Vale Les Dalrymple (1962 - 2024)
By Jeff Portelli Les Dalrymple was passionate about astronomy, and an exceptionally knowledgeable and experienced amateur astronomer. He...
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Toner Stevenson
- Jul 18
- 1 min
Our active Sun! July 2024
Sydney City Skywatchers member Garry Dalrymple has been observing sunspot activity lately with a small aperture telescope fitted with a...
Garry Dalrymple
- Mar 31
- 3 min
How Good is your Night Sky?
An easy-to-use walk around guide. By Garry P. Dalrymple The visibility of the stars and the planets is a restriction placed on all of us...
Toner Stevenson
- Mar 7
- 5 min
Women who measured stars for the Great Star Catalogue: Margaret Colville and Winsome Bellamy
Dr Toner Stevenson, History Affiliate, School of Humanities, The University of Sydney This blog post is to recognise Margaret Colville...
Elizabeth Cocking
- Feb 7
- 2 min
Did you know? Binary Stars
The dictionary defines binary as “composed of or involving two things”, so a binary star is a system composed of two stars which orbit ...
Elizabeth Cocking
- Oct 31, 2023
- 4 min
Astronomical happenings in November
11th November 1572 Supernova SN1572, also called B Cassiopeiae, is first observed by Danish astronomer, Tycho Brahe. The “new star” was...
Elizabeth Cocking
- Jun 12, 2023
- 1 min
Did you know? Orion's Belt
Located in the constellation of Orion the Hunter, his belt is unmistakeable in the night sky. Orion’s belt consists of three evenly...
Elizabeth Cocking
- May 28, 2023
- 4 min
Astronomical anniversaries in the month of June
25th June 1997 A Russian uncrewed cargo spacecraft collides with the Mir Space Station during a docking attempt knocking out much of its...
Elizabeth Cocking
- Apr 30, 2023
- 3 min
Astronomical anniversaries in the month of May
15th May 1618 Johannes Kepler discovers the mathematical rule governing the orbits of our solar system’s planets. The image left is...
Toner Stevenson
- Apr 15, 2023
- 3 min
Ningaloo Solar Eclipse chasing
Toner Stevenson, vice president Sydney City Skywatchers, Saturday 15 April 2023. Experiencing a total solar eclipse is a spectacular and...
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