Date: | shown in the german convention: day.month.year, corresponding to exposure start in UT |
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Time: | given in UT (Universal Time) at start of first exposure.
UT corresponds to Greenwich Mean Time (longitude 0). Central European Time CET = UT + 1:00 (UT = UTC +- 1s) |
Exposure: | Length of total integration time. It is given for each used filter, but each total integration time may consist of many exposures added together. |
Field of View: | The shown field of view in the image in degrees (o) or arc minutes ('). 1o = 60'. X axis versus Y axis. This field is in most cases smaller than the total exposed field on the detector. |
Receiver or Emulsion: | The used CCD camera system with number of pixels or the conventional film material. |
Filter: | Most CCD images are taken through a Johnson-Cousins BVRI filter set (see WWFPP filter page) |
Instrument, Optics: | The telescope aperture and eventually the focal length. For small photo optics the focal length f and the used focal ratio d/f is given as usual. |
Observatory, Place: | evident |
Observer: | evident |