Polarized Light Microscopy for Geology: A Guide
Learn how polarized light microscopy reveals minerals in thin sections. Understand birefringence, interference colors, extinction, and petrographic applications.

Guides to help with your Stargazing Adventure

Information on Galaxies, Stars, Constellations, Planets, Moons, Comets and Asteroids
Listen to Bernard Miller describe his journey into AstroPhotography and detail how he captured this stunning image of the Sculptor Galaxy.
Read the full article here.
Drew Evans talks about his passion for astrophotography, the equipment used and tips for post processing image data.
Read the full article here
Hear D.j Van Bourgondien as he talks about using his Celestron EdgeHD 8″ telescope to capture this image of the Fireworks Galaxy
Read the full article here
Get your free e-Book downloads, just click on the button below.
Below are a selection of our Articles, to find more click on one of the sections above, or use the Menu at the top of the page.
Learn how polarized light microscopy reveals minerals in thin sections. Understand birefringence, interference colors, extinction, and petrographic applications.

Looking for the best telescopes without breaking the bank? This article has got you covered. In this article, we will share our top picks for the best telescopes under $500. Contrary to what some may believe, it does not take an expensive telescope to be able to see the moon, stars, and planets with great
Learn how numerical aperture (NA) sets microscope resolution, brightness, contrast, and depth of field. Get clear formulas, trade-offs, and practical tips.