Double Star (M40) – Deep Sky Videos

Posted on 2012/12/29

The optical double star M40 is perhaps the biggest disappointment in Messier’s Catalogue – so we’ve used our own star to liven up the video with a cameo from Sir Patrick Moore.

Also featuring Mike Merrifield and Pete Lawrence. Details on our speakers at

Also thanks to Fred Espenak:

Deep Sky Videos website:
Flickr: http:[email protected]/
More about the astronomers in our videos:

Videos by Brady Haran
Additional filming and editing in this film by Stephen Slater

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