Reviews

Choosing a Beginner Telescope
Reviews

Choosing a Beginner Telescope

By Dr. James Dire Having been an astronomy professor for several decades, an amateur astronomer for several more, an experienced astrophotographer, and a reviewer of myriad telescopes, mounts, astronomical software and other equipment, I am commonly asked to give recommendations on the best telescopes for beginners, the best telescope for […]

A Deep Dive into Alt-Az Telescope Mounts for Long Exposure Astrophotography
Reviews

A Deep Dive into Alt-Az Telescope Mounts for Long Exposure Astrophotography

Niels Haagh hosts the website Astronomical Telescopes and Mounts Explained for Amateurs. He recently posted the second article in a series covering astrophotography using Alt-Az telescope mounts. The article, titled Alt-Az Mounts for Long Exposure Astrophotography – Camera Rotators, offers insight into the most advanced type of Alt-Az astrophotography using […]

Figure 1 – Spectrum of a Sun like star
Reviews

The SkyTools 4 Imaging Model

By Greg Crinklaw Major professional observatories, such as ESO, use mathematical models of their telescope and instruments to plan their observations. It is useful to know the image scale, what exposure times to use, whether a star will bloom or if the signal will become nonlinear, and how many exposures […]