Articles by Charles
155 articles
What's up in Durango Skies
Deep-sky astrophotography requires accurate focus, tracking
What's up in Durango Skies
How deep-sky astrophotography works at the Old Fort Lewis Observatory
What's up in Durango Skies
Comet Borisov visits from outside solar system
What's up in Durango Skies
Great Square defines Pegasus in the autumn sky
What's up in Durango Skies
Find some of the oldest stars in globular clusters
What's up in Durango Skies
Discover gems inside night sky’s flying swan
What's up in Durango Skies
Hubble palette reveals glowing clouds of gas
What's up in Durango Skies
Try this exercise to see how far the moon is from Earth
What's up in Durango Skies
Find Jupiter to track down the night sky’s scorpion
What's up in Durango Skies
Gauge the temperature of a star by its color
What's up in Durango Skies
Absolute magnitude allows us to compare luminosity of different stars
What's up in Durango Skies
Variable stars help us measure distance in space
What's up in Durango Skies
Find Perseus, the classic Greek hero in the night sky
What's up in Durango Skies
This asterism is a highlight of the winter sky
What's up in Durango Skies
Mars landing a remarkable feat of space flight
What's up in Durango Skies
Get away from blue light to see the Pleiades
What's up in Durango Skies
Binoculars let the light in on the night sky
What's up in Durango Skies