Ultra-Fast Flash Observatory Pathfinder

[1] Instead of turning the whole satellite towards GRB location like the Swift Gamma-Ray Burst Mission (that takes about 100 seconds), UFFO employs a slewing mirror telescope approach – the optical path of the telescope is changed by rotation of motorized mirror within ~1 second after burst was detected.

UBAT is able to localize bursts with an accuracy of 7σ to a region 10 arcmin across in less than one second time and is used as a trigger source for the SMT.

The SMT is a key component of the UFFO - a telescope designed for fast observation of prompt optical/UV emissions of GRB.

SMT consist of the slewing mirror stage, the Ritchey–Chrétien telescope and image processing / motor controlling electronics.

It takes a long time for ground telescopes to focus on the relevant part of the sky after a GRB is registered.