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00:00 site local. Astronomical dark, moon down. Sun -79°. Moon 1% waning crescent. Median SQM 21.9. No long moonless night in the published window

Book a Night

Chief observer

Tomás Iriarte

Here since
2013
Sessions
3
Log entries
2
Seeing is not the same as transparency and the difference will ruin your night if you ignore it.

Tomás has logged more hours at Umbra's eyepieces than anyone, and keeps the observing log that the journal on this site is drawn from. If a number on these pages describes what a night was actually like, it came from that log.

The photometry programme is a long-running set of measurements on southern Mira variables — unglamorous, cumulative, and the sort of work an observatory this size can genuinely contribute to.

Also the person who collimates Vaciado, which is why it holds.