On 17 August, 2002, Roi Alonso Sobrino
, a STARE collaborator and our site operator in
Tenerife, took advantage of some telescope down-time (the dec motor
was not working) to record part of the passage of asteroid
2002NY40 near the Earth. The RA motor still
worked, so the telescope was able to track the sky reasonably. Roi
chose an exposure time of 7 sec. with the V (visual) filter in place. The
trail of the asteroid appears dashed because of the relatively long CCD readout
time of 13 sec, during which the shutter remains closed.
We will post more pertinent info about these observations, such as field
coordinates and UTC times, when it becomes available.
The following is a composite image, 4 degrees long, of approximately one hour
of the asteroid's motion. The separate frames were used to create the MPEG
movie, astny40_mov1.mpeg, accessible below.
Roi also made MPEG movies showing the asteroid moving through the STARE
field-of-view from upper-left to lower-right. Click on the thumbnail
image to display a full-sized representation of the first frame of the
respective MPEG (and a link to that MPEG). On it is superposed an arrow
pointing to the asteroid's starting position and a line showing its motion
through the movie. With this aid, it is easier to spot the faint asteroid in
the somewhat-flickering movie. Again, the times and coordinates of these
movies will be added when the information becomes available.