Notice of Next Meeting

Our next monthly meeting takes place on:

  • Date: Wednesday 10 April 2019
  • Time: 19h00 for 19h30
  • Location: Jhb. Observatory
  • Presenter: TBA
  • Topic: TBA
  • Donation: R20 pp for tea and snacks

Meetings generally last about one and a half hours, and include a Topic of Interest, What’s Up in the Night Sky, and the Main Speaker’s Presentation. Tea and coffee are served afterwards. Visitors are welcome.

Click here for directions and a map to the Observatory

Sky and Braai

Our next monthly Braai takes place on:

  • Date: To Be Confirmed
  • Time: 16h30
  • Location: Jhb. Observatory, Top of the hill at the Herbert Baker Library. Map.
  • Topic: Whats Up – a detailed overview af some objects.
  • Donation: R20 pp for the fire wood. Children under 15 free.


  • 16h30  – Arrival and Fires started
  • 17h00 – Braai
  • 18h00 –  Presentation
  • 18h20 – 10 min Break
  • 18h30 – Viewing
  • 20h00 –  close domes and lock up.

Our fire glows warmly with a spirit of friendship settling to waft delicious aromas that pervade the olfactory nerves, creating intense appeal for taste buds.

Read More.

The murmering and chuckling displays delight, comfort and contemplative joy at what will be seen in the sky tonight. Bursts of joyous laughter bring one back to the chatter and fun of the evening. Do join ASSA JHB on the hill for a lovely evening of sky and braai. Dress warmly, bring along your meat to braai, your condiments, drinks and salads, anything you need for your meal, hmm… fingers were invented before knives and forks? and  oops, do not forget a chair or ‘situpon’. You may bring your own telescope if you want to.



Astronomy - ASSA Johannesburg Centre
Astronomy - ASSA Johannesburg CentreMon, Mar 11th, 2019 at 2:50pm
13 March monthly meeting.

Venue : Wits Planetarium
Time : 19h30

Speaker : Dave Blane
Topic: The Island Universes

Dave will take us on tour of the amazing objects we know as galaxies that make up our universe, there origins, structure, classification and how intertwined they are in the cosmic thread of dark matter.

This is an ordinary meeting. There is no Planetarium show.

R20 donation for refreshments.

Sky Guides will be available at R35 each.

Visitors and friends are welcome but we have had to restrict the numbers. We therefore have allocated place for 20 visitors who must please book through Monica Loubser via email.
Astronomy - ASSA Johannesburg Centre
Astronomy - ASSA Johannesburg Centre shared a post.Thu, Feb 14th, 2019 at 6:59pm
The December 2018 issue of MNASSA can now be downloaded from
The attached cover picture shows what is installed in this issue.
Astronomy - ASSA Johannesburg Centre
Astronomy - ASSA Johannesburg CentreTue, Jan 22nd, 2019 at 6:25pm
Hi all. Very sorry to announce that the meeting for 23 Jan has to be cancelled due to unforseen logistical issues.
Please let others who are not on this group know.
Astronomy - ASSA Johannesburg Centre
Astronomy - ASSA Johannesburg Centre shared a photo.Fri, Dec 14th, 2018 at 3:07pm
The Voyager 2 probe no longer feels the solar wind and is flying through the interstellar space between the stars. It carries a working instrument providing first-of-its-kind observations of the nature of this gateway. Mission operators still can communicate with the probe as it enters this new phase of its journey, but information – moving at the speed of light – takes about 16.5 hours to travel from the spacecraft to Earth. Here's a look at this incredible mission by the numbers: #AGU18


Wed, Aug 15th, 2018 at 10:55am
Monthly Meeting
Date: 15 August 2018
Venue: Wits Planetarium
Time: 19h15 for 19h30
Open to ASSAJHB members
Visitors welcome
Limited number of seats available for visitors (non ASSAJHB members)
Visitors Booking Contact : or SMS 084 405 4005
Wed, Aug 8th, 2018 at 3:10pm
August Monthly Meeting date rescheduled .
August Monthly Meeting : 15 August at Wits Planetarium see link for details

In the Night Sky

N In the South East with a broad sweep of the the MIlky Way rides the Celestial ship Argo Navis. This ancient vessel is made up of the current constellations; Vela, Carina and Puppis.

Left and to the north Lies Gemini with the bright and beautiful stars, Castor and Pollux in Gemini, while more to the north, the beauty of Capella bedazzles its host constellation Auriga, beside Taurus.

The equally bright stars of Crux and Centaurus brightly grace the Southern skies.

Cetus the Whale commands space in the Northwest. He had a name change. In ancient times he represented a sea monster called Typhon. There is all this and more to observe in the month of February.

Mira, which in Arabic, means “beautiful”. Joins the head and neck of Cetus, she is in the middle and known as the speeding wonder. Mira with a bow-wave made up of hot plasma/gas that form a tail so beautiful, in ultra-violet blue.

When our clouds are parted there will be time to look and see.

Moon Phases:

Universe Today

British Astronomical Association

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