Rocky Nook Astrophotography by Thierry Legault shopify One extra-low dispersion element is

One extra-low dispersion element is featured in the optical design and helps to limit color fringing and chromatic aberrations for heightened image clarity and color accuracy

Both a zipper and an oversize flap with a buckle are used for closing the case

This replaces the camera's battery and has connections that allow you to power the camera from an AC outlet

Relatively bright f/4 maximum aperture enables a high degree of control over depth of field

This focusing system also supports working in low-light conditions with a Starlight mode that permits focusing down to -8

Rocky Nook Astrophotography by Thierry Legault shopify One extra-low dispersion element isTodays photographic equipment allows amateurs to take pictures of the stars that far surpass images taken just a few decades ago by even the largest observatories and this book will teach you how. Author and world renowned astrophotographer Thierry Legault teaches the art and techniques of astrophotography: from simple camera on tripod night scene imaging of constellations, star trails, eclipses, artificial satellites, and polar auroras to more