Sent out my double star "bulletin" for August 2020. It is a short list of suggested targets. I shared this on the RASC Toronto Centre forums. And I post here for everyone.
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The Moon’s bright again. Don’t despair; do doubles.
Here’s a short selection of double and multi-star systems from my life list for your observing campaign. I found them interesting.
| star | also known as | alternate catalogue(s) |
|---|---|---|
| HD 164536 Sgr | ARG 31 | SAO 186152, PPM 267729 |
| HR 6162 Her | Σ2063 (Struve) | SAO 46147, HIP 80953 |
| HD 119702 UMi | HJ 2682 | SAO 7867, HIP 66728 |
| ζ Lyr | STF A 38 (Struve), BU 968 | SAO 67321, HIP 91971 |
| HD 144564 Ser | Σ2007 | SAO 101922, HIP 78875 |
An interesting quality of double stars is their resistance to creeping light pollution. So, have a go. See if you can split them and detect colour. How different are they in brightness? And share your discoveries.
Blake Nancarrow
astronomy at computer-ease dot com
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