Episode 17: Space Telescopes!

with Dr Steve Crawford and Professor Jayanne English

In Episode 17 of The Cosmic Savannah, we discuss space telescopes! We talk about the amazing Hubble Space Telescope and the upcoming James Webb Space Telescope (JWST).

Jacinta gleefully visiting the James Webb Space Telescope.

We sit down with Dr Steve Crawford from the Space Telescope Science Institute (STScI) in Maryland, USA, and formerly SALT. Steve explains how his team deliver data from space telescopes to scientists on Earth.

Professor Jayanne English from the University of Manitoba, Canada, then gives us insight on how she and others create the beautiful images we see from the Hubble Telescope. And how the myriad of data collected is incorporated into one beautiful image.

Prof Jayanne English signing Jacinta’s book!

This week’s guests:

Featured Image:
The CTB 1 supernova remnant resembles a ghostly bubble in this image, which combines new 1.5 gigahertz observations from the Very Large Array (VLA) radio telescope (orange, near center) with older observations from the Dominion Radio Astrophysical Observatory’s Canadian Galactic Plane Survey (1.42 gigahertz, magenta and yellow; 408 megahertz, green) and infrared data (blue). The VLA data clearly reveal the straight, glowing trail from pulsar J0002+6216 and the curved rim of the remnant’s shell. CTB 1 is about half a degree across, the apparent size of a full Moon.

Credits: Composite by Jayanne English, University of Manitoba, using data from NRAO/F. Schinzel et al., DRAO/Canadian Galactic Plane Survey and NASA/IRAS

Related Links:
SALT: http://www.salt.ac.za
The Space Telescope Science Institute: http://www.stsci.edu/
University of Manitoba: http://umanitoba.ca/
The Hubble Heritage Project Website: heritage.stsci.edu

Episode 1: SALT and Near-Earth Asteroids

with Dr Moses Mogotsi and Dr Nicolas Erasmus

Welcome to the very first episode of The Cosmic Savannah!

In this episode, we introduce ourselves and our vision for the podcast, SALT Astronomer Dr Moses Mogotsi describes what it’s like to use the biggest optical telescope in the Southern Hemisphere and Dr Nicolas Erasmus tells us about the hunt for near-earth asteroids.

The Sutherland Plateau, SAAO.
SAAO Researcher Dr Nicolas Erasmus and his MSc student Petro Janse Van Rensburg observed a large (1-2 km) asteroid passing Earth at about 75 times the distance to the moon. But in the background, a distant spiral galaxy!

The Cosmic Savannah is created and hosted by Dr Jacinta Delhaize and Dr Daniel Cunnama.

Jacinta is a radio astronomer based at the University of Cape Town. She is a South African Radio Astronomical Observatory (SARAO) Postdoctoral Research Fellow. Dan is the Science Engagement Astronomer at the South African Astronomical Observatory (SAAO).

Episode Links:
SAAO: http://www.saao.ac.za
ATLAS: http://atlas.fallingstar.com
SALT: http://www.salt.ac.za
Minor Planet Center: https://minorplanetcenter.net/

SARAO: https://www.ska.ac.za/about/sarao/
UCT Astronomy: http://www.ast.uct.ac.za/
African VLBI Network: https://www.ska.ac.za/science-engineering/avn/

This week’s guests: