Showing posts with label Transit of Venus 2012. Show all posts
Showing posts with label Transit of Venus 2012. Show all posts

Tuesday, 5 June 2012

Transit of Venus seen from New Zealand.




The transit of Venus photographed from the New Plymouth observatory, North Island, New Zealand.

As cold, cloudy scenes make murky some parts of New Zealand, others are finding clear skies where the transit of Venus can be viewed from.

The planet began to pass in front of the sun at 10.15am today Wednesday 06 June and continues to 4.43pm.

It is a rare astronomical event and won't be seen again until 2117.
In Wanaka, lanscape photographer Gilbert van Reenen has described the event as "exhilarating".
"It was quite uplifting really, just seeing it move across the surface of the sun.
"I called my wife and friends and they could see it as well. There were a few yahoos."
Van Reenen said there were clear skies in Wanaka this morning, but the clouds were now moving in.
"It's not going to last long. I can still see the transit through the cloud, which is quite amazing."
Skies have been clear in Auckland allowing astronomy researchers and the public to get a clear view of the transit.

Researchers from AUT set up a telescope in the courtyard of the Stardome Observatory at One Tree Hill so the public could get a glimpse of the solar event.
A camera was attached to the telescope so those unable to head down to the observatory could access a live feed of the event online.
Researcher Tim Natusch said the live feed would be replaced with one from Nasa, or other areas in the world that have a clear view of the transit, if cloud became a problem.
Natusch said two more telescopes would also be set up at the Auckland Domain this morning.
"We're hoping people will come along and get a good view of Venus," he said.


PHOTOGRAPHY
Photographs of the transit of Venus vary in composition depending on where and how they are taken.
In the Southern Hemisphere Venus appears to cross the Sun starting from the bottom right.
In the Northern Hemisphere Venus appears to cross the Sun starting from the top left.
Photographs taken through telescopes also reverse the natural perspective of the transit.

A month or so ago I wrote an article about my Great Grandfather, James McKerrow who observed the Transit of Venus in the 1870s in New Zealand. See link on James McKerrow and transit of venus.

Thanks to Fairfax News New Zealand for permission to use extracts from the article.


Wednesday, 16 May 2012

Some history on the Transit of Venus


Jeremiah Horrocks makes the first observation of the transit of Venus in 1639

At breakfast the other morning, my son Ablai mentioned that a Transit of Venus is appearing next month. I reminded he and his brother Mahdi that their Great-great-grandfather James McKerrow observed the Transit of Venus in 1885, near Wellington in New Zealand.

There is a really good link on stuff website that explains more.


McKerrow had his own wide ranging interests. He was a competent astronomer and, in December 1882 made the arrangements for the observation of the transit of Venus when New Zealand was visited by American and British scientists.

A number of observers, including five parties from the Survey Department, set up in different places while McKerrow, using a five-inch equatorial telescope of fifty inch focal length, secured a splendid set of observation from Boulcott Street in Wellington.

For this he was elected a Fellow of the Royal Astronomical Society. In recognition of his early survey work in Otago and Southland he was elected a Fellow of the Royal Geographical Society and of the New Zealand Institute of Surveyors


However, on my James McKerrow blog, I wrote:

In 1882 Jame McKerrow observed the Transit of Venus, and in 1885 he was elected a fellow of the Royal Astromnomical Society, and this was taken from their journal:

Since this was New Zealand's only total solar eclipse a glance at reports from other parts of the country may be of interest.
No one would have blamed Wellington observers for going elsewhere to observe the eclipse but as it turned out they would have done better to have stayed at home. At Wellington the dark shadow of totality was seen rushing toward the city and then came the "beautiful flood of white light which surrounded the moon". Coronal rays extending for from two to three solar diameters were seen, as well as a large red prominence "conspicuous on the right". The weather was described as "most favourable in a southerly gale".
Wellington observers who moved closer to the central line of eclipse, however, did not see as much. Dr Hector (after whom the Dominion Observatory was formerly named), together with Archdeacon Stock (who had predicted the end of the world from the comet of 1883) and Messrs Adams (later Dr Adams, the Dominion's first professional astronomer), McKerrow, Humphries, Travers and Beverley went to Masterton, selecting sites on Rangitumau and Otahiaho hills. They saw the eclipse through a watery sky which dimmed its beauty. Bailey's Beads were seen, as well as coronal rays extending only half a solar diameter from the sun's limb. Mr Humphries got good photographs of the beads, corona and prominences.