Numerical Aperture, Resolution, and Magnification
Understand how numerical aperture governs resolution, brightness, and depth of field in optical microscopy—plus magnification, sampling, and trade-offs.

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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Understand how numerical aperture governs resolution, brightness, and depth of field in optical microscopy—plus magnification, sampling, and trade-offs.
A clear guide to dark matter: strongest evidence, leading candidates like WIMPs and axions, and today’s searches via detectors, telescopes, and the LHC.

On January 3, 2023, American astronaut Walter Cunningham passed away at the age of 90 after a full and complete life. While he may not be a common household name today, he is an integral part of American history, specifically for his contributions to space exploration. NASA claims that Cunningham was “instrumental to our moon