Plenty of details,
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This review is from: Turn Left at Orion: Hundreds of Night Sky Objects to See in a Home Telescope - and How to Find Them (Spiral-bound)
Excellent book from top expert. It has lots of detailed discussions, tips, diagrams.
The number of objects covered in details is enough to study by telescope years and years if taking in mind that the author experience is so long.
It is a Life time book.
Buy and enjoy.
Recommend to all level.