Visitors to the Observatory must fill in an indemnity form.
The forms are available from the ASSAJhb coordinator at the event or can be downloaded from the link.
Completed forms must be handed to the ASSAJHB coordinator.

Notice of Next Meeting

Our next monthly meeting takes place on:

Indemnity Form Download.

  • Date: Wednesday 9 August 2017
  • Time: 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:

Indemnity Form Download.

  • Date: Sunday 23 July 2017
  • 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.

Agenda:

  • 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.

Events

Public Viewing Evenings:

Indemnity Form Download.

  • Jan –
  • Feb –
  • Mar –
  • 21 Apr – 0% Moon Illumination
  • 5 May – 77% Moon Illumination
  • 19 May – 0% Moon Illumination
  • 2 Jun – 64% Moon Illumination
  • 16 Jun – 0% Moon Illumination
  • 30 Jun – 48% Moon Illumination
  • 14 Jul – 0% Moon Illumination
  • 28 July – 33% Moon Illumination
  • 11 Aug – 0% Moon Illumination
  • 25 Aug – 18% Moon Illumination
  • 15 Sep – 0% Moon Illumination
  • 29 Sep – 66% Moon Illumination
  • 13 Oct – 0% Moon Illumination
  • 27 Oct – 49% Moon Illumination
  • 10 Nov – 0% Moon Illumination
  • 24 Nov – 32% Moon Illumination

Public Viewing Evenings take place at the Observatory – click here for directions and a map to the Observatory.

Please follow @JoosteJerome on Twitter or visit our Facebook page at https://www.facebook.com/assajhb for confirmation

In the Night Sky

The Night Sky for July

A million dewdrops glisten like diamonds in the sun,
when July night falls, dewdrops are no longer fun!
Frosty ice crackles on dry grass, hoarse whispers- pack and run.
Firmly star gazers stand, until the very last chance has gone.

 

Looking northward, from our southern latitudes we should be able to make out the famous “summer triangle” of the northern hemisphere, low on the northern horizon. Hanging there one should be able to see the bright stars Deneb in Cygnus the Swan, Vega in Lyra the Harp, and Altair in Aquila. Sweeping in an arc above it one should be able to make out the zodiac constellations: from the East: just on the horizon Pisces, then rising, Aquarius, Capricornus, Sagittarius, Scorpius almost in our zenith and going down in the west, Libra and Virgo. Have a good look at the Milky Way. The richest parts of which lie in Sagittarius almost directly overhead.

Happy sky searching this month!

Moon Phases:

Universe Today

On July 14th, 2015, the New Horizons mission made history when it became the first spacecraft to conduct [...]

Wed, Jul 19, 2017
Source: Universe Today

Totality! An incredible moment from the March 29th, 2006 total solar eclipse. Credit and copyright: Alan Dyer/Amazing [...]

Wed, Jul 19, 2017
Source: Universe Today

     Space.com

Reebok is really stepping up its footwear game with these cool new space boots. The athletic-apparel company just unveiled a [...]
Thu, Jul 20, 2017
Source: SPACE.COM
Space.com talked to Quindar's James Merle Thomas and Wilco keyboardist Mikael Jorgensen about their new record "Hip Mobility" and the [...]
Thu, Jul 20, 2017
Source: SPACE.COM

Astronomy.com

A new book explores the famed astronomer's career and lifetime of searching the skies. [...]
Thu, Jul 20, 2017
Source: Astronomy.com
Or, what disintegrating planets tell us about solar system formation. [...]
Wed, Jul 19, 2017
Source: Astronomy.com

APOD

Close up of the Great Red Spot

Close up of the Great Red Spot


[...]
Source: APOD
Thunderstorms almost spoiled this view of the spectacular

Thunderstorms almost spoiled this view of the spectacular


[...]
Source: APOD

Facebook

Astronomy - ASSA Johannesburg Centre
Astronomy - ASSA Johannesburg CentreSunday, July 2nd, 2017 at 1:18am
Visitors at the Public Viewing on Friday night. Despite our main scopes being out of commission the 8 inch worked its magic.
Astronomy - ASSA Johannesburg Centre
Astronomy - ASSA Johannesburg CentreSunday, July 2nd, 2017 at 1:09am
With the rings of Saturn at their widest during 2017 and the planet just past opposition it is by all counts the most captivating object we can see in any telescope. For a period tonight (1 July 2017) the steady skies over Jhb afforded observers excellent views of the planet.

http://www.skyandtelescope.com/observing/viewing-saturn-the-planet-rings-and-moons/
Astronomy - ASSA Johannesburg Centre
Astronomy - ASSA Johannesburg CentreSunday, June 18th, 2017 at 2:27am
Having fun processing JunoCam image set 1276 from Perijove 6 in RawTherapee and GIMP Unstable Version CCE 16bit. Plenty more raw image sets to download and process.
Astronomy - ASSA Johannesburg Centre
Astronomy - ASSA Johannesburg CentreSaturday, June 17th, 2017 at 12:09am
European Southern Observatory - Public Outreach Communication
Proxima Centauri - more interesting science
This month we’ll be launching a follow-up to the Pale Red Dot campaign. Stay tuned for the announcement planned for 19 June! You will again have the opportunity to witness real science done in real time, and this time with an interesting twist.
Astronomy - ASSA Johannesburg Centre
Astronomy - ASSA Johannesburg CentreFriday, June 16th, 2017 at 2:23am
Bit of an oops in the headline of this article as the notion of cometry origin for the signal faces some serious and seemingly valid criticism.

Twitter

Friday, June 30th, 2017 at 12:01pm
ASSAJHB
Public Viewing 30 June
Johannesburg Observatory
Time 19h30 - 22h00
go to https://t.co/ZooqxGgGeT for details
Monday, June 5th, 2017 at 1:30pm
ASSAJHB
Date:14 June 2017
Venue:Jhb. Observatory
Speaker:Prof. Lewis Ashwal
Topic:Hidden Continents
Details at https://t.co/KqnHrWs75c
Saturday, May 20th, 2017 at 1:01pm
New Nova discovered by ASSA-SN Cassius telescope. May brighten to mag V8.
https://t.co/aK6zJdWD8X
Friday, May 19th, 2017 at 11:04am
ASSAJHB
Public Viewing
JHB Observatory
18A Gill Street, Observatory
19h30 -22h00
Friday, May 5th, 2017 at 9:02am
ASSAJHB - JHB Observatory - The public viewing for 5 May has to be cancelled due to poor weather forecast for this evening.