the Observatory is Painted


We painted the observatory.
We sanded off the oxidation and then painted on about 5 coats of an elastomeric, high titanium oxide roof paint.  We just got the dome back on Wednesday and the only thing left is to put the dome to building gasket back on–but we’re going to give the paint one more day to cure first.
We also made a new door gasket to try to stop the rain from getting in.  We used pipe insulation.  It fits well, but I’m not sure if it is going to be tough enough.  If it falls apart quickly, we’ll find something else.  If it lasts a 6 months, then we’ll just replace it as necessary ($2 each time …).
Right now, it is sunny and 85 degrees outside, 84 in the observatory. Before we painted it, it would have been over 100 by now!  SUCCESS

a week of solstice


solstice means standing still

and this week long ( June 18-23) solargraph aimed west pretty much shows that the Sun doesn’t move a whole lot during solstice week.

This solargraph was made with a sheet of photo paper in a wide field (panorama) Holga.

Winter to Summer Solstice


For six months at a time, a small pinhole camera set out at our astronomy club’s observing site recorded the path of the sun.  You can see by the arcs on the image that we have a lot of sunny days around here.  Gaps in the solargraph indicate when the Sun was obscured by clouds.  This solargraph is a Winter to Summer Solstice record.

Solstice is soon


pinhole solargraph test I made with a homemade pinhole camera.

I will be deploying several cameras soon, and just made and sent 15 cameras to Flagstaff, Arizona to Lowell Observatory for the summer space camp being held there.

Solargraphs= fun!