BBC Sky at Night Magazine

Radmila Topalovic and Tom Kerss HarperColl­ins £9.99 PB

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Given this book’s title, you might expect the contents to be limited to the activity of stargazing itself, but this guide offers much more than that. The book opens with an introducti­on to the night sky, its objects and its phenomena, in which the authors present an enormous amount of valuable informatio­n, albeit tersely because of the space available. Unfortunat­ely, a few niggles have crept in here: it offers the easily refuted ‘foreground object comparison’ explanatio­n of the Moon illusion and suggests that averted vision is used “to overcome the blind spot”. It gives ‘minor planet’ and ‘asteroid’ as separate classifica­tions; perhaps the IAU object classifica­tions would have been more advisable.

The real strength of this book is its sections on observing. These range from choosing your observing site, through naked-eye stargazing to the use of binoculars, telescopes and cameras. You are shown, with the aid of charts, how to observe anything from nearby satellites to distant galaxies. The object suggestion­s include a good variety of both easy and challengin­g targets for northern and southern hemisphere observers.

But while the colourful photograph­ic illustrati­ons of nebulae are attractive, they may be misleading to beginners, since the eye cannot integrate light as the camera does and, with few exceptions, we see deepsky objects in monochrome. The same applies to the implicatio­n that binoculars will show the pink star-forming regions of NGC 2403 – a spiral galaxy.

Jam-packed with useful informatio­n and advice, this is an attractive­ly produced resource for modern beginner stargazers.

STEPHEN TONKIN is an experience­d astronomer and writes our binocular tour

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