This picture of open cluster M39 is a combination of 33 dithered frames in
BVR colors taken with the Mosaic camera at the WIYN 0.9-meter telescope on
Kitt Peak, near Tucson, Arizona, on the night of September 15th, 2003.
This camera uses eight separate CCD detectors to cover a large area of the
sky, but requires small dither motions between multiple exposures to fill
in the gaps between the individual chips.
Credit: Heidi Schweiker/NOAO/AURA/NSF
IR image of open cluster M39 in Cygnus, taken with the 2MASS IR telescopes. This is a false-color IR image coding different IR wavelength bands into colors, with coolest/longest red and "hottest" or warmest/shortest blue.
Last Modification: November 14, 2004