Recent Posts

Posted in Core concepts Spherical Astronomy

Spherical astronomy: The Triangles – I

This post discusses spherical triangles in astronomy. What are their uses, their properties, and some basic related formulas.

Posted in Core concepts

Doppler redshift

A post about Doppler redshift, its uses, and its relationships to the Hubble and Friedmann equations

Posted in Core concepts Derivations Maxwell-Boltzmann distribution

Maxwell-Bolztmann distribution: The most probable speed

This post discusses the derivation of the expression for the most probable speed of gas molecules from the Maxwell-Boltzmann distribution.

Posted in Coordinate systems Equations HTML/JS

HTML/JS: Degree decimal to hour-min-sec

Convert degree decimal to hour-min-sec equivalent values | dd to hour-min-sec

Posted in Coordinate systems Equations HTML/JS

HTML/JS: hour-min-sec to degree decimal

Convert hour minute seconds to their degree decimal equivalents.

Posted in Black Hole EHT Telescopes

Making of Sagittarius A* image | Instruments

What went behind the making of the Sagittarius A* black hole image. This post covers an overview of instruments and a bit of technicalities.

Posted in Core concepts

Maxwell-Boltzmann distribution: The root-mean-square speed

Starting with the Maxwell-Boltmann distribution expression from the previous post, We determined the expression for mean speed to be, Deriving…

Posted in Core concepts

Maxwell-Boltzmann distribution: The mean speed

This post discusses the derivation of the expression for the mean speed of the gas molecules using the Maxwell-Boltzmann distribution.

Posted in Coordinate systems Equations HTML/JS

HTML/JS: Degree decimal to deg-min-sec

Convert degree decimal to degree minutes seconds.

Posted in Coordinate systems Equations HTML/JS

HTML/JS: deg-min-sec to degree decimal

Convert degree minutes seconds to their degree decimal values.