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Old 19-11-2018, 09:36 AM
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Weltevreden SA (Dana)
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South Africa's online journal "Nightfall" is out

Hi all, the Astro. Society of So. Africa's Deep-Sky Section has released its most recent "Nightfall" online journal. 122 pages of all-color, no ads astronomy. This issue features the first-ever mainstream publication of Anton Pannekoek's 1928 hand-drawn maps of the Southern skies, plus a long 150th anniversary tribute to Henrietta Swan Leavitt featuring pages from her four seminal double-star catalogs that led to her 1912 discovery of Cepheid variables. Our own globetrotting astro-ambassador Magda Streicher makes a pilgrimage to the seldom-visited Pulkovo Observatory near Saint Petersburgh, where Wilhelm Struve's 1820s double star catalogs definitively demonstrated William Herschel's speculation that gravity existed outside the solar system. In the back is a long, beautifully presented account of why galactic bars are vital to the survival of spiral galaxies. Much else, too, so dig in and have fun. =Dana De Zoysa
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Old 19-11-2018, 09:54 AM
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Downoloaded, thank you!
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Old 19-11-2018, 11:03 AM
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Thanks a lot, Dana! Great to see an article about Pulkovo Observatory. Was there once a while ago.
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Old 19-11-2018, 11:55 AM
Saturnine (Jeff)
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Just downloaded as well, lots and lots of interesting articles to read.
Congrats to the A.S.S.A. Deep Sky Sect. for publishing.
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Old 19-11-2018, 08:29 PM
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Downloaded too. Thank you for the heads up.
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Old 20-11-2018, 01:12 AM
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Downloaded,look forward to a good read.
Cheers
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Old 20-11-2018, 02:21 PM
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Thank you Dana - looks like an amazing eMag - lots of interesting articles to read at my leisure once my reports for school are all written!

Paul
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Old 20-11-2018, 06:18 PM
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silv (Annette)
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I enjoyed reading about Henrietta Swan Leavitt, page 58ff.
"She published her results to a resounding yawn." What a sentence

The rest of the magazine is waiting for my Sunday morning cuppa. Beautiful, extraordinary publication! Thanks a million for posting!

Annette
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