... so long as your astronomic observations take into account the Laplace correction due to your local deflection of the vertical, which may typically...

@jay1980 Anyone wishing to comment should note that the post comes from the UK.

@brad-ott That's what I was wondering, too.

The tone was probably relayed by the station from WWV radio operated by the National Bureau of Standards near Ft Collins, rather than NORAD. ?ÿ

There's that, too, but I think they were probably referring to the method studied in the Jerry Wahl paper linked above.

To get an azimuth from a sun shot, you can use a source of very accurate time and some calculations from tables OR you can use knowledge of the sun's...

A submission for Wendell's calendar photo contest?

The first rule should be to label what the measurements are - sufficient metadata. I tend to think recorded surveys should be on a plane that is a cl...

Don't you think it is just a prohibition against slope distances? The wording is weird, but that prohibition goes back to the original GLO instructio...