Durbanville Public Library – Talk on Women in Astronomy: Monday 29th February 2016.

On Monday afternoon Lynnette and I set of for the Durbanville Public Library where I had been invited by Ari van Dongen to give a talk titled “Women in Astronomy”. Ari, viagra Tony Jones, order Lynnette and I were there nice and early so that we had enough time to set op projectors and make sure the laptops were all talking to the respective projectors.

Myself on the left and Ari van Dongen on the right (back to the camera) making sure all the connections are connected and all the signals are going to the right places.
Myself on the left and Ari van Dongen on the right (back to the camera) making sure all the connections are connected and all the signals are going to the right places.

Tony was first up and ran through a comprehensive “What’s up” for those who were interested in finding currently visible celestial objects.

I followed Tony and thought my talk went of fairly well. I did get the impression that one or two of the male members of the audience might have been a tad uncomfortable though.

The title slide of my talk.
The title slide of my talk.
Question time after my talk chaired by Ari. I do not know what on earth I was trying to explain with that expansive gesture.
Question time after my talk chaired by Ari. I do not know what on earth I was trying to explain with that expansive gesture.

After my talk Lynnette and I had to leave as we had matters to related to our National Science Week grant proposal to finalize. This meant that we unfortunately missed Ari’s video.

The next meeting is on the 25th of April and Ari has invited me to give my talk on the geology of the Western Cape titled “Once upon a time when the Western Cape was much younger. The tale of why everything isn’t just flat or all the same all over the place.”

The Carina Nebula by Leslie Rose: 02 December 2015.

The Carina Nebula is about 7500 light years away in the direction of the Carina constellation. Carina was originally part of a very large constellation Argo Nevis but Nicolas de Lacaille divided it into three new constellations in 1763, see Carina (the keel), Puppis (the poop deck) and Vela (the ship’s sails). It is also known as NGC 3372 and was discovered in 1751 by Nicolas Louis de Lacaille, while observing from the Cape of Good Hope. It is a colossal emission nebula about 300 light years wide that contains extensive star forming regions. A very interesting object in the Carina Nebula is the Homonculus Nebula which is a planetary nebula that is being ejected by a luminous blue variable star, Eta Carinae (shorthand ? Carinae or ? Car). This star is one of the most massive stars known and has reached the theoretical upper limit for the mass of a star and is therefore unstable. The instability results in periodic outbursts during which it brightens and them fades again. During one such outburst between the 11th and the 14th of March 1843 it became the second brightest star in the sky but then faded away. Around 1940 it began to brighten again, eventually peaking in 2014 but not achieving nearly the levels of brightness seen in 1843.

This chart shows the location of the Carina Nebula within the constellation of Carina (The Keel). The map shows most of the stars visible to the unaided eye under good conditions and the nebula itself is marked as a green square in a red circle at the left (labelled 3372 for NGC 3372).
This chart shows the location of the Carina Nebula within the constellation of Carina (The Keel). The map shows most of the stars visible to the unaided eye under good conditions and the nebula itself is marked as a green square in a red circle at the left (labelled 3372 for NGC 3372).

This nebula is very bright and can be seen well in small telescopes, and faintly without a telescope at all. The original of this chart may be viewed here.

Leslie Rose is one of the regulars who attend the Southern Star Party and the photograph featured here, was taken by Leslie. The first SSP he attended was in March 2011 when Leslie had neither telescope nor camera!

For this image of the Eta Carina Nebula Leslie employed a narrow band filter with the Hubble pallet and an Atik 383l mono CCD camera. The image was taken through a Celestron Nexstar 8SE tube on a Celestron CGEM equatorial mount. The total exposure time was 10.7 hours and it was shot from a suburban environment in Durbanville, Western Cape, South Africa.
For this image of the Eta Carina Nebula Leslie employed a narrow band filter with the Hubble pallet and an Atik 383l mono CCD camera. The image was taken through a Celestron Nexstar 8SE tube on a Celestron CGEM equatorial mount. The total exposure time was 10.7 hours and it was shot from a suburban environment in Durbanville, Western Cape, South Africa.

This photograph was the winner of Celestron Telescopes South Africa’s November Nights competition. Celestron commented that the quality of the pictures they received was amazing and really showcased the beauty of the South African Night Skies. Go here to view Celestron’s Facebook page or, if you wish to visit the Celestron webpage, click here.

Leslie’s prize was a pair of Celestron UpClose G2 10×50 Binoculars. Congratulations Leslie and thank you Celestron for running competitions like this to encourage astrophotographers.