Notice of Next Meeting

Our next monthly meeting takes place on:

  • Date: Wednesday 12 July 2017
  • Time: 19h30
  • Location: Jhb. Observatory
  • Presenter:  Tim Cooper
  • Topic: Observing the potential meteor shower from Comet C/2015 D4 (Borisov).
  • Donation: R20 pp for tea and snacks

Meetings generally last about one and a half hours, and include a Beginners Corner, 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: Sunday 25 June 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:

  • 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 June

 

With the winter solstice already on our doorstep. Our telescopes should be out, dusted and made ready for stargazing, night upon starry night.

See Jupiter, its beautiful bands and great red spot. Saturn, our queen of the night as she rises in the East.

Look at the moon and trace Arstoteles, a crater, the highlight of the month.

The distances between stars is really vast. Think of a light year – about 10 trillion KM long. Stars can be light years apart.

Is the alumni in the science world of astronomy  considering star travel?

Imagine…. visiting Alpha Centauri – only at 4.3lightyears away.

Be practical or dream and read about it in Canopus.

 

Moon Phases:

Universe Today

Blastoff of 2nd flight-proven SpaceX Falcon 9 with 1st geostationary communications for Bulgaria at 3:10 p.m. EDT on [...]

Sat, Jun 24, 2017
Source: Universe Today

Host: Fraser Cain (@fcain)

Special Guest:
This week’s special guests are the NEOShield-2 Project Team. NEOShield-2 is a 100% European [...]

Fri, Jun 23, 2017
Source: Universe Today

     Space.com

One day after putting Bulgaria's first communications satellite into orbit, SpaceX is preparing for a Falcon 9 launch from Vandenberg [...]
Sat, Jun 24, 2017
Source: SPACE.COM
NASA is hoping to execute a nighttime rocket launch that's designed to create artificial glowing clouds. These could be visible [...]
Sat, Jun 24, 2017
Source: SPACE.COM

Astronomy.com

Unexpected budget cuts may cause a slight delay. [...]
Fri, Jun 23, 2017
Source: Astronomy.com

This puzzling object is the wrong shape for its type.

[...]
Fri, Jun 23, 2017
Source: Astronomy.com

APOD

Markarian s Chain to Messier 64

Markarian s Chain to Messier 64


[...]
Source: APOD
Solstice Conjunction over Budapest

Solstice Conjunction over Budapest


[...]
Source: APOD

Facebook

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.
Astronomy - ASSA Johannesburg Centre
Astronomy - ASSA Johannesburg Centre shared Ardit Bicaj's post.Sunday, June 11th, 2017 at 9:29am
Astronomy - ASSA Johannesburg Centre
Astronomy - ASSA Johannesburg CentreSunday, June 11th, 2017 at 1:16am
KELT-9b - Amazing huge glowing planet with a comet tail in a polar orbit around its fast rotator sun.
Astronomy - ASSA Johannesburg Centre
Astronomy - ASSA Johannesburg Centre shared Beyond Our Sight's video.Sunday, June 4th, 2017 at 9:34am
Astronomy - ASSA Johannesburg Centre
Beyond Our Sight
Astronomical Distances and Speed of Light. Credit: TED / Yuan-Sen Ting
Astronomy - ASSA Johannesburg Centre
Astronomy - ASSA Johannesburg Centre shared Planetary Landscapes's post.Tuesday, May 30th, 2017 at 11:26am
Juno gives you Jupiter like never before...
Astronomy - ASSA Johannesburg Centre
Planetary Landscapes
Juno gives you Jupiter like never before. I am not sure you are ready for this...Fell off my chair. 😳 This is absolutely mind boggling, jaw dropping beautiful. I know. I already said that all day yesterday and the day before, but that was before this. Fasten your seatbelt and take flight around Jupiter...Planetary awesomeness...Happy Flight! Credit: NASA / SwRI / MSSS / Gerald Eichstädt / Seán Doran
Astronomy - ASSA Johannesburg Centre
Astronomy - ASSA Johannesburg Centre added 2 new photos.Thursday, May 25th, 2017 at 11:16am
The position of Nova ASASSN-17gk in Centaurus near the Southern Cross and Coalsack which is not visible in my widefield image but clearly so in the excellent narrow field image taken by Dave Blane. It's not bright at about mag 11.3 but is visible in medium scopes from the city.
Astronomy - ASSA Johannesburg Centre
Astronomy - ASSA Johannesburg CentreFriday, May 19th, 2017 at 2:06pm
ASSAJHB
Public Viewing
JHB Observatory
18A Gill Street, Observatory
19h30 -22h00
Astronomy - ASSA Johannesburg Centre
Astronomy - ASSA Johannesburg CentreFriday, May 5th, 2017 at 12:50pm
The public viewing for 5 May has to be cancelled due to poor weather forecast for this evening.
Astronomy - ASSA Johannesburg Centre
Astronomy - ASSA Johannesburg Centre shared CosmosUp's video.Wednesday, May 3rd, 2017 at 7:59am
Astronomy - ASSA Johannesburg Centre
CosmosUp
Solar System Size Comparison
Astronomy - ASSA Johannesburg Centre
Astronomy - ASSA Johannesburg CentreSaturday, April 22nd, 2017 at 7:57am
While the shimmering, eerie, light display of auroras might be beautiful and captivating, they are also a visual reminder that Earth is connected electrically to the Sun.
Astronomy - ASSA Johannesburg Centre
Astronomy - ASSA Johannesburg CentreFriday, April 21st, 2017 at 1:51pm
The Public Viewing for 21 April has to unfortunately be cancelled due to work and other prior commitments by our viewing officers.
Our apologies for this development.

Regards

Jerome
Astronomy - ASSA Johannesburg Centre
Astronomy - ASSA Johannesburg CentreSunday, April 2nd, 2017 at 10:28pm
Get in on the act....... 5 Million data sets analysed in three days. That's really going some.
Astronomy - ASSA Johannesburg Centre
Astronomy - ASSA Johannesburg Centre shared Physics-Astronomy.com's video.Friday, March 31st, 2017 at 7:20pm
Astronomy - ASSA Johannesburg Centre
Physics-Astronomy.com
You've probably never seen the moon like this 🌚 That's because the moon is tidally locked to Earth, so we only see one side. Almost like its spinning with us. This video was created using images from the Lunar Reconnaissance orbiter.
Astronomy - ASSA Johannesburg Centre
Astronomy - ASSA Johannesburg CentreSunday, March 26th, 2017 at 8:40am
ASSAJHB
SKY and BRAAI - 26 March - CANCELLED
Unpredictable weather.
Astronomy - ASSA Johannesburg Centre
Astronomy - ASSA Johannesburg CentreFriday, March 17th, 2017 at 2:59pm
ASSAJHB
Public Viewing - 17 March 2017
CANCELLED - Unpredictable weather
Astronomy - ASSA Johannesburg Centre
Astronomy - ASSA Johannesburg CentreFriday, March 17th, 2017 at 10:49am
ASSAJHB
Public Viewing - 17 March 2017
18A Gill Str, Observatory
Late Summer Sky
19h30 - 22h00
http://astronomyjhb.co.za
Astronomy - ASSA Johannesburg Centre
Astronomy - ASSA Johannesburg CentreThursday, March 16th, 2017 at 10:28am
After decades of failures and misunderstandings, scientists have solved a cosmic riddle — what happens to the tons of dust particles that hit the Earth every day but seldom if ever get discovered in the places that humans know best, like buildings and parking lots, sidewalks and park benches.

The answer? Nothing. Look harder. The tiny flecks are everywhere.

Twitter

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.