num_pages: 498
description: In this fresh list Stephen James O'Meara presents 109 new objects for stargazers to observe. The Secret Deep list contains many exceptional objects including a planetary nebula whose last thermal pulse produced a circumstellar shell similar to the one expected in the final days of our Sun's life; a piece of the only supernova remnant known visible to the unaided eye; the flattest galaxy known; the largest edge-on galaxy in the heavens; the brightest quasar; and the companion star to one of the first black hole candidates ever discovered. Each object is accompanied by beautiful photographs and sketches original finder charts visual histories and up-to-date astrophysical information to enrich the observing experience. Featuring galaxies clusters and nebulae not covered in other Deep-Sky Companions books this is a wonderful addition to the series and an essential guide for any deep-sky observer.
language: English
title: Deep-Sky Companions: The Secret Deep
publisher: Cambridge University Press