I thought I'd double check my polar alignment tonight using the built-in polar scope. But I wanted greater accuracy. So, first, I needed to verify my offset from the meridian of the time zone. Fired up my old Excel spreadsheet for calculating the Local Hour Angle. I hadn't touched it for some time. Added a line for my nice place (a smidgen further west now from High Park). I also noticed I did not have an entry for Mom. Jumped into Google Maps to quickly grab the longitudes.
Thursday, October 06, 2011
double checked offset
I thought I'd double check my polar alignment tonight using the built-in polar scope. But I wanted greater accuracy. So, first, I needed to verify my offset from the meridian of the time zone. Fired up my old Excel spreadsheet for calculating the Local Hour Angle. I hadn't touched it for some time. Added a line for my nice place (a smidgen further west now from High Park). I also noticed I did not have an entry for Mom. Jumped into Google Maps to quickly grab the longitudes.
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