AO-40の分離直前、切り離されたコニカルアダプタが離れていく
コニカルアダプタの切り離し後、第2段は姿勢を変更して
スピンを開始し、AO-40の分離に備える


時間を1/10に

            ----------------------------------------------
             Please keep this text intact with the images
            ----------------------------------------------



                            Amsat P3D/Oscar-40

                              Camera Images

                          by James Miller G3RUH

                               2000 Nov 22


This ZIP contains 6 images taken by the Amsat Oscar-40 spacecraft during
payload separation phases of the launch, 2000 Nov 16 [Thu] utc.

The event shown is the detachment of the 2624x1663mm conical adaptor
assembly that had been support for satellite PAS-1R.

The JPEG images are 512x512 pixels, format 256 greyscale, and the camera
field of view is  20.74 deg square.

The image filenames HHMMSS.JPG are based on the P3D spacecraft time when
the image was taken.   According to the camera log, P3D separation was at
0147:27.68 spacecraft time.  ArianeSpace announced P3D separation to have
taken place at 0149:47 utc.  Based on that information, UTC time tags have
been recreated as shown in the table.

                  Image
   File          taken at
  ------------------------
  014628.JPG    0148:47 utc
  014633.JPG    0148:52 utc
  014638.JPG    0148:57 utc
  014643.JPG    0149:02 utc
  014648.JPG    0149:07 utc
  014653.JPG    0149:12 utc
  ------------------------

Images prior to these are the same as the first, apart from changes in
lighting.  Similarly later images are the same as the last one.

The camera is close to the rim of the spacecraft, looking along the main
axis of symmetry.  The top of an image is "outermost".

                              ==========

Acknowledgements and Information
--------------------------------
P3D/Amsat-Oscar-40 was launched by ArianeSpace on flight V135, an Ariane 5
rocket, together with spacecraft PAS-1R, STRV-1C and STRV-1D on 2000 Nov 16
[Thu] 0107 utc from the European Spaceport, Kourou, French Guyana.
 http://www.arianespace.com

AMSAT is a worldwide non-profit making organisation that supports the
design, construction, funding, management and use of amateur spacecraft.
 http://www.amsat.org

Among many outstanding facilities, the Amsat-Oscar-40 spacecraft carries an
experimental non-executive flight computer based on the Intel/DEC SA-1100
microprocessor running at 133 MHz.  This computer manages the camera.
 http://www.amsat.org/amsat/articles/g3ruh/124.html

The camera is a Fuga 15d CMOS, pixel addressable imager from C-CAM
Technologies of Heverlee, Belgium.
 http://www.vector-international.be

Very fast JPEG compression code for the SA-1100 processor was supplied
under a generous licence by ARM Ltd of Cambridge, England.
 http://www.arm.com

Some of the images were corrupted in memory by radiation.  Special thanks
to J. David Barrow, RiscOS programmer and JPEG innards expert, for locating
and flipping the single bit errors in those images, thus rendering them
useful.
 http://www.dacha.freeuk.com/


jrm
2000 Nov 23 [Thu] 0011 utc
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