>> for flash timings or attempts at position measurements, >> I use a good stopwatch calibrated with WWV. > > How many lap times can this particular stopwatch hold? Just three or four weeks ago I bought another of the same model of stopwatch. (The first one, after something more than two years and thousands of clicks, has developed a sticking-buttons problem. It's still under a warranty, so I should do something about that.) It's an "Alpha 470 Version 2.0" made in Hong Kong and sold by SportLine of Campbell, California. It stores 100 laps. The first one was a gift from my sister; the second one I picked up at Academy for less than $30, I think (don't have the exact price handy). Sue Worden has one of these also: http://www2.satellite.eu.org/seesat/Jan-2000/0418.html Kurt Jonckheere wrote about a 100-lap stopwatch in 1996: http://www2.satellite.eu.org/seesat/Jun-1996/0137.html Mike McCants wrote about his 50-lap stopwatch in 1997: http://www2.satellite.eu.org/seesat/Jan-1997/0238.html Back in January 2000 David Brierly asked about a 500-lap stopwatch that he had seen advertised that included an optional connection to a PC (DOS) system, but I don't know if anyone ever replied to his inquiry: http://www2.satellite.eu.org/seesat/Jan-2000/0411.html A couple of months later Mike Waterman wrote a message, "Better than a stopwatch?" about his system for using a direct PC hook-up: http://www2.satellite.eu.org/seesat/Mar-2000/0124.html And another one for those who like to "build their own", Willie Koorts has some interesting information, "Turn your PC into a 1000-lap-memory logged stopwatch for doing satellite timings ..", at this location: http://canopus.saao.ac.za/~wpk/pip.txt There's a lot of information about how to use stopwatches (both old-fashioned and multiple-memory) for timing satellites in chapter 7 of the FAQ: http://www.fc.net/~worden/FAQ/Chapter-07 ... Hoping for some clear weather this coming weekend .... Ed Cannon - ecannon@mail.utexas.edu - Austin, Texas, USA ----------------------------------------------------------------- Unsubscribe from SeeSat-L by sending a message with 'unsubscribe' in the SUBJECT to SeeSat-L-request@lists.satellite.eu.org http://www2.satellite.eu.org/seesat/seesatindex.html
This archive was generated by hypermail 2b29 : Wed Feb 14 2001 - 23:39:26 PST