Double Star Astronomy @AddictDouble
Double stars content with emphasis in the golden era of visual astronomy. Page maintained by @WierzchosKacper. Posts for educational purposes. Tucson, AZ / Madrid, Spain Joined October 2018-
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Double Star Astronomy retweeted
Sunset on Mt. Bigelow. The domes contain our 0.68m Schmidt telescope (MPC 703) and the Kuiper 1.5m telescope (MPC V06). Image taken by our observer David Rankin.
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It's always exciting to see a new book about double stars. "An Anthology of Visual Double Stars" by Bob Argyle, Mike Swan and Andrew James. Coming soon in Summer 2019. cambridge.org/core/books/an-…
Another Double Star quote worth sharing. From Paul Couteau's 1978 classic "Observing Visual Double Stars".
From Robert Aitken's "On Observing Double Stars" 1938 articles.adsabs.harvard.edu/cgi-bin/nph-ia…
"My aim is to guide the young astronomer who is beginning to observe. These things are not learned like theories in physics, but are acquired over the years, like the trade of a craftsman. Everything that an astronomer does in the dome carries his signature" P. Couteau
The 18.5" Clark Refractor of the Dearborn Observatory. S. W. Burnham discovered some very interesting pairs with this instrument.
Double star hero George Van Biesbroeck. Photo: University of Chicago Photographic Archive
Micrometric measures by Bob Argyle and Jean François Courtot, data-mining work by @WilfriedKnapp, astrometric eyepiece measures by Rob Moseley & Martin Grahn and more in the new Webb Deep Sky Society Double Star Section Circular: webbdeepsky.com/dssc/dssc27.pdf
Be sure to check the new Webb Deep Sky Society Double Star Section Circular: webbdeepsky.com/dssc/dssc27.pdf
Jonckheere's note on the planetary nebula J 900 which he discovered with the 33 cm Lille refractor as it appears in his "Catalogue General de 3350 Étoiles Doubles de Faible Éclat Observées de 1906 a 1962".
Announcement of the discovery of Sirius B by Alvan Clark as it appeared in the Monthly Notices of the Royal Astronomical Society.
New IAU Double Stars Information circular is out: Interesting new bright(ish) pair Scardia 191AC. The two brighter stars of this system are Couteau 899. Surprised to see that Couteau did not discover the C component. ad.usno.navy.mil/wds/bsl/cir197…
Amazing two arm spiral structure in the protoplanetary disk of the primary component of the double Collins 1 (WDS 11331-5419) as imaged by Collins et al. 2018 with the VLT. iopscience.iop.org/article/10.384…
The micrometer that used to ride on the 26" Clark refractor at the USNO. @usnowds who put that funny sign? Pic by T. V. Bryant.
Epsilon Lyrae AKA the double double as depicted in Burnham's Celestial Handbook. W. Herschel discovered the duplicity (or quadruplicity) of this most interesting and striking system.
Gotta love the double star lists in Burnham's classic Celestial Handbook...
Some very interesting (and close) binaries in the Orion Nebula Cluster as photographed with the 8.1m Gemini North Telescope by Correia et al. 2013. aanda.org/articles/aa/pd…
From Kervella et al. 2019: Positions of the components of the binary star 61 Cyg AB (K5V+K7V) at the Hipparcos and GDR2 epochs, with the corresponding PMa (proper motion anomaly) vectors. arxiv.org/pdf/1811.08902…
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