Friday, May 21, 2021

posted May '21 doubles list

Prepared my double star "bulletin." It is a short list of suggested targets. I shared this on the RASC Toronto Centre forum. I post here for all.


Wow. It was 3 years ago, I think, that I first started bombarding you with double star targets during bright Moon passes. I hope you're OK with all this because I have a couple more I would like to share. :-D

Double stars 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 interesting and impressive. I did not include terribly tight targets. 

staralso known asalternate catalogue(s)
HD 105288 CVnHJ 2596SAO 44039, HIP 59115
HR 4698Σ1633, HD 107398SAO 82254, HIP 60197
ξ (xi) BooΣ1888, 37 BooSAO 101250, HIP 72659
HD 164984Σ2273SAO 17717, HIP 88071
HD 110886 VirΣ1677SAO 138952, HIP 62234

Add doubles to your observing list. They are fun, easy, sometimes challenging, interesting, colourful, and dynamic! I look forward to hearing how you did! Share your log notes.

Blake Nancarrow
astronomy at computer-ease dot com

Notable double star designations:
Σ = F. Struve, STF
OΣ = O. Struve, STT
β = Burnham, BU

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