----- Original Message ----- From: "Matson, Robert" < Subject: RE: Some errors in Heavens Above's prediction on Iridium Flares >....most beginning observers overestimate all elevation angles -- with increasing errors as the angle increases. +++++++++ I recently purchased a "pitch and angle locator" at a local hardware store (Menards) for about $5. I have yet to adapt it to line-of-sight viewing but it does gives me an accurate idea about what the various elevation angles look like with respect to the horizon. For spotting the iridium flares I also find it useful to get to the place in H-A where the track of the satellite is plotted on a star chart. From there I mark where the flare is going to be then use the stars as a guide. I find that this is more reliable than simply estimating where to look. Tom Iowa USA ----------------------------------------------------------------- Unsubscribe from SeeSat-L by sending a message with 'unsubscribe' in the SUBJECT to SeeSat-L-request@lists.satellite.eu.org http://www.satellite.eu.org/seesat/seesatindex.html
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