[Aavso-photometry] M67 in color

[Tim Hager]

     Rob Gendler has just posted a beautiful color image of M67 on his
website at: http://www.robgendlerastropics.com/M67.html .  If it doesn't
ring a bell for you, this is the cluster that many of us of us use to
calculate our transformation coefficients each spring.  Now you can really
see that those stars do have different colors!  Note especially the bright
red and blue pair to the lower right of the "dipper asterism".  It was fun
for me to dig out the color indices of the cluster stars and compare them to
what they look like in Rob's image.

....Tim