a pair of plastic coated garden poles (from a real gardening store in onesey twoseys, online for bulk, but not home depot et al afaik, I've checked and they don't carry them)
like the dark green ones shown here (below the ads section in the images area of the query page) https://www.bing.com...poles&FORM=IGRE
They're about 3/4" in diameter and can be purchased in heights from ~4ft tall to 8ft tall. Cost is insignificant ~$5-10 each.
(last time I purchase some 7 footers they were $5 each. basically just conduit with a plastic coating, a flat section for hitting with a mallet, and a conical tip for driving into a soft substrate. Plenty durable for the purpose.
A small section of standard ~opaque, ripstop plastic tarp (brown would be a good unobtrusive color) . A 6'x8' costs all of ~$10 and you'd only need a ~2ft x 2ft section if you put the banner "upwind" of the scope between it and the light source... (nearer requires larger sections...)
2ea 5 gallon pails (home depot, etc)
a couple bags of play sand or something else the poles can be sunk into when assembled.
a grommet kit (for modifying the section of tarp) ~$350 at walmart
some stout rope/twine etc for attaching the "banner" to the top of the poles or bungy cords (wallmart has bags of them in the camping section for<$5)
pails with sand stay intact and carry from/back to garage.
poles with banner stay intact as set.
Assembly is easy. Just set pails at spread distance, unfurl banner (already on poles) and then stick poles into each.
First time out, adjust height of banner for optimal shielding. Mark poles so you can easily set again if necessary.
Dis-assembly is just as easy.
or however you figure the solution. point is, targeted shield works. Even if not ideal or permanent.
Edited by xiando, 06 July 2018 - 03:06 PM.