| Telescope | CTIO 4m |
| Date | 5/20/1998 |
| Instrument | BTC (1 chip) |
| Filter | R |
| Exposure Time |
480 sec |
Problem:This is another example of an airplane going through the field of view during the exposure. Note the different intensities of the "tire tracks" going through the image, due to the different colors and intensities of the lights on the bottom or perhaps wings of the aircraft. |
Fix:Take another exposure. If the problem persists, you may have to contact ATC (air traffic control) ... |
A third example of an airplane in the field of view.