your monthly double stars

Issued my double star "bulletin" for September. It is a short list of suggested double and multi-star targets. I shared this on the RASC Toronto Centre forums. And I post here for all.

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Hi there. Hi.

The Moon is back. Again. Boo! But there’s no smoke in the air. Yeh! So it’s time to have a go at some more celestial targets resistant to light pollution: double stars.

Here’s a short selection of doubles from my life list, ones I find rather interesting. I did not include terribly tight targets.

star	also known as	alternate catalogue
α1 and α2 (alpha) Cap	Algedi, Al Giedi, or STF 4051	SAO 163422
U Cyg	BUP 183	SAO 49477
HD 193007 in Cyg	BU (Burnham) 442	SAO 69728
θ (theta) Sge	Σ (Struve) 2637	SAO 88276
HD 183014 in Vul	Σ2523	SAO 87218

Why don’t you add these to your observing list. Doubles are easy, challenging, impressive, colourful, dynamic–always fun! Let me know how you did!

Blake Nancarrow
astronomy at computer-ease dot com