James Mullaney, a catalogue of 300 of the best showpiece objects in the
sky, with notes on what they should look like and room to enter your own
notes, a good usefull guide for any observer.
The Practical Astronomer
Brian Jones, this is a good all round book discussing everything from
how the sun works through to building your own observatory, also
contains star maps for the 12 months of the year, Discusses observing
techniques and telescopes.
Observing the Universe
Andrew J north, Feel you know the basics of astronomy?, well this then
should be your second book, its goes into a little detail on observing,
telescopes and a little bit of physics so you can get a feel for why it
all works. Contains a little bit of maths, but it can be skipped if you
Ted Smart, a general large format hardback encyclopedia book covering
every aspect of astronomy, also covers all the constellation in good
detail, lots of colour and great pictures.
Advanced Amateur Astronomy.
by Gerald North. Is a great book for getting your teeth in, it covers
all astronomy related topic to some extent
Observing Variable Stars
David Levy, a general overall guide to observing variable stars,
includes some starmaps, and discusses particular variable stars
and why they pulsate.
Don Machholz, Gives examples of the sequence in which to do it and when,
depending on what part of the world you are in. An informatine read for
anyone wanting to try out this challenge.
Brunier & Luminet, a large format hardback discussing the deepsky
wonders of the universe using hubble images and images for the biggest
telescopes in the world.