Table 1
List of the different calibration strategies(†) used in DR4.
| Calibration strategy | # of fields | Reference | ISM Extinction map |
|---|---|---|---|
| MainA (a) | 151 | SDSS (Ivezic) [1] | Schlegel+98 [2] |
| MainB (a) | 19 | SDSS (DR12) [3] | Schlegel+98 [2] |
| MainC (a) | 1050 | ATLAS-REFCAT2 [4] + GALEX DR6/7 [5] | Schlegel+98 [2] |
| MainD (a) | 82 | ATLAS-REFCAT2 [4] | Schlegel+98 [2] |
| MainE (a) | 4 | Skymapper (DR1.1) [6] | Schlegel+98 [2] |
| MCA (b) | 111 | ATLAS-REFCAT2 [4] + GALEX DR6/7 [5] (DR1.1) [6] | Schlegel+98 [2] |
| MCB (b) | 20 | ATLAS -REFCAT2 [4] (DR1.1) [6] | Gorski+20 [7] |
| MCC (b) | 16 | Skymapper (DR1.1) [6] | Schlegel+98 [2] |
| MCD (b) | 3 | Skymapper (DR1.1) [6] | Gorski+20 [7] |
| DiskA(b) | 174 | ATLAS-REFCAT2 [4] | Gaia (DR2) [8] |
Notes. (†) References: [1] Ivezić et al. (2007), [2] Schlegel et al. (1998), [3] Alam et al. (2015), [4] Tonry et al. (2018), [5] Bianchi et al. (2017), [6] Wolf et al. (2018), [7] Górski et al. (2020), [8] Gaia Collaboration (2018).(a) Aperture (dual mode).(b) PSF.
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