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Module

Observing

What to do once it is built and the software runs.

10 lessons, in the order they are meant to be worked through

Two observers running a horn telescope from camp chairs in a field.

Once your horn and receiver work, these lessons introduce observing. Learn site selection, pointing, spectrum assessment, calibration against a known load, and interference recognition.

The telescope works in rural and urban locations with open sky. It also works in daylight and rain. Radio astronomy is not a clear-night hobby.

The module ends with two extensions to single-horn observing. First, turn drift scans into a sky map and rotation curve. Then add a second horn to make an interferometer.

Two operating procedures are documented as PDFs rather than as lessons:

For what an interferometer is actually good for, see Interferometry in the Astronomy module.

10 lessons in this module

  1. What is a Horn Telescope?

    Overview of what makes up a horn telescope and what it detects

  2. What Can a Horn Telescope Measure?

    An overview of what a horn telescope detects

  3. Setting up the Telescope

    Details on setting up the telescope for use

  4. Horn Telescope Spectrometer Description

    Description of the spectrometer_w_cal.grc program features

  5. Running the spectrometer_w_cal.grc Program

    Instructions on how to use the spectrometer_w_cal.grc program in GNU Radio

  6. Instructions on Running spectrometer_w_cal

    Instructions on how to use the *spectrometer_w_cal* program

  7. How to Calibrate the Horn Telescope

    The procedure for calibrating the telescope using the spectrometer_w_cal program is outlined.

  8. Horn Operation Tutorials

    Documents and videos explaining the operation of the horn telescope

  9. Observations - Mapping the Sky and Measuring the Rotation Curve

    Reduce the data your telescope produces - a drift map of the sky, and the rotation curve of the Milky Way

  10. Setting Up a 2 Horn Interferometer

    Details of setting up 2 horns for doing interferometry

All lessons