Next AS talk
The talk is about a particular class of variable stars — the pulsating white dwarfs. The talk will initially cover where white dwarfs occur in the course of a stellar evolution. It will then move
into a general discussion of types of stellar pulsation and the mechanism which causes stars to pulsate. Finally, it will take a tour of a number of light curves of actual pulsating white dwarfs and discuss what can be learned from them.
When: Thursday, November 5th, 7.30 – 9.00 pm
Where: Milton Building, corner of Halifax and Milton Streets.
Bill studied at the University of Canterbury, and has worked at Mt John University in the past. He has recently retired to Nelson.
Wai-iti Dark Sky Park
Congratulations to Ralph Bradley and the ‘Top of the South Dark Sky’ committee and its online identity ‘Dark Skies Tasman’ for their five years of hard work and their success in getting the Wai-iti Recreation Reserve and Tunnicliff Forest designated New Zealand’s first ‘Dark Sky Park’.
The park covers 135 hectares of Tasman District Council (TDC) land, located 4km south of Wakefield, and accompanies existing International Dark Sky Association (IDA)-recognised Dark Sky Reserves and Sanctuaries in Aoraki-Mackenzie, Stewart Island/Rakiura and Aotea/Great Barrier.
To celebrate the Dark Sky Park’s establishment, free “star parties” will be held on July 11 and 12 from 6.30pm at the Wai-iti Recreation Reserve, weather permitting. Please register for the star party events on the Dark Skies Tasman website.
Observatory viewing nights and next talk
CAWTHRON ATKINSON OBSERVATORY VIEWING NIGHTS:
These have resumed, and are held on each clear Friday evening until the end of September, 7.30pm to 9.30pm, Cawthron Atkinson Observatory, Clifton Terrace School, Atawhai, Nelson. Observe various objects through our C14 telescope, and some of our other, portable, telescopes. For the rest of the year the planets Jupiter and Saturn will be in the evening sky for viewing. Charges are (cash only) $5 per person, $15 families. Astronomy Section members free admission. If further information is needed please contact Hamish Barker, Astronomy Section Convenor, on 0226760897.