Markree Observatory
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Markree Observatory was an astronomical observatory in County Sligo, Ireland. The asteroid 9 Metis was discovered from this observatory in 1848 by Cooper's assistant Andrew Graham using a comet seeker
![William Doberck [sv] using the refracting telescope at Markree Observatory](https://upload.wikimedia.org/wikipedia/commons/thumb/f/f1/August_William_Doberck_Markree_refracting_telescope_13%2C3-inch_Cauchoix_objective_darker.jpg/500px-August_William_Doberck_Markree_refracting_telescope_13%2C3-inch_Cauchoix_objective_darker.jpg)
William Doberck [sv] using the refracting telescope at Markree Observatory
The entrance gate
Andrew Graham (astronomer)
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Andrew Graham was an Irish astronomer, orbit computer and discoverer of the asteroid 9 Metis.
Markree Observatory
…undoubtedly the most richly furnished private observatory known – is worked with great activity by Mr Cooper himself and by his very able assistant, Mr Andrew Graham." (Royal Astronomical Society, 1851) In 1848, Cooper's assistant, Andrew Graham, discovered the asteroid 9 Metis with a wide-field comet seeker telescope…
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