NEED TO KNOW

Sky at Night Magazine - - OCTOBER / THE SKY GUIDE -

The terms and sym­bols used in The Sky Guide

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Uni­ver­sal Time (UT) is the stan­dard time used by as­tronomers around the world. Bri­tish Sum­mer Time (BST) is one hour ahead of UT.

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Th­ese co­or­di­nates are the night sky’s equiv­a­lent of lon­gi­tude and lat­i­tude, de­scrib­ing where an ob­ject is on the ce­les­tial ‘globe’.

FAM­ILY FRIENDLY

Ob­jects marked with this icon are per­fect for show­ing to chil­dren

NAKED EYE

Al­low 20 min­utes for your eyes to be­come dark-adapted

PHOTO OPP

Use a CCD, plan­e­tary cam­era or stan­dard DSLR

BINOC­U­LARS

10x50 rec­om­mended

SMALL/ MEDIUM SCOPE

Re­flec­tor/SCT un­der 6 inches, re­frac­tor un­der 4 inches

LARGE SCOPE

Re­flec­tor/SCT over 6 inches, re­frac­tor over 4 inches

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