t_resolution discussion

[Bonnarel]

Section 2.1 (from September 28th version) reads :

The ObsCore definition of t_resolution as the minimal interpretable interval between two points along the
time axis (being it an average or representative value) is generally not applicable for SD data. Typically time is not an independent variable in SD measurements, it can be saved together with spatial/spectral/intensity information as a timestamp associated to each data sample. Even in the case of on-source tracking, time information in SD data is not intended for time domain studies.

To be further discussed. For such data each sample has some duration. Isn't this duration the minimal interpretable interval ?

[Bonnarel]

Section 2.1 (from September 28th version) reads :
Alessandra and Vincenzo answered :

The ObsCore definition of t_resolution as the minimal interpretable interval between two points along the
time axis (being it an average or representative value) is generally not applicable for SD data. Typically time is not an independent variable in SD measurements, it can be saved together with spatial/spectral/intensity information as a timestamp associated to each data sample. Even in the case of on-source tracking, time information in SD data is not intended for time domain studies.

To be further discussed. For such data each sample has some duration. Isn't this duration the minimal interpretable interval ?

The duration is referred to the integration time used to sample data. The spatial position is typically different among integration intervals, since the telescope is typically moving during the observation (sky scanning). Even in the case in which the telescope is observing a fixed sky position, the integration interval is not related to some kind of quantity that must be time-resolved. In most cases, you may change the value of the integration time interval without affecting the scientific result. The scientific content in a single time interval is not meaningful by itself, usually. Maybe we can discuss this further.

[alle-ira]

We have just submitted a pull request with some changes in Sect 2.1, to clarify the meaning of t_resolution

[Bonnarel]

The PR #46 has been validated but we need some further discussion