Observing for Tonight Saturday 24th September is OFF.

24 09 2016

Despite the beautiful day the weather is predicted to be very cloudy, with a fair chance of rain by mid-evening.
Lawrie Webb.

NSAS September General Meeting

18 09 2016
Our general meeting for September will be held this Tuesday the 20th, at 7:30pm.
This month our guest lecturer is Dr. Duncan Wright, Postdoctoral Fellow at the Dept. of Astrophysics and Optics, UNSW, who will be giving a talk titled “What is the future for discoveries of low-mass exoplanets?”.  His abstract is as follows:
Many of the low mass exoplanet discoveries are made using high precision doppler velocities. These planets have typical Doppler velocity amplitudes of <2 m/s, similar to the uncertainty in each measurement, and often similar to the Doppler amplitude of stellar activity (intrinsic variation in the star appearing as a Doppler shift). New technologies claim/aim to achieve Doppler precisions of ~10cm/s, and that this will enable the discovery of Earth mass exoplanets in an Earth-like orbits i.e. arguably the major goal of exoplanet discovery. I will discuss the techniques and limitations  involved in detecting a low mass exoplanet from high resolution spectra with a focus on new technologies, and I will try to answer whether these are the methods that will be finding Earth 2.0's in the near future. 

Solar Observing for today, Sunday September 18th is OFF.

18 09 2016

The peak of this Solar Cycle is behind us now. We are running out of opportunities to see the fantastic phenomena our nearest star displays. Let’s hope for a sunny day in four weeks time.
Lawrie Webb.

September 2016 Events

18 09 2016
Here are the events that we have on this month.  I look forward to seeing you at one of them!


Night time observing is scheduled for Saturday the 24th.  We will be observing from our site in Terry Hills.

Solar observing is scheduled for Sunday the 18th.  If you’re not on the email list for ON/OFF notifications, let me know and I’ll pass on your details to Lawrie.  The solar observing group meets near the observatory at St Ignatius at from 11am to 1pm.

General Meeting

We have our general meeting on Tuesday the 20th.  Our guest lecturer is Dr. Duncan Wright, Postdoctoral Fellow at the Dept. of Astrophysics and Optics, UNSW.  I don’t have his abstract yet, but will send it out in the reminder email prior to the meeting.

The New Astronomer’s Group

This month we have our sixth session of the New Astronomer’s Group (NAG) course.  It will be on Tuesday the 27th.  Irene Justiniano will be talking about solar system and deep space objects.  I will also be doing part 2 of my resources talk, and then if the sky is clear we’ll try and get outside for some practical observing again.


I’ve had a request from a student at Macquarie University who wants to interview a member of the society for a project they’re doing.  If you’re willing to help out, please let me know and I’ll put you in touch.


– A couple of members (thanks Murray and Bob) noted that there’s a live event (MARS – The Live Experience) featuring Buzz Aldrin on November 6. Tickets can be purchased from Ticketek.

– For those who missed it on Foxtel a couple of years ago, Cosmos: A Spacetime Odyssey hosted by Neil deGrasse Tyson is now showing on free to air TV (channel 9Gem) at 8:40pm Mondays.

Observing for Tonight, September 3rd, is ON.

3 09 2016

The sky should be clear but it will be windy, so rug up well. It’s not going to be great for imaging unless you’ve got a well-damped rig. Access to the site from 5pm. Please note that tonight is strictly MEMBERS ONLY. Lawrie Webb.