Added iris.sg.SpectrographObservation.timedelta field which stores the exposure time for each frame of the observation.
#118
| Job | Run time |
|---|---|
| 1m 15s | |
| 53s | |
| 2m 7s | |
| 1m 46s | |
| 49s | |
| 55s | |
| 7m 45s |