November 2022

Factors affecting line profile

Factors Affecting Spectrometer Performance

7 Minute ReadIntroduction There are a number of technical constraints to consider when selecting a spectrometer for a particular application, whether this involves purchasing a commercial model from the wide range of relatviely low cost mini-spectrometers available these days, or whether one is designing and home-building a spectrometer from scratch. In this post we shall consider some […]

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Off-Axis Guiders and Sighting Optics

4 Minute ReadIntroduction An off-axis guider is a device well known to all astronomers, professionals and amateurs alike. It usually consists of a compact optical unit inserted between the main imaging camera and the telescope to intercept a small amount of light coming from an astronomical object. Its purpose is to track the motion of that object

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