The 24-in telescope at Wallace is an Ealing "24-in Research Cassegrain Coudé" reflector on an asymmetric German equatorial mount. The optical specifications are as follows: D=600.075mm, F=9360mm, f/15.6, as measured after the recent refurbishment in 2009. The image scale is 22.04 arcsec/mm at its Cassegrain focus. The 24-in telescope was built as the centerpiece of the observatory in 1971. In its Cassegrain configuration it's been the telescope most used for research at Wallace and several papers and theses have been published using data obtained with it. The mirror was recoated in 2009 and the control system was reworked in 2013 by Tim Brothers and Dan Gray of Sidereal Technology ("SiTech").  

The Wallace telescope control system has undergone many evolutions.  We are currently migrating from SiTech to an Astrometric TCS system.  We hope to have the telescope back online in late 2026.

There are four 14-inch telescopes (Celestron C-14's of both the 1970's "orange tube" variety and 2 new EdgeHD versions) in the Shed. One is mounted on a new equatorial mount, the other three are mounted on German equatorial mounts. All four have idential detectors and mostly identical filter sets. The roll-off roof building, affectionately refered to as "the Shed," was built in 1984. The "orange tube" C-14's were refurbished in ~2016 and still produce excellent images and science data. The most recent upgrade is a new refractor mounted to Pier 1. This will provide a new capability at Wallace for super wide field imaging. This 90mm Astro-Tech refractor has two focal length settings depending on whether the observer utilizes the focal reducer. The refractor's filter wheel contains a set of Sloan filters for photometry.

The most recent update in the Shed is the upgrade from CCDs to modern CMOS detectors.  These new detectors have significantly less noise, dark current and much improved quantum efficiency.  We also upgrade Pier 4's mount to a Taurus 400 equatorial mount.    

F=530mm f/6

or F=432 f/4.8