IOM March 2010 – Regulus in Leo

This month’s imaging object is a single star shot – this time I’ve gone for Regulus in Leo.  A nice bright star central to an image can make a spectacular picture, and Regulus is no exception.  Taken using the Sky 90 and M25C with 4-minute subs and a couple of hours total exposure time, this is the sort of result you can expect.  However – what I didn’t expect was to see a trace of the dwarf galaxy Leo 1, which looks like a tiny wisp of a cloud right next door to Regulus!  This was pretty much unexpected and I believe it is due to the superb contrast provided by the Sky 90 – I can guarantee that I wouldn’t be able to see Leo 1 in a similar Hyperstar III image.  It would be interesting to know whether you can pick up Leo 1 using reflectors and CCD cameras with Regulus providing it’s own unique form of  “light pollution” in this region.

Recipe for a Regulus/Leo 1 image – good dark (Moonless) night, high contrast imager (refractor), moderate length subs, but lots of them – and possibly some good luck 🙂

Until April’s IOM – clear skies!

This entry was posted in IOM. Bookmark the permalink.

Leave a Reply

Your email address will not be published. Required fields are marked *