Thank you for the comment, Mark and Alex. Next solar eclipse will be seen at 4th Jan, 2011. AO-51 will see the eclipse near India.
NASA Eclipse web site http://eclipse.gsfc.nasa.gov/solar.html is interesting. 73 Masa JN1GKZ >Very interesting, Alex! Thank you for sharing that video. > >73, > >Mark N8MH > >At 08:37 PM 7/14/2010 +0200, Alexandru Csete wrote: >>Greetings, >> >>I ran a simulation using the Celestia space simulator and could indeed >>observe a partial solar eclipse as seen from AO-51 :) >>I have recorded the simulation to a video and you can watch it on >>Youtube: >>http://www.youtube.com/watch?v=7ET8BhbqmVk >> >>I couldn't find any 3d model of AO-51 so I used a model of AO-7 - sorry >>for that. Also note that I used TLEs from today to generate orbital >>data for Celestia so the time and may not be scientifically accurate. >> >>If you want to run the simulation for yourself, watch from other >>angles, etc., you can get Celestia for free from >>http://shatters.net/celestia/ >>You'll need to add the data files for AO-51 in the "extras" folder; >>you can use mine to begin with. There is a .zip file here: >>http://files.oz9aec.net/video/SolarEclipse/ >> >>You'll also find the H.264 encoded video there that you are free to >>download (~100MB). >> >>73 >>Alex Oz9AEC >> >> >>On Tue, 13 Jul 2010 13:10:41 -0400 >>"Mark L. Hammond" <marklhamm...@gmail.com> wrote: >> >>> Hello Masahiro, >>> >>> Thank you for your message! You have made a great observation, and I >>> think you are exactly right about the cause of the observed "glitches" >>> in the telemetry. Usually at this point in its orbit we would observe >>> AO-51 charging its batteries at a steady rate from fully illuminated >>> panels. >>> >>> >From what I've read from page 43 here: >>> http://eclipse.gsfc.nasa.gov/SEpubs/2010/TP214171a.pdf the eclipse >>> was from 18:15 to 20:52 UTC. Look also at the areas experiencing >>> eclipse. >>> >>> Please be aware that the "clock" on AO-51 runs fast. It is now about >>> 3 minutes fast, so look at telemetry timestamped from about 18:18 >>> until 20:55 UTC. >>> >>> Since the duration of the solar eclipse was 2 hrs 39 min (or 159 mins) >>> and AO-51 orbits every 100 minutes or so, it could have been affected >>> two times. >>> >>> I've plotted some of the telemetry collected from that period >>> (telemetry from 1800-2130utc) and posted it here: >>> http://www.amsat.org/amsat/ftp/telemetry/ao51/2010WOD/July2010/Wd071100_1800to2130utc_solar_eclipse.xls >>> >>> And here's a screenshot of AO-51 at the time: >>> http://www.amsat.org/amsat/ftp/telemetry/ao51/2010WOD/July2010/ao51_11July2010_2045utc_solar_eclipse.jpg >>> >>> 73! >>> >>> Mark N8MH >>> >>> >>> >>> 2010/7/13 Masahiro Arai <m-a...@a.email.ne.jp>: >>> > >>> > Total solar eclipse was observed in southern Pacific Ocean at 11th >>> > July. I checked AO-51 WOD file. Total Array I shows glitch at >>> > 2043-2045z. AO-51 was located on east of Argentina at the time. Is >>> > this glitch made with solar eclipse?? >>> > >>> > >>> > AO-51 Wd071100 >>> > 2010/7/11 >>> > UTC ツ ツ Total Array I [mA] >>> > 20:35 ツ -2.111 >>> > 20:36 ツ -0.323 >>> > 20:37 ツ -0.323 >>> > 20:38 ツ ツ 1.465 >>> > 20:39 ツ -0.323 >>> > 20:40 ツ 528.851 >>> > 20:41 ツ 321.472 >>> > 20:42 ツ 307.170 >>> > 20:43 ツ 183.815 >>> > 20:44 ツ 190.966 >>> > 20:45 ツ 176.664 >>> > 20:46 ツ 249.962 >>> > 20:47 ツ 300.019 >>> > 20:48 ツ 396.557 >>> > 20:49 ツ 498.459 >>> > 20:50 ツ 519.912 >>> > 20:51 ツ 729.079 >>> > 20:52 ツ 634.328 >>> > 20:53 ツ 936.458 >>> > 20:54 ツ 843.495 >>> > 20:55 ツ 948.972 >>> > >>> > >>> > WOD file >>> > ftp://ftp.amsat.org/pub/amsat/telemetry/ao51/2010WOD/July2010/Wd071100 >>> > >>> > AO-51 WOD decoder >>> > http://tinyurl.com/DK3WNsoftware >>> > >>> > >>> > 73 >>> > >>> > Masa ツ JN1GKZ ツ ツ Tokyo Japan >>> > >>> > >>> > >>> > _______________________________________________ >>> > Sent via amsat...@amsat.org. Opinions expressed are those of the >>> > author. Not an AMSAT-NA member? Join now to support the amateur >>> > satellite program! Subscription settings: >>> > http://amsat.org/mailman/listinfo/amsat-bb >>> > >>> >>> >>> > > >Mark L. Hammond [N8MH] > > _______________________________________________ Sent via amsat...@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
