Properly Setting Up Koehler Alignment in a Microscope

Microscopes / By

Understanding Koehler Alignment Before we understand Koehler alignment – the main topic of this article – let’s go into a bit of the history behind its conception.  Koehler alignment was invented by August Koehler, a 19th-20th-century German scientist. His publication, “A New System of Illumination for Photomicrographic Purposes,” was a revolutionary foray into solving problems that plagued […]

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How to Buy a Microscope: The Ultimate Buyer’s Guide

Microscopes, Resources / By

Understanding Microscopes There are a plethora of different microscopes types out there: simple and compound microscopes, stereo microscopes, digital microscopes, fluorescence microscopes, confocal microscopes, and scanning probe microscopes. Check out this informative article for descriptions, anatomies, functions, and applications. In this article, we will look at microscopes from another lens (get it?): the definitive guide

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How Long After Sunset is it Dark?

Astronomy, Stargazing Techniques and Tips / By

Let’s Get Started… We get the question “how long after sunset is it dark?” a LOT. Knowing the time of darkness after sunset is important to many astronomers and astrophotographers. Unfortunately, however, it is not a straight answer for every situation; one must consider things such as latitude, season, and altitude. What is “Astrodark”? Astrodark

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How to observe saturn and its moons

Astronomy, Celestial Objects, Planets_Moons, Stargazing Techniques and Tips / By

Immediately Recognizable, Always Unforgettable: Saturn Saturn is a gas giant planet named after the Roman god of agriculture and harvest. It is the second-largest planet in our solar system, with a diameter about 9 times that of Earth, slightly smaller than Jupiter, which is about 11 times the size of Earth. Saturn is less dense

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Smartphone Telescope Adapters: Worth Your Time And Money?

Astronomy, Telescope Reviews and Guides / By

If you’ve been shopping around for telescopes, chances are you’ve seen that some have smartphone telescope adapters included. These make it very convenient for you to take pictures of the celestial objects that you view when looking at the sky. How do smartphone telescope adapters work? These adapters are clamped onto the eyepiece of the

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