My Cart (0)

Message from Sky & Telescope

The AAS staff (including staff of Sky and Telescope) are working remotely from their homes to support the social distancing efforts to contain COVID 19. While we are all working to support the S&T community, there may be delays in responding during this time. If you have a question or concern, please contact Camillia Taylor at [email protected]. Click here for information on delays in international deliveries.

This is a difficult time for the entire United States. Aero, our fulfillment partner, is based in Ohio. Aero provides fulfillment services for P&G. While they will continue to fulfill our orders, there may be a delay in shipping our products because they must give priority to medical, personal healthcare, and cleaning and sanitization products.

Lab Exercises in Astronomy: Spectral Classification

By The Editors of Sky & Telescope

Format: Supplies

SKU# LE002

Just reading about how astronomers use the spectra of stars to learn their physical and chemical secrets can’t compare with taking samples of such spectra and classifying the various types for yourself. This exercise is based on a large objective-prism photograph of a region of the Milky Way near Gamma Cygni, taken with a 24-inch Schmidt telescope. The student compares 30 numbered spectra and a dozen detailed reproductions of standard spectra, covering the entire spectral sequence from not WN and O stars through classes B, A, F, G, K, and M. The text elaborates on the clues by which the classes are recognized and a star’s position within a class refined. The exercise contains considerable information concerning chemical elements in stars and the role of temperature in the apparent abundances.

Click here to see the separate Answer Sheet for Spectral Classification Lab.

SKU LE002
Author The Editors of Sky & Telescope
Format Supplies
$1.65

In Stock

Be the first to review this product