I will be going to a planetarium conference and would like show everybody there all of the great work you guys have had over the past year. Please send...
hi, i have made a "low cost" fisheye videoplanetarium http://astrosurf.com/lhoumeau/planetariums/fr/index.htm my new projector isnt yet on line (please wait ;)...
Very nice! You've got me drooling. I don't know if this has been mentioned before, But I should caution anyone who is going to build a fisheye projector. Make...
Those are to small to work. Just stick with the 24" one's. ... From: vdelm <vdelm@...> To: small_planetarium@yahoogroups.com Sent: Monday, October 8,...
... When I saw the cosemodome system for the first time, I realized this: Even when your mirror is a full quartersphere (x*x+y*y+z*z=r*r, y>=0, z>=0) you will...
... You do not need to cut it. But when you order, you can already order a cropped mirror. The advantage is mostly transportability. ... The projector lens is...
... You may be disappointed. I suggested you get the 60cm (12") version, I should have said why. Most commodity projectors will not focos on an image that...
Sorrym slight error in my last email .... correct paragraph below, 60cm = 24" "I suggested you get the 60cm (24") version, I should have said why. Most...
... Trust me, they won't be ... or if they are please let me know. First surface mirrors have a delicate surface and there is no reason for them to be first...
Paul, Nice photos. Any idea on how she got the measurements for the dome? Paul Floyd. ... From: Paul Bourke To: small_planetarium@yahoogroups.com Sent: Friday,...
With the starlab cylinder projector you really can't add any light to the dome as base lighting without wiping out the projection all together - they are not...
Hi all, I have taken a break from the small planetarium scene for a while while doing some extended traveling. That, however did not stop me from visiting the...
That's pretty typical of the old-school planetarium presentation. It's a demo of the star projector itself -- the diurnal motion, polar motion, annual motion,...
... seats ... Still I have to put in a good word for the optical machines, because in my own experience most of those kids won't go on to even look at the sky...
Hi Greg I've been looking at the 10 foot umbrella dome from Goto in Japan. It looks like a good candidate for a travelling planetarium program. It's small...
I like the idea of the Goto umbrella dome, but I suspect that the wrinkles and pipes would be very obvious with a digital projector, especially since the...
Paul, could you please repost, or re-email the Thailand planetarium links. I did not realize that you sent them to my email address alone, and not to the...
Very true Paul. The presentation was boring, but the sky was awe-inspiring. With a bit of work on the presentation, including the appropriate digital...
I've recently been expeirmenting with a commodity digital video camera and fisheye lens, testing the particular combination as a way of capturing fulldome...
Thanks Greg - you know, I just keep reading 'kids arent going into science' etc - in fact, Discovery just ran an article that its not 'cool' to say science...
What would be the difference in the warp mesh for a true 1/4 sphere mirror and a flatter/shallow mirror like the one's used with "MirrorDome" Does the...
I have seen the cosmodome. They use an ordinary spherically shaped mirror. The distortion grid is the same. ... When I saw the cosemodome system for the first...
... shallow mirror like the one's used with "MirrorDome" ... There is no difference. In all cases the mirrors are spherical, it is just that some people have...
... I must contradict: a truncated 1/4 sphere (x*x+y*y+z*z=r*r, y>=0, z>=r/sqrt(2)) placed at the edge of the dome is sufficient for full dome coverage. While...
... get the ... Quite right, sorry it was a typo, I meant to say "...dome coverage required one does _not_ need a full 1/4 sphere...". It must have been late...
