back drift scan image at declination 84.8
Compare with a "stare mode" (standard) image strip84 (99KB)(strips)shut of telescope drive
Compare with a drift scan image at 84.8 degree declination, here is the orientation of the camera not correct (about 1 degree). dec848o (35KB)
Informations to the image:
seconds per line 1.815695, focal length = 750 mm , effective exposure time is sec 926.0 ,
temperature of the CCD -17.799621 degree C
Date begin=11/27/99 , Time begin=05:19:21 , Date end=11/27/99, Time end=05:49:36 , Camera=ST-7
CCD width x 765 pixel, CCD height y 510 pixel, pixelheight 0.009 mm, image height 998, image width 765, the image was rotated so the width is now 998, the height is now 765.
The arcs at the top and on the bottom are coused by drifferential trailing
The arcs at the top (north) (higher abs(Dec)) are longer then the arcs at the bottom (south) (lower abs(Dec))
Orientation: (The image was rotated 90 deg clockwise)
The begin is in the west.