"designer" to help make exotic reflectors for unattended solar cooking.
Before you discount it as rubbish, please look about 5 minutes into this video And pause it at about 5min 50 to see the "tuba like horns"
http://www.youtube.com/watch?v=TSMzKg6fwJ8 HIs design was done by computer and in my view is way too complicated but I hope it opens peoples eyes to some of the failings of parabolic dishes for unattended solar cooking.
There ARE other options and they do not look anything like what we imagine.
I believe that people can design exotic fairly high efficiency solar cookers (with a range of cooking times) using the method I show.
If anyone wants to help make the instructable more understandable, I can open it and make a collaboration.
Or I can credit people for their input. Also, it is community commons so it is no longer my idea,
release and improve it anywhere you want.
I will be improving the instructable myself over the coming weeks but do not expect instant improvement.
The instructable is at https://www.instructables.com/id/Method-for-designing-reflectors-for-unattended-sol/
and I have attach a pic here to get people started (I will improve that picture too).