Numerical Aperture and Resolution in Microscopy
Understand numerical aperture, resolution, and sampling in optical microscopy. Learn how NA, wavelength, illumination, and pixels set image detail.

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.
Understand numerical aperture, resolution, and sampling in optical microscopy. Learn how NA, wavelength, illumination, and pixels set image detail.
Explore how black holes influence cosmic structures and our understanding of the universe.
Celestron is well-known for its quality telescope offerings – along with, unfortunately, a whole host of horrible instruments designed to cash in on the brand’s reputation. Differentiating between the two can definitely be a challenge, especially if you’re new to astronomy or not familiar with present-day brands and offerings. However, we’ve picked out a few