PSU Fixed Telescope

• Zenith-pointing operationAvailable (summary)
  The reflector points straight up and never moves. The beam therefore stays on one band of sky, at the declination set by the site's latitude, while the Earth turns.
• Drift-scan observingAvailable (summary)
  As the Earth rotates, the sky drifts through the beam: each fixed telescope maps one band of sky per day. Simple and robust, but the telescope cannot choose where to look. Read the fixed-to-moving story
• SDR-based spectrum acquisitionPlanned
  How the software-defined receiver chain turns the received signal into a spectrum. Detailed PSU description to be added.
• Averaged spectraPlanned
  How many short spectra are averaged into the recorded spectrum, and what the recorded file contains. Detail to be added from the station record.
• Receiver / background response correctionPlanned
  How the receiver and background response were removed from the historical spectra, and what assumptions that involved. Detail to be added.
• Sidereal time and Right Ascension processingExplainer ready · data awaiting ingestion
  How clock time on each spectrum becomes sidereal time and Right Ascension for a zenith-pointing drift instrument. Open Solar Time → Right Ascension
• Limitations that motivated the moving telescopeAvailable (summary)
  A fixed telescope cannot repeat an observation on demand, map a chosen region, or point at a calibration source. These limits led to the steerable DISH222. Continue to the moving PSU telescope

The Data Library catalogues this archive among the project's other datasets, and the PSU fixed archive page lays out the lineage from original spectra to a modern reprocessed archive.