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.
Meade’s ETX-90 was a flagship of the company’s product line for decades. Offering high-quality Maksutov-Cassegrain optics in a portable and affordable package, the ETX-90 was originally designed to compete with the Questar, a widely revered premium telescope that continues to cost over $5,000 USD new. The Questar debuted in 1958 and has remained unchanged since.
Table of Contents What Do Numerical Aperture and Magnification Mean in Microscopy? Optical Resolution Limits: Diffraction, Wavelength, and NA Illumination, Contrast, and How NA Affects Brightness Common Magnification Traps and Empty Magnification Resolution Versus Contrast: Why Sharper Is Not Always Clearer How to Choose Objective NA, Working Distance, and Field Condenser Aperture and Matching NA […]
Learn how microscope stages, z-focus, and sample holders work, plus trade-offs between mechanical, motorized, and piezo options for precise imaging.
