Numerical Aperture in Microscopy: Resolution Explained
Understand numerical aperture (NA) in microscopy: how it sets resolution, light capture, depth of field, and trade-offs with magnification and immersion media.

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
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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 (NA) in microscopy: how it sets resolution, light capture, depth of field, and trade-offs with magnification and immersion media.
Learn wide-field Milky Way astrophotography: gear, planning, exposure settings, stacking, and processing tips for sharp, low-noise night-sky photos.
Choose the right stereo microscope with confidence. Learn Greenough vs CMO, magnification, NA, depth of field, working distance, stands, cameras, and ESD tips.