Dave Mitsky's Doubles for April

I've uploaded a new sheet with the doubles listed for April 2008/2009, with J2000.0 co-ordinates and SAO numbers added by Herbert Kraus.

I've changed the format to include some extra fields that allow filtering and sorting. I maintain this list using Numbers on a Mac. Unfortunately the formulae to convert the RA/Dec coordinates to numerical values (to allow sorting/filtering) could not be exported, so I've just exported the values. The original Numbers sheet is available.

Worth noting is that the co-ordinates are epoch J2000.0, and many of these stars have high proper motion. Good sky chart software should correct for proper motion, parallax and even precession.

I intend eventually to put these lists in a database, allowing me to use the SAO catalogue to add more data such as proper motion.

I double check the coordinates, but there may be errors. Corrections, criticism and comments are gratefully received.

Dave Mitsky's Double and Variable Stars for February

I've uploaded a sheet to Google docs, with the list of double and variable stars from Dave Mitsky's post to the ever-useful astromart, with details added by Herbert Kraus. I might get around to doing lists for SkyTools Pro and Astromist.