what exposure unit are you using?

[alan802]

we have an old tracking device from a surplus radio telescope that we  mounted on my neighbors house. It has a computer program that tracks the sun here in NY and shoots it at the reflector unit from an old solar cooking oven I bought off ebay.

We concentrate the beam using a 340 pound hand blown lens from an old lighthouse, the focal distance is about 20 miles so I have to bring my screens over to the next county.
For vaccuum unit I have my neighbor come with me when I take the screens on the road trip, he is an extreme left wing loon that seems to create the perfect vaccuum where ever he goes.
 It works pretty good except we only have 37 days of sunlight here in beautiful New York so sometimes the exposure time is weeks depending on weather pattern.

When I upgrade I am going to use Sam, he is always telling folks how to suck it up, he is totally focused and he is really really bright, and i hear he is also pretty fast or at least half-fast. A I & O

 

Ok, greatest exposure unit of them all, puts the Richmond to shame.

[ZooCity]

Beautifully stated Gilligan. I've seen some folks have their light on a track, if they expose one frame, they can get closer for a faster exposure, if they want to expose more than one frame, they have to be further back, so they move it to a pre-determined spot and shoot away. You can double your distance and shoot 4 screens at once, depending on the size of your vacuum frame of course...

Yeah!  Thank you Professors Gilligan and Sbrem.  Only caveat is the reflector is presumably designed for best resolution (light angle is most actnic across the image area) at the stated distance but I had fine resolution shooting "too close" in my homebrewed vac frame for years so it should be a non-issue.

[inkman996]

we have an old tracking device from a surplus radio telescope that we  mounted on my neighbors house. It has a computer program that tracks the sun here in NY and shoots it at the reflector unit from an old solar cooking oven I bought off ebay.

We concentrate the beam using a 340 pound hand blown lens from an old lighthouse, the focal distance is about 20 miles so I have to bring my screens over to the next county.
For vaccuum unit I have my neighbor come with me when I take the screens on the road trip, he is an extreme left wing loon that seems to create the perfect vaccuum where ever he goes.
 It works pretty good except we only have 37 days of sunlight here in beautiful New York so sometimes the exposure time is weeks depending on weather pattern.

When I upgrade I am going to use Sam, he is always telling folks how to suck it up, he is totally focused and he is really really bright, and i hear he is also pretty fast or at least half-fast. A I & O

Damn you could contract out to all print shops in a twenty mile radius, they call up give exact time screen will be in their predetermined position you rotate your light house lens and flash expose there screen for them, you could make a killing! Franchise it!

[Sbrem]

Beautifully stated Gilligan. I've seen some folks have their light on a track, if they expose one frame, they can get closer for a faster exposure, if they want to expose more than one frame, they have to be further back, so they move it to a pre-determined spot and shoot away. You can double your distance and shoot 4 screens at once, depending on the size of your vacuum frame of course...

Yeah!  Thank you Professors Gilligan and Sbrem.  Only caveat is the reflector is presumably designed for best resolution (light angle is most actnic across the image area) at the stated distance but I had fine resolution shooting "too close" in my homebrewed vac frame for years so it should be a non-issue.

I knew I left a door open for that, sorry for the wind. It's only for discussion, geeky stuff for sure. Not all reflectors are the same, many broadcast at an angle; ours can be removed, but we don't. Our lamp stays in one place, and we have a wall mounted vacuum frame, and keep a chart for the exposure times.

[mooseman]

we have an old tracking device from a surplus radio telescope that we  mounted on my neighbors house. It has a computer program that tracks the sun here in NY and shoots it at the reflector unit from an old solar cooking oven I bought off ebay.

We concentrate the beam using a 340 pound hand blown lens from an old lighthouse, the focal distance is about 20 miles so I have to bring my screens over to the next county.
For vaccuum unit I have my neighbor come with me when I take the screens on the road trip, he is an extreme left wing loon that seems to create the perfect vaccuum where ever he goes.
 It works pretty good except we only have 37 days of sunlight here in beautiful New York so sometimes the exposure time is weeks depending on weather pattern.

When I upgrade I am going to use Sam, he is always telling folks how to suck it up, he is totally focused and he is really really bright, and i hear he is also pretty fast or at least half-fast. A I & O

Damn you could contract out to all print shops in a twenty mile radius, they call up give exact time screen will be in their predetermined position you rotate your light house lens and flash expose there screen for them, you could make a killing! Franchise it!

I am selling franchise packages at this very moment, your chance to get in on the ground level...but waite, for today and today only get two, thats two franchise packages for the price of one. Just pay seperate shipping & handling.
can i put you down for a couple?

mooseman