Above: The 2011 July 19 Occultation of the magnitude 6.7 star HIP 112420 by binary Asteroid 90 Antiope. The combined result of timing observations by 56 observing stations in North America by mostly amateur observers, organised by the International Occultation Timing Association (IOTA). This is the best information ever obtained on this asteroid system. See the Wikipedia article on 90 Antiope.
Astronomy
- Astronomical Society of Victoria
- List of Astronomical Societies in Australia
- Royal Astronomical Society of New Zealand
- Royal Astronomical Society of New Zealand (RASNZ) Occultation Section
- Steve Preston Asteroidal Occultation Astrometric Updates
- Mornington Peninsula Astronomical Society (was: Frankston), Victoria
- Mount Burnett Observatory, Emerald, Vic
- Astronomical Society of South Australia Occultation Special Interest Group
- Ballarat Astronomical Society and Municipal Observatory, Victoria
- Auckland Stardome Observatory, New Zealand
- The Astronomical League (US) useful links
- International Occultation Timing Association (IOTA)
Item of sentimental personal technical interest: Radio VNG
Resources for Observers:
- Astronomy Yearbook (ephemeris, new for each year)
- SkyMaps – Download monthly star and planet charts for your hemisphere and latuitude (Kym Thassaloudis)
- Cloud Cover over South Eastern Australia (SSO / NOAA site)
- The World Atlas of the Artificial Night Sky Brightness
- David Chandler Planisphere (for Southern Hemisphere)
Local Documents:
- Visibility of evening objects 2019 in southern Australia
- What can we do with a small or old telescope
- Finding the Andromeda Galaxy from Melbourne
- Contrast Improvement by simple baffling
Marj Alf Tufi2 