Wednesday, July 10, 2019

doubles for July 2019

Sent out my double star "bulletin" for July 2019. It is a short list of suggested targets. I shared this on the RASC Toronto Centre forums. And I post here for all.


Smoke from forest fires may hamper your efforts and allow only views of the Moon and planets at opposition. Maybe brighter double stars could punch through the haze?

For July, here's a short selection of doubles from my life list, ones I find beautiful and impressive. I did not include terribly tight targets.

staralso known asalternate catalogue(s)
σ CrB17 CrB or STF 2032HIP 79607
μ HerΣ2220 (Struve)SAO 85397, HIP 86974
HD 238823 DraPPM 36404 or STF 2300SAO 30778
γ Ser41 SerpentisSAO 101826, HIP 78072
53 OphSTF A 34SAO 122526, HIP 85998

Consider adding these to your observing list.

Remember doubles are fun, easy, sometimes challenging, always interesting, often colourful, and dynamic!

I look forward to hearing how you make out. Holler if you have any questions.

Blake Nancarrow
astronomy at computer-ease dot com

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