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New Guest-book from July 2005 here
Messages from:
The above messages have been moved from this page because they are complex stereo mathematics and are better presented in chronological order, just as the ideas developed.
The following are on this page:
(January 2004)
Thank you so much for this visual treat! I came to see the Southern Cross (I hope to be in Kenya in May) and am delighted you have given me so much information. The other photos are just exquisite as well. You have given me a sneak preview of the sky from the southern hemisphere, a lifelong dream. Thanks again,
Phyllis Hopkins
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Above is the last guest book message from e-mail because the address
has been closed. It is a pity such a wonderful invention as e-mail has
been compromised by cyber-vandals and barbarians sending huge
amounts of spam. Lycos claim they have a spam filter - well, it does
not work! |
The author has reluctantly returned to snail mail for communications:
Messages before 2004 deleted. Messages below from snail-mail. The rate of communication has dropped hugely - of course. Last message at the top of the page. Seems odd to work backwards, but that seems traditional in guest-books, so the index above may help. |
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August 2004 My company is involved in the manufacture of microwave wireless radios. I would like to enquire about licensing the use of up to five of your online images for use in a corporate PowerPoint presentation ... (details deleted) Ian Atwood, Channel Manager, 4RF communications. I will send you a CD sampler of images which have been professionally drum scanned and are suitable for printing at very high resolution. The samples are low resolution versions with labels, but there are more on the CD than available on the web site and at higher resolution. The samples could be used as-is in a Power Point presentation (and have been by another organisation promoting NZ). If you want better resolution, with or without labels, choose them from the CD and I will send you what you want. - John Wattie.
August 2004 I was reading your web site and had a question about the formation of New Zealand. One source, possibly dubious, stated NZ rose from the sea about 26 million years ago, and another source stated that it was once part of Gondwanaland 200 million years ago, then Australia and New Zealand broke away. I appreciate your help, if you can clear this up. Best regards, Andrew Turrini, Spokane WA (USA) I am not surprised you are confused Andrew. Amazing as it may seem, both statements are correct! Tectonic pages given in NZPhoto are simplified, amateur skeletons of the subject for tourists who do not want to know too much, but I should have explained this timing better.
Three main mountain building phases are recognised, which are given local names: Tuhua, Rangitata and Kaikoura orogenies. ("Orogeny" is the process of making mountains).
During and after mountains of the second, Rangitata phase eroded away and New Zealand nearly submerged yet again, the Tasman Sea was opening and separated Zealandia from Australia. The Tasman Sea later stopped opening and fused with Australia as the eastern part of the Indo-Australian plate. Then renewed Pacific Plate motion from the east to west collided with the Australian plate and crumpled up a new set of mountains. This last, Kaikoura orogeny, started as you say about 26 million years ago and is continuing even now. So the present mountains of New Zealand are young, less than 26 million years since they started emerging from the sea. Because New Zealand mountain building always came from the Pacific Plate colliding with the Indo-Australian plate, the three mountain phases are roughly represented by vertical bands running North/South. In general, the oldest rocks are found to the west and the youngest rocks on the east of the country. Tuhua and Rangitata rocks to the west, which eroded from ancient mountains, are now "basement rocks" and often lie under more recent sedimentary rocks. (I have sent Andrew an e-mail explaining this more fully and will shortly revise the account on the web site to include the answer to his excellent question) - John Wattie
February 2004 Hi John
I was wandering around your web site [3D
section] and I found your reference to the Keystone Telebinocular under
stereo viewers.
Here's what I have discovered so far on the
Keystone Telebinocular.
The name was first applied to the handheld
model, because it resembled a binocular, see attached picture from about the 1920's. I have one of these.
Then there was the Art Deco model from 1935
to 1955, see attached picture and see this link,
The Art Deco style was continued from the '50's to present day [yes
still available new from Keystone for $95] in the form of the No 50 Home
Training Stereoscope, although now known as the 3101 Closed Stereoscope.
See http://www.keystoneview.com/results/hvtm_sht.asp
I have a No 50 model, and its a very nice
hand held 'scope for Holmes cards, wide enough to wear spectacles too.
• Lens separation of 85 mm accommodates varying PDs as well as adequate base-out stimulation
Now, the Telebinocular you refer to is known
as the Visual Survey Telebinocular and was/is produced for the General
Purpose vision testing market. Similar models are still produced for
Driver Testing, Ophthalmology and Industrial screening, see http://www.keystoneview.com/results/dsi_telebin.asp
Dr T has a very good description of the VS
Telebinocular, originally known as the Model 46B, or C. [the 46A did not
have achromatic lenses], see http://home.att.net/~drt-3d/toys/KeystoneVS/
Confused yet ?
Alec Kennedy
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The
land of "Zealandia" is mostly under the sea. At various times
bits of it come above sea level only to be eroded away again because sedimentary
rocks, which make up much of the country, are weak (Greywacke, mud-stones,volcanic
ash). 
In
between intermittent mountain building phases, New Zealand was eroded
down to swamps and then submerged. A few islands must have survived
to provide habitats for the unusual local life forms, or they would
have vanished. 
