. Prism Table: The table is provided with three leveling screws and has lined marked to assist placement of prism. Standard Accessories Supplied: 1 prism clamp for prisms up to 40mm high, 1 diffraction grating holder, aperture 25 × 25mm, 1 small screwdriver, 1 tommy bar for axis adjustment.

Specifications:
  • Scale: 170 mm diameter
  • Aperture: 25 × 25 m

Spectrometer, Kirchhoff-Bunsen Type

Code: PHLO0236

For qualitative observation and measurement of emission and absorption spectra. Table unit has fixed optical flint prism with removable cover. Includes swiveling observation telescope with movable ocular, scale tube with reference subdivision, slit tube with adjustable slit. Complete assembly supported on vertical pillarmounted on circular cast metal base.

Intermediate Spectrometer

Code: PHLO0239

This is a robust instrument designed specifically for student use, which nevertheless is capable of very high performance. The main structure is of heavy cast metal, with bright plated fittings. The complete instrument is supplied with wooden case.

Scale:
  • The 150mm diameter circle with protective plastic shield is fixed to the telescope movement and the table is attached to the double ended vernier, which reads to 1 minute of arc.
  • Both telescope and table rotation fine adjustment screws, and release of a clamping screw enables adjustment of both movements to be made by hand.


Collimator:
  • Mounted on fixed and fitted with 178mm focus achromatic
  • Objectives, 25mm clear aperture. Also fitted is a unilaterally adjustable slit 7mm long.


Telescope:
  • Mounted on moveable pillar and fitted with 178mm Focus achromatic objective, 25mm clear aperture.
  • Also fitted is a 8× Ramsden eyepiece and a glass cross line graticule. Both the telescope and collimator have rack and pinion focusing.
  • Means are provided for leveling the axis of both optical units and for squaring them to axis of rotation.


Prism Table:
  • The table is marked with lines to assist placing the prism with respect to the table leveling screws.


Standard Accessories Supplied:
  • 1 Prism clamp, 1 diffraction grating holder, 1 magnifier, 1 tommy bar for djusting optical axis, 1 wooden case.

Advanced Spectrometer

Code: PHLO0242

A precise instrument for measuring the composition of light, determination of refractive index of solids or liquids and exploring other related optical concepts. Allows students to perform prism and grating spectrometry. High quality optics ensures sharp spectral images while precision machining and fitting allows for precise rotation and accurate measurement. The turntable is mounted on heavy bearings and can be rotated about vertical axis. Streamlined body to avoid crevices around fittings. Holding pillars for both, telescope and collimator, of solid metal block to provide ruggedness and durability.

This Advanced Spectrometer has a heavy, sturdy, stable cast metal base, with scratch resistant epoxy-coating. The general finish of the apparatus is similar to that of the intermediate model. The instrument is mounted on a baseboard, which fits into a polished hardwood case.

Scale::
  • Main scale about 150mm in diameter is fixed on the turntable that also holds telescope. Scale is precision engraved 0-360º × ½º, which is further complimented a precision engraved, double ended verniers provides convenient reading with a least count of 30”. Rotations of both the scales, main as well as vernier, have fine adjustment screws, and release of a clamping screw enables coarse adjustment to be made by hand.


Collimator:
  • Mounted on fixed pillar and fitted with 178mm focus achromatic objective, 32mm clear aperture. A unilaterally adjustable slit, 6mmlong is also fitted.


Telescope:
  • Mounted on moveable pillar and fitted with 178mm focus achromatic objective. Also fitted is a 15× Ramsden eyepiece and a cross-line graticule. Both the telescope and collimator provided with rack and pinion type focusing mechanism for ease in operation and precise focusing. Means are provided for aligning the axes of both the optical units and for squaring them to the axis of rotation.


Prism Table:
  • The table is marked with grooved lines to assist placing the prism with respect to the table leveling screws, and has interchangeable clamping units for the prism and a diffraction grating.


Standard Accessories Supplied:
  • 1 Dense Flint Glass prism, 1 Prism clamp, 1 Diffraction grating holder, 1Watchmaker's eyeglass, 1 Tommy bar / L Key for adjusting optical axis of tubes, 1 Polished hardwood case

Spectrometer, Advanced, with Double Vernier

Code: PHLO0245

177mm diameter circle, Allows readings to 30 seconds of arc. This instrument whilst robust enough for individual student use is also intended for more advanced work. The general finish of the apparatus is similar to that of the intermediate model. The instrument is mounted on a baseboard,which fits into a polished hardwood case.

Scale:
  • The 177mm diameter circle is fixed, and the table and telescope movements are completely independent of each other. Both movements can be read to 30 seconds of arc by means of double ended vernier. Both rotations have fine adjustment screws, and release of a clamping screw enables coarse adjustment to be made by hand.


Collimator:
  • Mounted on fixed pillar and fitted with 178mm focus achromatic objective, 32mm clear aperture. A unilaterally adjustable slit, 6mmlong is also fitted.


Telescope:
  • Mounted on moveable pillar and fitted with 178mm focus achromatic objective, 32mm clear aperture. Also fitted is a 15× Ramsden eyepiece and a cross-line graticule. Both the telescope and collimator have rack and pinion focusing. Means are provided for leveling the axes of both optical units and for squaring them to the axis of rotation.


Prism Table:
  • The table is marked with lines to assist placing the prism with respect to the table leveling screws, and has interchangeable clamping units for the prism and a diffraction grating.


Standard Accessories Supplied:
  • 1 Dense Flint Glass prism, 1 Prism clamp, 1 Diffraction grating holder, 1Watchmaker's eyeglass , 1 Tommy bar / L Key for adjusting optical axis of tubes, 1 Polished hardwood case.
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