Please use another browser such as Chrome, Edge, Firefox, or Safari for the best experience

Skip to content Solar Eclipse Safety

Astronomy Spectrographs

 
 

This means that a spectrograph can help the experienced astronomer determine the chemical composition of an object. No celestial object shines the same, therefore the color light an object gives off is determined by the gases that make up the object. For example, the Sun’s chromosphere is only visible along the Hydrogen-Alpha line, emitting a deep red color because of the chromosphere’s high level of hydrogen atoms. A spectrograph can help you assess what filter is best to use for viewing or imaging a particular object, such as an H-alpha filter for viewing the Sun’s chromosphere.

Spectrographs like the one made by Starlight Xpress can also be used to determine the surface temperature of a celestial object. Each color on the light wavelength spectrum emits a unique brightness that can affect your viewing experience. The device is helpful in figuring out the speed and rotation speed of stars to give you more context in regards to what you are looking at. With all of this useful information a spectrograph user receives, it may take some getting used to in order to figure out what information is relevant and useful to your specific needs. Although it poses a significant learning curve, a spectrograph can be a joy to use and enhance your views of the stars.