Deep-Sky Companions: The Secret Deep（ISBN=） 英文原版

　　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.
　　· A fresh, new list of 109 deep-sky gazing challenges not
previously featured in the Deep-Sky Companions series · Features
many amazing objects, including the flattest galaxy known and the
companion star to one of the first black hole candidates ever
discovered · Filled with beautiful photographs and sketches and
O’Meara’s original finder charts and directions to finding the
objects

Preface ix
1　About this book 1
2　The Secret Deep 17
Appendix A　The Secret Deep: basic data 464
Appendix B　Twenty additional Secret Deep objects 467
Appendix C　Deep-sky lists: comparison table 468
Appendix D　Photo credits 471
The Secret Deep checklist 473
Index