Polarizers, Analyzers, and Retarders for Microscopy
Learn how polarizers, analyzers, and retarders work, how to choose and align them, and how to interpret colors in polarized light microscopy.

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.
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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
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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 polarizers, analyzers, and retarders work, how to choose and align them, and how to interpret colors in polarized light microscopy.
Learn how auroras work, what drives geomagnetic storms, how to read Kp and Bz, and practical tips to forecast and photograph northern or southern lights.
Learn how numerical aperture, resolution, wavelength, and magnification interact in optical microscopy. Practical rules to avoid empty magnification.