Hi Everyone, Thanks to Rob Matson's recent prediction of flash visibility, I was able observed the flash maxima of the bright geoflasher Superbird A (89-41A/20040) early this morning. Observing with my 6" telescope the primary flashes were initally visible at mag+10 & gradually brightened. Secondary flashes became visible approx. 1 minute later. Both primary & secondary flashes gradually brightened up to at least mag+3, before fading. The flashes were visible in the scope for over 10 minutes, with the flashes brighter than magnitude +3 for perhaps two minutes or so. I briefly glimpsed the flashes naked eye, despite serious light pollution, which appeared as very short sharp flashes. Here are my timings (13th February 2000); First flash visible (mag+10) = 02:51:54.2UT Last flash visible =03:02:03.2UT Mid point flash = 02:57:04.9UT. = flash closest to mid point between the first & last visible flashes. Subjectively this was also closest to the brightest flashes seen, although very bright flashes were visible at least two minutes before & after this time. The flash period was 11.49s counted over 1ry & 2ry maxima 89- 41 A 00-02-13 JPH 632.3 0.2 55 11.496 F'f' mag+2/+10->inv Best wishes & clear skies, Jason Jason P Hatton 06200 Nice France 43.692N, 7.246E,30M (43d41'29"N,7d14'47"E,30m) http://www.geocities.com/CapeCanaveral/Hangar/1668/high-alt.htm ----------------------------------------------------------------- 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 : Sun Feb 13 2000 - 17:41:48 PST