Saturday, June 23, 2018

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.


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!

staralso known asalternate catalogue 
α (alpha) LibZubenelgenubi or SHJ 186SAO 158840
κ (kappa) BooAsellus Tertius or STF 1821SAO 29046
μ1 (mu) BooAlkaluropsSAO 64686
α UMiPolaris or Σ (Struve) 93SAO 308
ξ1 (xi) LupPZ 4SAO 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

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