Seeing vs Transparency: Master Your Sky Conditions
Understand astronomical seeing and transparency. Forecast, test, and adapt for sharper views and better images with practical tools, formulas, and tactics.
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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.
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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 astronomical seeing and transparency. Forecast, test, and adapt for sharper views and better images with practical tools, formulas, and tactics.
Understand resolution, numerical aperture, wavelength, and Nyquist sampling in light microscopy with clear formulas, examples, and practical trade-offs.
How to Observe the International Space Station (ISS) with a Telescope Observing the International Space Station (ISS) with a telescope is a thrilling experience for amateur astronomers and casual stargazers alike. As one of the largest man-made objects in low Earth orbit, the ISS is easily visible to the naked eye when conditions are right.