re: Analemma intersection

2018-04-15 Thread Robert Kellogg
Dan, Steve Regarding the exact time of intersection: It requires a rather interesting problem of simultaneously minimizing EOT and declination between spring and fall dates.  Fortunately I have a spread sheet that implements the calculation of EOT to within a second or so and likewise

Re: Analemma intersection

2018-04-13 Thread Ale de la Puente
eln.de] *On Behalf Of *Roger > Bailey > *Sent:* Thursday, April 12, 2018 6:13 PM > *To:* Dan-George Uza; Sundial List > *Subject:* Re: Analemma intersection > > > > Hi Dan, > > To me the value of the EQT at the intersection is an indication of the > asymmet

RE: Analemma intersection

2018-04-12 Thread Roger W. Sinnott
Dan-George Uza; Sundial List Subject: Re: Analemma intersection Hi Dan, To me the value of the EQT at the intersection is an indication of the asymmetry of the analemma caused by the difference between the solstice and perihelion dates. The tilt of the earths axis is one parameter that def

Re: Analemma intersection

2018-04-12 Thread Roger Bailey
Hi Dan, To me the value of the EQT at the intersection is an indication of the asymmetry of the analemma caused by the difference between the solstice and perihelion dates. The tilt of the earths axis is one parameter that defines the analemma. This is shown at the extremes, the summer and