Bortle Scale
The Bortle dark-sky scale is a measurement of light pollution based on the visibility of the night sky. It spans a range of classifications from 1 to 9, 1 being a perfectly clear dark sky with the Milky Way shining, 9 being an inner-city level light polluted sky. Northampton is classified as a 5.8.
Smith Lights
5 Best Principles of Good Lighting:
Shielded
Dim
Warm-Toned
Motion-detected
Necessary
Our class has also made a catalog of Smith & Northampton lights! Find it here
Resources
Dark Sky International !!! <-- <-- <-- the big one !!!Â
Campus SHINE (Smith College) !! <-- Sign up for our newsletter!
Light Pollution Literature Database (concerns, frequent discussions, evidence, studies)
EpiCollect 5 (Smith lights data collection)
International Astronomical Union (IAU) Recommendation on Protection of Astronomical Skies [from light pollution] (2025)
Astrobin - user forum & gallery
Astronomy Picture of the Day (APOD)
Amazing Sky - Alan Dyler photos
Intro to Noise (R. Wright 2018, Sky & Telescope)
Demystifying bias and dark frames (R. Wright 2021)
Demystifying flat-field frames (R. Wright 2021)