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One option you may want to consider is a "digial" heliostat. We didn't
have enough sunny days here in Iowa (as is likely in the UK!)to justify
a real heliostat. In addition, contractors abhor the thought of cutting
holes in the roof a building. We had Jeff Kennedy Associates design a
system whereby a projector displays daily satellite images of the Sun
onto a table. The participant can select visible, ultraviolet and x-ray
wavelengths and using a joystick can scroll forward or backward in time.
It really gives a good sense of the Sun's rotation, as well as being
able to correlate sunspots with active UV and X-ray regions.
We also have an activity where students use ratios to determine the size
of the Earth and other planets compared to the size of the projected
Sun.
Kristian Anderson
Director of Platforms and Experience Development
Science Center of Iowa & Blank IMAX Dome Theater
401 W Martin Luther King Jr. Parkway
Des Moines, IA 50309
(515)274-6868 ext. 235
(515)274-3404 FAX
www.sciowa.org
P Please do not print this email unless it is absolutely necessary.
Spread environmental awareness.
-----Original Message-----
From: Informal Science Education Network
[mailto:[log in to unmask]] On Behalf Of Harry White
Sent: Wednesday, April 02, 2008 3:47 PM
To: [log in to unmask]
Subject: Heliostat
ISEN-ASTC-L is a service of the Association of Science-Technology
Centers
Incorporated, a worldwide network of science museums and related
institutions.
************************************************************************
*****
Does anyone know of a vendor of display Heliostats? I know of the
Sunspotter
but I'm looking for something larger and more spectacular.
Thanks
--
Harry White, Science Centre Consultant
Techniquest, Stuart Street, Cardiff, UK. CF10 5BW
Tel: +44 (0) 29 20 475 475, Direct: +44 (0) 29 20 475 464
Fax: +44 (0) 29 20 482 517
Mobile +44 (0) 7725 420 910
Web: http://www.techniquest.org
Techniquest is a Company Limited by Guarantee,
registered in England and Wales, no. 1955696
It is a registered as a charity, no. 517722
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For information about the Association of Science-Technology Centers and the Informal Science Education Network please visit www.astc.org.
Check out the latest case studies and reviews on ExhibitFiles at www.exhibitfiles.org.
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