The spectrum of an object can give us a lot of information, such as type of the object, radial velocity, redshift, presence of chemical elements or compounds in its atmosphere, an estimate of its distance, etc. In this article we take a look at one-dimensional spectra created by SDSS and Read more…
In a recent post I have written about a few basic concepts of the Sloan Digital Sky Survey (SDSS) and how to retrieve some data using ADQL from its servers. Now, in this post, I’m going to introduce two major kinds of objects in more depth and explain how to Read more…
The Sloan Digital Sky Survey (SDSS) is one of the greatest deep-sky surveys ever made. It has been launched by *Apache Point Observatory* in New Mexico, United States. Here, I’m going to introduce briefly some basic concepts needed to work with the rest of our tutorial. For a complete description, Read more…