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Using the Transit
David White Instruments Realist TR-300 4.5" Transit
Vertical circle&
vernier
Plate levels
Capstan screws:
top
bottom
Horizontal circle &
vernier
Leveling screws
Upper clamp &
tangent screw
Telescope in
normal reading
orientation
Cross-hair focus
Compass
Upper tangent
screw
Upper clamp
Vertical clamp
Focus
Vertical tangent
screw
Lower clamp
& tangent screw
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Related Manuals for David White Realist TR-300 4.5
Summary of Contents for David White Realist TR-300 4.5
- Page 1 Using the Transit David White Instruments Realist TR-300 4.5" Transit Telescope in normal reading orientation Cross-hair focus Vertical circle& vernier Plate levels Compass Capstan screws: bottom Upper tangent screw Horizontal circle & vernier Upper clamp Leveling screws Vertical clamp Focus...
- Page 2 Checklist • Transit in orange box. In the case should also be • a plumbob and a 5/64" drill bit or the original adjustment tools • a magnifying glass for reading the vernier • Tripod with 8.5 cm wide screw-on mount. •...
- Page 3 tangent screw, and then center the bubble by using the two leveling screws. Rotate the telescope again 180° in azimuth. The bubble should remain centered. If it does not, repeat the process of bringing it halfway to center with the tangent screw and the rest of the way with the leveling screws.
- Page 4 Reading horizontal azimuths From now on when you rotate the telescope with the upper clamp open, or fine adjust the upper tangent screw, you'll get readings in azimuths. You can get angles by subtracting one angle from another. Reading vertical angles Also uses a vernier to get degrees and minutes.
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