Notice of Next Meeting

Our next monthly meeting takes place on:

  • Date: Wednesday 12 April 2017
  • Time: 19h30
  • Location: Jhb. Observatory
  • Presenter: Michael Poll
  • Topic: Impact Craters
  • Donation:  Members R10 pp for tea and snacks
  • Donation:  Visitors 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 26 March 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 –
  • Apr –
  • May –
  • Jun –
  • Jul –
  • Aug –
  • Sep –
  • Oct –
  • Nov –

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

In the Night Sky for March 2017

It’s Autumn, “Seasons of mists and mellow fruitfulness” while winter and starry nights are yet to abound.

Our days grow shorter and nights longer, it is time to check our telescopes, prepare and look ahead to what we would like to photograph and observe.

March shows Orion in the north west with sometime left to photograph the beauties, the Orion nebula and the Horsehead. Pleiades and Taurus are dropping to the western, Castor and Pollux in constellation Gemini take command in the north.

Venus and Mars still shine brightly in the early evening while Jupiter and Saturn grace the Eastern late evening and early morning skies.

Cancer is one of the 12 Constellations, faint and difficult to see, it represents and evening challenge for in its’ midst is a swarm of stars – the Beehive cluster, also known as M44 or NGC2632.

Fan your binoculars and Telescopes all over the night sky and find this months jewels.

 

For more on “Whats Up” read in the March Canopus on the website.

Moon Phases:

Universe Today

Beads of rainwater on a poplar leaf act like lenses, focusing light and enlarging the leaf’s network [...]

Thu, Mar 30, 2017
Source: Universe Today
Venus inferior conjunction

Venus just 10.5 hours before inferior conjunction on March 25th. Image credit and copyright: Shahrin Ahmad (@Shahgazer)

Have [...]

Wed, Mar 29, 2017
Source: Universe Today

     Space.com

Asteroid 2015 BZ509 is the only known space rock in the solar system to travel in a retrograde orbit "while [...]
Wed, Mar 29, 2017
Source: SPACE.COM
As humanity hurtles through space and time toward the July 2017 release date of "Valerian and the City of a [...]
Wed, Mar 29, 2017
Source: SPACE.COM

Astronomy.com

The distribution of the Milky Way's satellite galaxies isn't a problem for the current cosmological model.

[...]
Wed, Mar 29, 2017
Source: Astronomy.com

Water, water, everywhere, and this is what it means for the search for alien life.

[...]
Tue, Mar 28, 2017
Source: Astronomy.com

APOD

Approaching

Approaching


[...]
Source: APOD
Is this an alien?

Is this an alien?


[...]
Source: APOD

Facebook

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.
Astronomy - ASSA Johannesburg Centre
Astronomy - ASSA Johannesburg Centre shared a link.Monday, March 13th, 2017 at 7:48pm
Astronomy - ASSA Johannesburg Centre
Astronomy - ASSA Johannesburg CentreFriday, March 10th, 2017 at 2:41pm
ASSAJHB Workday

It would be appreciated if members who will be helping please notify the committee so that we have an idea of what we can tackle on the day. Members have kindly offered to bring additional assistance such as treefellers. This needs to be addressed through appropriate consultation as there are costs involved.

Please note that this activity is weather dependent and may be cancelled at short notice.

Voortrekkers - The Voortrekkers have volunteered to assist with maintenance on the hill and we are very thankful for this gesture. However it must be appreciated that their activities need to be well coordinated and logistics put in place to assemble and transport the children so it is not expected that they will be available to help at any given time the society decides to do maintenance. There contribution whenever it takes place will certainly be appreciated.

Tractor Mowers
We will be inspecting the tractor mowers on 16 March Thursday so they will most probably not be ready for 18 March.

Areas
HBL - Herbert Baker Library Building - The stone building with the cupola on the roof.
Common - Lawn area where we set up telescopes and braai
Walkway - the path leading from the common past the Jacobs Telescope to the Viewing Deck
Parking area - The lawn and adjacent areas on the southern side of the road
Clubhouse - The proposed clubhouse on the corner at the top of the hill
Toilets - The two toilets next to the clubhouse
Western Ridge - the area to the west of the Viewing deck.

Refreshments and sausage rolls will be provided.

Saturday 11 March - Grass maintenance

We will be cutting the very long grass on the edges of the common and walkway to the viewing platform.
This is manual labour and we'll be cutting with slashers and brush cutters. The grass on the common and walkway has already been cut but will be tended to again on 18 March.

Saturday 18 March - Workday

The committee agreed that Saturday 18 March be set aside as a work day at the top of the hill.
Below are some of the things we need to work on.

The grass on the common and walkway will be cut with push mowers.

Grass next to HBL to be cut

Blackjacks and other weeds will need to be removed.

Small trees or branches trimmed from around the domes

The hedge next to HBL trimmed with hedge trimmers.

Parking area to be mowed and cleared with slashers.

Domes swept out and floors washed with water.

Telescopes and work surfaces dusted off.

Light bulbs replaced in HBL

HBL floor swept

Red and white light bulbs replaced in domes.

etc etc.

No optics will be cleaned on the workday. This is a specialist job and will be carried out when needed.

Please be aware there are possibly creepies and crawlies in the nooks and crannies. The geckos, lizards and birds have been doing a fine job of ousting them but there are some that even our little allies give a wide berth. Gloves are essential safety gear.
Astronomy - ASSA Johannesburg Centre
Astronomy - ASSA Johannesburg CentreFriday, March 10th, 2017 at 2:20pm
Pan - Fantastic images
Astronomy - ASSA Johannesburg Centre
Astronomy - ASSA Johannesburg Centre shared Antonio De Franca's photo.Thursday, March 9th, 2017 at 9:41am
Astronomy - ASSA Johannesburg Centre
Astronomy - ASSA Johannesburg CentreThursday, March 9th, 2017 at 9:36am
Most interesting and informative presentation on the Hartman Mask by Charlie Fleming and excellent presentation on the odd variable star QZ Carinae by Dave Blane at the monthly meeting 8 March 2017..
Astronomy - ASSA Johannesburg Centre
Astronomy - ASSA Johannesburg Centre shared a post.Wednesday, March 8th, 2017 at 8:32pm
Astronomy - ASSA Johannesburg Centre
Astronomy - ASSA Johannesburg CentreMonday, March 6th, 2017 at 1:53pm
Monthly Meeting

Date : 8 March 2017

Time : 19h15

Venue : Auditorium - Johannesburg Observatory, 18A Gill street, johannesburg

Speaker : Charlie Fleming

Topic : Hartman Masks
Astronomy - ASSA Johannesburg Centre
Astronomy - ASSA Johannesburg Centre shared a photo.Monday, February 27th, 2017 at 12:37am
Astronomy - ASSA Johannesburg Centre
Astronomy - ASSA Johannesburg CentreSunday, February 26th, 2017 at 11:21pm
Pimple on the moon. Sunspot AR2638 on limb of the moon.
Astronomy - ASSA Johannesburg Centre
Astronomy - ASSA Johannesburg CentreSunday, February 26th, 2017 at 10:17pm
Fortunate to catch the moon and sun setting at the same time.
Astronomy - ASSA Johannesburg Centre
Astronomy - ASSA Johannesburg CentreFriday, February 24th, 2017 at 9:05am
HI all

Unfortunately the Braai and Sky for Sunday 26 Feb is CANCELLED due the consistently poor weather conditions.

Regards

Jerome
Astronomy - ASSA Johannesburg Centre
Astronomy - ASSA Johannesburg Centre shared a link.Wednesday, February 22nd, 2017 at 4:43pm
Astronomy - ASSA Johannesburg Centre
Astronomy - ASSA Johannesburg CentreFriday, February 17th, 2017 at 11:11am
Public Viewing:
17 Feb 2017

CANCELLED
Astronomy - ASSA Johannesburg Centre
Astronomy - ASSA Johannesburg CentreWednesday, February 8th, 2017 at 3:34pm
ASSJHB Monthly Meeting

Speaker : Brian Fraser
Topic : A most important discovery in the field of meteoritics.
Venue: Auditorium
Time : 19h30
Date : 8 February 2017

Johannesburg Observatory
18A Gill Street
Observatory
Johannesburg

Jerome Jooste
Chairman ASSAJHB
Astronomy - ASSA Johannesburg Centre
Astronomy - ASSA Johannesburg CentreTuesday, February 7th, 2017 at 12:05pm
The meeting will take place as scheduled on 8 February and not 10 February as indicated in the earlier post.

Speaker : Brian Fraser
Topic : A most important discovery in the field of meteoritics.
Venue: Auditorium
Time : 19h30
Date : 8 February 2017

Johannesburg Observatory
18A Gill Street
Observatory
Johannesburg

Jerome Jooste
Chairman ASSAJHB
Astronomy - ASSA Johannesburg Centre
Astronomy - ASSA Johannesburg CentreMonday, February 6th, 2017 at 8:22pm
Ephemeris for 45P covering 9 - 25 Feb 04h00 SAST.

Azi - South = 0 deg

Twitter

Sunday, March 26th, 2017 at 5:38am
ASSAJHB
SKY and BRAAI - 26 March - CANCELLED
Unpredictable weather.
Friday, March 17th, 2017 at 11:58am
ASSAJHB
Public Viewing - 17 March 2017
CANCELLED - Unpredictable weather
1
Friday, March 17th, 2017 at 7:43am
ASSAJHB
Public Viewing
18A Gill Str, Observatory
Late Summer Sky
19h30 - 22h00
https://t.co/Wt1nkBhI5c
Monday, March 6th, 2017 at 11:00am
ASSAJHB Monthly Meeting
8 March 2017 - 19h15
Auditorium - Jhb Observatory
Speaker : Charlie Fleming
Topic : Hartman Masks
Friday, February 24th, 2017 at 6:30am
ASSAJHB
Unfortunately the Braai and Sky for Sunday 26 Feb is CANCELLED due the consistently poor weather conditions.