Imaging a Spectrum with the Grating [chapter]

Ken M. Harrison
2012 Patrick Moore's Practical Astronomy Series  
Spectroscopy is a three part process. The first part is to obtain a usable spectrum. The second part is to process the spectrum, apply corrections and calibrate for wavelength. The final step is perhaps the most exciting -the analysis and identification of the "fingerprints." The tools and techniques you'll need to carry out each aspect of the work are covered in the following chapters. We are now ready to record our first spectrum. Here we will discuss the different ways we can connect the
more » ... can connect the grating to the telescope/camera lens, look at the factors that will determine the size, clarity and resolution of the spectrum recorded and equally important describe how to acquire those first spectrum images. How Do We Use the Grating? The grating can be used in many different ways to provide us with an image of the spectrum, but the most common ways are:
doi:10.1007/978-1-4614-1397-4_2 fatcat:akhuo5wihzakpoffzed4446dou