Saturday, August 01, 2020

posted August 2020 doubles

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.


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.

staralso known asalternate catalogue(s)
HD 164536 SgrARG 31SAO 186152, PPM 267729
HR 6162 HerΣ2063 (Struve)SAO 46147, HIP 80953
HD 119702 UMiHJ 2682SAO 7867, HIP 66728
ζ LyrSTF A 38 (Struve), BU 968SAO 67321, HIP 91971
HD 144564 SerΣ2007SAO 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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