Globe at Night is an international citizen-science campaign to raise public awareness of the impact of light pollution by inviting citizen-scientists to measure & submit their night sky brightness observations. It's easy to get involved - all you need is computer or smart phone.
Star Walk 2 is an exquisite stargazing app enabling you to explore the night sky through the screen of your device. Make an effortless journey through thousands of stars, comets, constellations, and other celestial bodies. All you have to do is point your device to the sky!
The wheel below shows the entire sky that is visible from Boulder .
Change the limiting magnitude to see more or fewer stars. By clicking and dragging the wheel, you can turn it to place different green compass points at the bottom. The stars at the bottom of the wheel will then match the ones you will find above the horizon in that direction. (online)
interactive star chart
The Night Sky chart contains the same low-distortion two-sided map projection as our plastic planisphere but comes in a 8.5″ x 9″ cardboard format.
With instructions printed on the back for handy reference you will be locating constellations and select deep sky objects within minutes.
*never runs out of batteries, does not interfere with night sky