| | 4 | |
| | 5 | There are two parts to the filenames |
| | 6 | * Observation |
| | 7 | * Data reduction product |
| | 8 | |
| | 9 | == Observation == |
| | 10 | |
| | 11 | Consider: `o4997g0240o.77966` |
| | 12 | * `o` = OTIS (Observatory, Telescope, Instrument, and Software). Nothing else possible? |
| | 13 | * `4997` = Julian Date - 2,450,000 |
| | 14 | * `g` = Gigapixel Camera. Let's us know this is a PS1 observation. Though what will it be for PS4? |
| | 15 | * `0240` = Observation sequence number |
| | 16 | * `o` = '''o'''bject, '''b'''ais, '''d'''ark, '''f'''lat, etc. |
| | 17 | * `77966` = Exposure ID |
| | 18 | |
