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Transit Method
Transmit method: Apparent Brightness plotted vs Time
Description
The transit method for detecting exoplanets orbiting a star is demonstrated.
Purpose
To plot the detected intensity of a light source(star) as a function of time as an orbiting body(exoplanet) periodically comes in between the light source and the detector.
Apparatus
- Vernier LabPro Interface (plus USB cable to a computer and a power supply for the interface).
- Vernier LabPro light detector to use with the interface.
- LoggerPro installed on a computer that the interface will connect to via USB cable.
- Glass light diffuser and light source.
- Model exoplanets on supports.
- Assorted clamps, rods and mounting supports.
- Extension cord for the light source.
- Motorized rotating table with appropriate power supply and electrical connections.
- Black cloth to cover the table.
Setup
Suspend the diffuse light source above the rotating table. Attach a model exoplanet to the rotating table. The light sensor can be placed such that when the table rotates a periodic decrease in the intensity is observed.
Notes
This demonstration was originally a PHYS 420 project. Please see the dedicated PHY420 page: https://phys420.phas.ubc.ca/p420_2022/ezezenth/
This setup has many pieces and the setup is involved and potentially needs more than one person. Please give plenty of advance notice of when the demo is needed and what room it will be needed in.
A computer is needed that has LoggerPro installed. Please speak to the demo room assistant if LoggerPro is desired on your personal laptop. Henn 200, 201, 202 and Hebb Theatre (Hebb 100) have LoggerPro installed on the Room PC.
Demo room information
| Location | Hebb 100a on shelf next to the personal desk |
| Maker | Unknown |
| Current State | Working |
