Blood Moon

The Moon blood red because it's completely inside the Earth's shadow.
August 21, 2015

Total Lunar Eclipse April 15th 2014, as seen from the Mount Lemmon SkyCenter. In the early hours of September 28th the moon will plunge into the Earth’s shadow and turn blood red. It’s a perfectly normal event, produced by the combined orbits of the earth and moon and the effect of the Earth’s atmosphere bending the sunlight like a lens, but it’s dramatic and spooky, and if you didn’t…


Coming Soon

Sheila Crosby filling an instrument with liquid nitrogen in the Isaac Newton Telescope in 2003, with protective clothing.
January 13, 2012

  My ebook, “A Breathtaking Window on the Universe: a guide to the Roque de Los Muchachos Observatory” will be on sale in few months. It explains why the observatory is on La Palma and how a telescope works, and gives details of each telescope, plus many anecdotes and over 60 photos. You can get full details on this site as soon as they’re available.