Numerical Aperture, Resolution & Magnification Guide
Understand numerical aperture, resolution limits, and magnification trade-offs in optical microscopy. Learn NA matching, Köhler, sampling, and contrast basics.
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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, resolution limits, and magnification trade-offs in optical microscopy. Learn NA matching, Köhler, sampling, and contrast basics.
Learn to capture nebulae and galaxies from a light‑polluted backyard: gear, planning, polar alignment, guiding, exposure, stacking, and processing tips.
Choose the right microscope camera and C‑mount adapter: sensor size, pixel size, field of view, relay optics, sampling, color vs mono, and common pitfalls.