The PI230 receiver is mounted in the Nasmyth–B cabin of the Atacama Pathfinder Experiment (APEX) telescope on the Chajnantor plateau, in Chile’s Atacama region in 2015. It is a collaboration between ESO and the Max-Planck-Institut für Radioastronomie (MPIfR).

It is a 230 GHz dual polarisation heterodyne system with 9.37 mm (32 GHz) bandwidth and 524 288 spectral channels. The receiver covers the spectral window of 1.11 to 1.54 mm (195–270 GHz) and uses a sideband-separating (2SB) type of mixer.

The PI230 receiver is a replacement of the SHeFI/APEX-1 receiver.

PI230 on APEX

This table lists the global capabilities of the instrument.

Location: Chajnantor
Telescope: APEX
Focus: Nasmyth
Type: Receiver
Wavelength coverage:

Submillimetre, 1.11–1.54 mm

Spatial resolution:


Spectral resolution:


First light date: 2015
Science goals:  
Images taken with the instrument: N/A
Images of the instrument: N/A
Press Releases with the instrument: N/A
Data papers:


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  • ESO
  • MPIfR, Germany