A Breathtaking Window on the Universe: A guide to the observatory at the Roque de Los Muchachos Posted By sheila on October 30, 2012 The cover for my book Today I sent my book off to the printers. It should be on sale in 3-4 weeks. Posted by sheila Sheila came to La Palma with a six month contract and has stayed 24 years so far. She used to work as a software engineer at the observatory, but now she's a writer and Starlight guide.