your monthly double stars

Issued my double star "bulletin" for June. 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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With the full Moon phase approaching, you might think you can only clear eyepieces. In fact, you can do lots of astronomy. Double stars, for example, punch through bright skies so you can observe them any time, anywhere!

Here’s a short selection of doubles from my life list, ones I find rather cool. Targets in Lupus will require good southern sight lines and good seeing. And alpha Librae is right beside Jupiter!

star	also known as	alternate catalogue
α (alpha) Lib	Zubenelgenubi or SHJ 186	SAO 158840
κ (kappa) Boo	Asellus Tertius or STF 1821	SAO 29046
μ1 (mu) Boo	Alkalurops	SAO 64686
α UMi	Polaris or Σ (Struve) 93	SAO 308
ξ1 (xi) Lup	PZ 4	SAO 207144

Please consider adding double stars to your observing list. They are fun, easy, sometimes challenging, interesting, colourful, and dynamic!

I look forward to hearing how you did! Share your observations. And
holler if you have any questions. Go!

Blake Nancarrow
astronomy at computer-ease dot com