Active Galactic Nuclei: Quasars, Jets, and Feedback
A deep guide to active galactic nuclei—accretion disks, jets, the unified model, SMBH growth, feedback, and how AGN shape galaxies across cosmic time.

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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A deep guide to active galactic nuclei—accretion disks, jets, the unified model, SMBH growth, feedback, and how AGN shape galaxies across cosmic time.

You’ve likely encountered this scenario before if you’re in a scientific or medicinal study field. You’re examining a specimen and want to compare two different samples under a single microscope. This can prove tricky with a single-lens microscope, as you want to avoid putting two samples under the same examination space. This is where dual
Learn the differences between infinity-corrected and finite-conjugate microscopes, including optical paths, image quality, accessories, and component compatibility.