South Africa's online journal "Nightfall" is out

[Weltevreden SA]

Hi all, the Astro. Society of So. Africa's Deep-Sky Section has released its most recent "Nightfall" online journal. (https://drive.google.com/file/d/1_Nnlye4f_6oKWsgBVON0h0QS_vs4rHcD/view) 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

[bojan]

Downoloaded, thank you!

[DeWynter]

Thanks a lot, Dana! Great to see an article about Pulkovo Observatory. Was there once a while ago.

[Saturnine]

Just downloaded as well, lots and lots of interesting articles to read.
Congrats to the A.S.S.A. Deep Sky Sect. for publishing.

[Tinderboxsky]

Downloaded too. Thank you for the heads up.

[astroron]

Downloaded,look forward to a good read.
Cheers:thumbsup:

[pfitzgerald]

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

[silv]

I enjoyed reading about Henrietta Swan Leavitt, page 58ff.
"She published her results to a resounding yawn." What a sentence :rofl:

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

Annette