The forest is no more at risk from a large scope than from a small scope. It is pretty hard to get enough energy out of a scope and across a distance large enough to do any damage. The image, and the energy in the image, spread out very quickly and become a non-problem. Brent --- John and Lisa Zeigler <john@johnstelescopes.com> wrote:
We have a 1/4" plywood shield over our mirror on the truss tube Dob. It sits about an inch over the mirror on three screws from the mirror cell. This protects it from wind, rain, dust, and the forest from harm.
Lisa Zeigler www.johnstelescopes.com www.mirrorkits.com
-----Original Message----- From: Debbie [mailto:astrodeb@earthlink.net] Sent: Tuesday, September 28, 2004 1:17 PM To: Utah Astronomy; Utah Astronomy Subject: RE: [Utah-astronomy] Re: Star party etiquetteforcrumbcrunchersandparents
That is another reason I don't like to leave my scope up during the daytime, besides animals getting to it. A big dobsonian could cause a forest fire or blind someone.
Debbie
[Original Message] From: Patrick Wiggins <paw@trilobyte.net> To: Utah Astronomy <utah-astronomy@mailman.xmission.com> Date: 9/28/2004 11:10:18 AM Subject: [Utah-astronomy] Re: Star party etiquette forcrumbcrunchersandparents
I seem to remember many years back a star party up by Kamas where Brent's monster scope ended up catching a frisbee or two. But then I seem to also remember that later in the day the scope became a chimney
when sunlight found its way to the primary mirror and smoke was seen emanating from the tube...
Patrick
Chuck Hards wrote:
Don't be so sure; I've seen many telescopes
(present company
excepted, of course) that may as well have been trash-cans...
--- John and Lisa Zeigler <john@johnstelescopes.com> >
Solid tube Newtonian telescopes, no matter how much they look like
trash cans or basket ball hoops are not for throwing things into..
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