Ukpik: testbed for a miniaturized robotic astronomical observatory on a high Arctic mountain
2012
Mountains along the northwestern coast of Ellesmere Island, Canada, possess the highest peaks nearest the Pole. This
geography, combined with an atmospheric thermal inversion restricted to below ~1000 m during much of the long arctic
night, provides excellent opportunities for uninterrupted cloud-free astronomy - provided the challenges of these
incredibly remote locations can be overcome. We present a miniaturized robotic observatory for deployment on a High
Arctic mountaintop. This system tested the operability of precise optical instruments during winter, and the logistics of
installation and maintenance during summer. It is called Ukpik after the Inuktitut name for the snowy owl, and was
deployed at two sites accessible only by helicopter, each north of 82 degrees latitude; one on rock at 1100 m elevation
and another on a glacier at 1600 m. The instrument suite included at first an all-sky-viewing camera, with the later
addition of a small telescope to monitor Polaris, both protected by a retractable weather-proof enclosure. Expanding this
to include a narrow-field drift-scanning camera for studying extra-solar planet transits was also investigated, but not
implemented. An unique restriction was that all had to be run on batteries recharged primarily by a wind turbine.
Supplementary power came from a methanol fuel-cell electrical generator. Communications were via the Iridium
satellite network. The system design, and lessons learned from three years of operation are discussed, along with
prospects for time-domain astronomy from isolated, high-elevation polar mountaintops.
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