Conditions were not perfect (somewhat hazy), but the rocket booster was well visible and I captured it on two images (see below). It showed a clear very slow amplitude brightness variation (amplitude >20 seconds), going between mag. +3 and near-invisibility for the naked eye (> +4). Around the brightness peak it gives a short bright glint. Both my photographs captured such a glint.
(update) Based on the two pictures, and assuming I didn't miss a glint in between them, the glint period is 33.25 seconds, with glints at:
7 Mar 2009 04:26:12.60 UTC
7 Mar 2009 04:26:45.85 UTC
Below the two pictures (as usual, Canon EOS 450D @ 800 ISO + EF 50/2.5 Macro @ F2.8), and the brightness profiles for these trails.
(click images to enlarge)
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiWzkK7z2lGXi5RhVr-y8TNbwt3M_IIJD1TPC76vAFjKSKuw08kiaQm81YqhVfduKsV-5x_viv1b4WZQNORO410iaTW2II58o4uoUtu1S6M1hdU4yIpJWJdPs8B7XT-3nBZ81dBQg/s400/07032009_Safir2_1.jpg)
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgebcCWKFh6ZC-NMhceQw1K1u9tt_Fa9DXvn8GjluNkO7LnjyoIgi5PMvw5VagW8nlvzPv0lrgZxQQKeb-qXmDeNBINA6iTbULfKDa7iKwe8ugUTCpBb-uI1e6HwosxjyoQfEfAVQ/s400/Safir2_070409_Prof1.jpg)
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjvaQs18nG5QN_hRnBK8YEx1LGoondHmtEeoYcOmlNnIoxUa9jHLWKjACJN4zCj5Ibp2GSqSSoIInjjHDo67jRxzbwiFzotgpbRWlzQ4t4ZsI6lzlRBDG1YVXul4LSnwYzXCeIfKw/s400/07032009_Safir2_2.jpg)
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgCubrSV5YLW429N472e4ftYcjzWNIN7GrCyWrpX-DC9xBvpgxI7Mu5n_ms9p0X79zToeUWgEvdqsrUhZzOpSznSlamUvOL1nG04IDcQNa5LsGoCVx8exl2_ed4UrGrIgMnOWr4fA/s400/Safir2_070409_Prof2.jpg)
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