Date: Wed Aug 22 16:47:07 2007

Author: Paul Nord

Subject: Re: Fwd: Help with inexpensive planetarium

Post:

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You might be able to do it with a standard LCD projector and a
hemispherical mirror. I've heard that's being done.

I'm not sure how close that will get you to to $1000. Nor if there
is software to do this easily.

You won't get the typical planetarium experience because you can't
get good contrast from a standard LCD projector. You get lots of
scattered light from openings in the projector. And the "black" on
the screen isn't much better than dark grey. But there is a new
technology that I'm told does better than LCD and boasts incredible
contrast ratios. But they're not in your price range.

Paul


On Aug 22, 2007, at 3:28 PM, Gerald Zani wrote:

> David,
>
> I recommend using the starry night software on a computer with a
> class room projector
> http://www.starrynightstore.com/
> It is excellent. This is what we use at Brown U.
>
> All of the planetarium projection systems and domes that I've seen
> are too expensive.
>
> I called Sky-Skan and asked them. They said there isn't anything
> in that price range.
>
> These are all too costly, I think.
> http://www.e-planetarium.com/about.htm
> http://www.skyskan.com/
> http://www.starlab.com/
>
> I recommend using the starry night software.
>
>
> Good Luck,
> -- JZ
>
>
> At 12:28 PM 8/22/2007, David Maiullo wrote:
>> Hi Tappers,
>>
>> Could anyone out there please help this gentleman? Please copy
>> him your reply, or reply to him directly, as I doubt he's on tap-l.
>>
>> Thanks in advance,
>> Dave/RU
>>
>>> I want to find a good planetarium projector for my high school
>>> Astronomy class. I can find toys and then $25-50 k ones, but
>>> nothing around $1000. Perhaps you can help. ThanksJ
>>>
>>> Jeffrey C. McKay
>>>
>>> Physics Instructor
>>>
>>> Major S.C.
>>>
>>> U.S.A.R. Ret.
>
> Gerald Zani e-mail: Gerald_Zani@brown.edu
> Manager of Demonstrations phone: (401) 863-3964
> Department of Physics FAX: (401) 863-2024
> Brown University Providence, RI 02912-1843 USA
>
> http://www.physics.brown.edu/physics/demopages/demo/
> http://www.physics.brown.edu/physics/userpages/staff/Gerald_Zani/
> index.html
>
> Do a little more of that work which you have confessed to be good,
> Which you feel that society and your most Just Judge rightly demand
> of you.
> Cultivate the tree which you have found to bear fruit in your soil.
> If you have any experiments you would like to try, try them.
> Now's your chance.
>
> Henry David Thoreau, Journal entry, 1850.
>


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I'm not sure how close that =
will get you to to $1000.=A0 Nor if there is software to do this =
easily.You =
won't get the typical planetarium experience because you can't get good =
contrast from a standard LCD projector.=A0 You get lots of scattered =
light from openings in the projector.=A0 And the "black" on the screen =
isn't much better than dark grey.=A0 But there is a new technology that =
I'm told does better than LCD and boasts=A0incredible contrast ratios.=A0 =
But they're not in your price range.PaulOn Aug 22, =
2007, at 3:28 PM, Gerald=A0Zani wrote: David, I recommend using the starry night software on =
a computer with a class room projector http://www.starrynightstore.com/ It is =
excellent.=A0 This is what we use at Brown U. All of the =
planetarium projection systems and domes that I've seen are too =
expensive. I called Sky-Skan and asked them.=A0 They said there =
isn't anything in that price range. These are all too costly, I =
think. http://www.e-planetarium.com/about.htm http://www.skyskan.com/ http://www.starlab.com/ I recommend =
using the starry night software. Good Luck, -- =
JZ At 12:28 PM 8/22/2007, David Maiullo wrote: =
Hi Tappers, Could anyone out there please help this =
gentleman?=A0 Please copy him your reply, or reply to him directly, as I =
doubt he's on tap-l. Thanks in advance, Dave/RU =
I want to find a good =
planetarium projector for my high school Astronomy class.=A0 I can find =
toys and then $25-50 k ones, but nothing around $1000.=A0 Perhaps you =
can help. ThanksJ Jeffrey C. McKay Physics =
Instructor Major=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0 S.C.=A0=A0 =
U.S.A.R.=A0=A0=A0=A0=A0=A0=A0=A0 =
Ret. Gerald =
Zani=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0<=
X-TAB>=A0=A0=A0=A0=A0=A0=A0=A0e-mail: Gerald_Zani@brown.edu =
Manager of Demonstrations=A0=A0=A0=A0=A0=A0=A0phone: =
(401) 863-3964 Department of =
Physics=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0FAX:=
=A0=A0 (401) 863-2024 Brown =
University=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=
=A0=A0Providence, RI 02912-1843 USA =A0 http://www.physics.brown.edu/physics/demopages/demo/ http://www.physics.brown.edu/physics/userpages/staff/Ge=
rald_Zani/index.html =A0 Do a little more of =
that work which you have confessed to be good, Which you feel =
that society and your most Just Judge rightly demand of you. =
Cultivate the tree which you have found to bear fruit in your =
soil. If you have any experiments you would like to try, try =
them. Now's your chance. Henry David =
Thoreau, Journal entry, 1850. =
=

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