Monday, September 28, 2020

posted Oct 2020 doubles

Prepared my double star "bulletin" for October 2020. It is a short list of suggested targets. I will share this on the RASC Toronto Centre forums. And I post here for everyone.

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A few double stars for your observing campaigns.

Some of these double stars have dim elements, down to magnitude 10. So you might need a slightly larger rather than smaller instrument. But I think they are all worth it.

staralso known asalternate catalogue(s)
ψ1 AqrSTFB 12, 91SAO 146598, HIP 114855
HJ 1940 CepGaia 2739178880TYC 04302-0707 1, GSC 04302-00707
10 LacS 813SAO 72575, HIP 111841
PPM 172023 PegSTT 443SAO 126937, TYC 00555-0121 1
ο (omicron) Cygο-1, 31 Cyg, HJ 1495SAO 49337, HIP 99675

A quick note on omicron Cygni. Use every level of magnification you have, started with Mark I eyeball. 

STFB refers to Struve Appendix B.

The Gaia catalogue number is from the second data release (DR2).

Enjoy.

Blake Nancarrow
astronomy at computer-ease dot com

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