See the Moon go red and the stars go green

Sky at Night Magazine - - LETTER FROM THE EDITOR - Chris Bram­ley Ed­i­tor PS Our next is­sue goes on sale on 24 Jan­uary.

The New Year couldn’t start much bet­ter for am­a­teur astronomers, with an ea­gerly an­tic­i­pated to­tal lu­nar eclipse oc­cur­ring on the morn­ing of 21 Jan­uary. Watch­ing the full Moon turn from bright sil­ver to deep grey to rich red is a cap­ti­vat­ing spec­ta­cle, and it will be fas­ci­nat­ing to as­sess and record the shade of the Moon dur­ing to­tal­ity since ev­ery eclipse is dif­fer­ent. The en­tire event will be vis­i­ble from the whole of the UK; make sure you don’t miss it by not­ing the tim­ings on page 52, and turn to page 64 for our ex­pert guide on how to get great pho­tos of the event.

There’s a chance to ex­pe­ri­ence colour of an­other kind with our fea­ture on page 38, where you’ll find a guide to the most greentinged stars in the north­ern hemi­sphere. As our au­thor is quick to point out, the stars in the guide merely give the im­pres­sion of be­ing green – many are dou­bles where the colour con­trast lends one star in the pair a ver­dant ap­pear­ance. Nev­er­the­less, it’s in­ter­est­ing to see if you per­son­ally can de­tect an emer­ald hue, and whether other ob­servers you know can as well. Let us know too!

While no star’s colour is truly, vis­i­bly green, they do emit green light as part of a broad spec­trum. In this is­sue we take a look at DayS­tar’s new so­lar fil­ter, which iso­lates this very wave­length and gives views of the Sun that are vis­i­bly green at the eye­piece. See what fas­ci­nat­ing, new so­lar fea­tures the Mag­ne­sium I b2 fil­ter re­veals in the First Light re­view on page 98.

En­joy the is­sue, and Happy New Year!

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