Hi,
nice images Matt! I like the first one the most!
Like the other writers, I built boxes for solar imaging. I don't do this anymore. Don't take this as a commercial. There's a "self unfolding" notebook tent available called "iCap". It became very popular amongst astro imagers in germany lately, not bounded to solar imaging, but primarily.
The folded tent resides in a disc shaped bag, about 7" or so in diameter. When opening the bag, the tent just pops out, ready to go. Folding back into the bag is a matter of seconds. Weight is next to nothing. My Thinkpad T43 keeps cool inside the tent and so should other notebooks. And last but not least, it's as easy to see the content of the screen and working is just like under normal indoor light situations.
I could take some images of the tent or videos of the unfolding process? Could not find that on the net