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This is how the COATLI telescope looks in 2018. We’ve removed the primary mirror covers to reduce wind shake. Because of this, we now park the telescope pointing to the northern horizon, to keep dust off the mirrors.

Carlos Tejada cleaning the primary mirror with CO2.

The interim instrument, a simple CCD imager with a filter wheel.

The COATLI telescope with Orion in the background.

The COATLI enclosure (right) and the 84-cm dome (left) seen from the south.

COATLI at sunset.

Inspecting the telescope and platform at sunset.

The enclosure open and the telescope taking flats.

Rosalía Langarica-Liebre (left), Alan Watson (center), and Fernando Ángeles (left) adjusting the telescope balance on the mount.

Alan Watson (left) and Carlos Tejada (right) inspecting the filter wheel prior to installation.

Josef Huber (left) and Carlos Tejada (right) performing a coarse alignment of the telescope.

Lifting the telescope onto the platform.

Mating the platform to the tower.

Lifting the platform onto the tower.

Assembling the steel tower and platform.

The installations in May 2016.

The telescope pier in February 2016.

Salvador Cuevas (right) and Oscar Chapa (left) inspect the eventual COATLI site during the site selection process in May 2014. The site is on a rocky outcrop to the south of the existing 84-cm telescope. The white mast is for the observatory’s all-sky camera.