ajgrecojr
Newbie
Posts: 1
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« on: October 01, 2009, 01:40:43 PM » |
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Hello,
Last night in my backyard, I made my first attempt to track the ISS with my DS2090 refractor. While waiting for the Autostar to count down the minutes to the arrival of the ISS, with about a minute and a half, the ISS rose over the mountain I live by. I initiated the tracking before the time on the Autostar reached 0. As I realized I might have started the tracking too earlier, I stood back from the telescope to visually see how far off I was. Eyeballing it, it seemed the path of the ISS was higher than what the Autostar was following. I made a few futile attempts to correct the path by using the eyepiece and the red dot finder. In the end, I was not able to view the ISS through the telescope.
I don’t understand why I still had time left after I was able to visually see the ISS? While Autostar was waiting for the command to start the tracking, it wasn’t pointing in the direction the ISS crested over the mountain. It seemed it was off. I’m sure I properly aligned and inputted the telemetry data into the Autostar. Here is the data I used.
1 25544U 98067A 09273.30582176 .00012731 00000-0 89680-4 0 6988
2 25544 51.6385 127.1449 0008797 145.2320 192.3385 15.74487077622502
Of course, where the numbers had to be shortened, I rounded any numbers that needed it.
Anyone have any ideas where I might have done wrong? Since you have to shorten the day (273.30582176) and the mean (15.74487077622502), does it cause the Autostar to be off from the true path of the ISS?
Thanks for the help.
Anthony.
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