JHK
In astronomy, a photometric system is a set of well-defined passbands (or optical filters), with a known sensitivity to incident radiation. The sensitivity usually depends on the optical system, detectors and filters used. For each photometric system a set of primary standard stars is provided.
A commonly adopted standardized photometric system is the Johnson-Morgan or UBV photometric system (1953). At present, there are more than 200 photometric systems.
Photometric systems are usually characterized according to the widths of their passbands:
broadband (passbands wider than 30 nm, of which the most widely used is Johnson-Morgan UBV system)
intermediate band (passbands between 10 and 30 nm wide)
narrow band (passbands less than 10 nm wide)
1209
- 2022-12-09T00:00:00.000000Z
Dealer
- 2023-02-23T00:00:00.000000Z
Na rovinu
- 2022-11-07T00:00:00.000000Z
Závislost
- 2022-10-10T00:00:00.000000Z
1209 EP
- 2022-09-12T00:00:00.000000Z
Feťácký doupě
- 2021-12-12T00:00:00.000000Z
Similar Artists