Numerical Aperture, Resolution, and Depth of Field
Understand numerical aperture, Abbe resolution, condenser NA, and depth of field to make informed choices about microscope objectives and illumination.

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
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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.
Understand numerical aperture, Abbe resolution, condenser NA, and depth of field to make informed choices about microscope objectives and illumination.
Explore how cosmic rays influence the universe’s structure and evolution.
Explore Jupiter’s moon Europa: evidence for a global ocean, habitability, JWST CO2 results, and what Europa Clipper and ESA JUICE will discover.