Two-Channel Hβ Photometer at the Danish 0.5-m

Danish 0.5-metre telescope

The Two-Channel Hβ Photometer was mounted at the Cassegrain focus of the Danish 0.5-metre telescope at La Silla Observatory in the late 1970s. The two channels allowed simultaneous measurements of the Hβ line through narrow (HβN) and wide (HβW) filters and the light was collected by two photomultipliers. The two channels of the photometer also even made it possible to observe through clouds on moonless nights.

Two-Channel Hβ Photometer

This table lists the global capabilities of the instrument.

Location: Decommissioned
Telescope: Danish 0.5-metre telescope
Focus: Cassegrain
Type: Photometer
First light: Late 1970s
Science goal:
  • Star Photometry
Images taken with the instrument: N/A
Images of the instrument: Link
Press Releases with the instrument: N/A
  • ESO