Canopus56 wrote:
If I'm reading your post correctly, I just wanted to say that's absolutely brillant and is an original tool for making photographs of ISS transits of the Sun and Moon.
Thanks but (blush) your praise is misdirected (my head size is too big as it is). The spreadsheet I mentioned only interpolates between points. It does not generate the points. I get those via a service I've subscribed to on the web. I supply them with my long/lat/ele and they send me a report once or twice a week with upcoming ISS transits of the Moon, Sun and the brighter planets visible from with 40 km of my house. There are a surprising (to me at least) number of ISS transits. Several per month, in fact. But most of them occur when the transit is low in the sky which makes ISS so far away that it's hard to see even in a telescope. Patrick