The easy answer is yes. The curvature of the light path is minimal over the ~15 minute width of the analemma compared to noon. I am making a lot of assumptions here on what your helio-chronometer looks like and the alignment of the analemma. Is it like the one described in Sky and Telescope back in Dec 94 as discussed here earlier?
Roger Bailey N 51 W 115 -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Behalf Of david scott Sent: April 18, 2002 2:57 PM To: [email protected]; DeAmicis-Roberts, Mike Subject: An easy question Greetings Dialist I have been slugging away at the third or forth prototype Helio-chronometer and have a problem. It tells time remarkably well but, Am I wrong in expecting the bead of light emanating from the aperture on the alidade to walk horizontally across the anelamma over the course of the day. or does it cross the appropriate date mark on the anelamma at noon? Dave Scott lat. 42:56 N long. 72:40 W Wendell,MA. - -
