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- Bitmask Primer
- Bitmasks in CAS
- Bitmasks in SEGUE
- Bitmasks in IDL
- PHOTO FLAGS1
- PHOTO FLAGS2
- RESOLVE_STATUS
- CALIB_STATUS
- IMAGE_STATUS
- LEGACY_TARGET1
- LEGACY_TARGET2
- SEGUE1_TARGET1
- SEGUE1_TARGET2
- SEGUE2_TARGET1
- SEGUE2_TARGET2
- SPECIAL_TARGET1
- BOSS_TARGET1
- ANCILLARY_TARGET1
- ANCILLARY_TARGET2
- BOSSTILE_STATUS
- FLUXMATCH_STATUS
- SPECTRUM PIXMASK
- ZWARNING
- APOGEE_TARGET1
- APOGEE_TARGET2
SEGUE2_TARGET1: SEGUE-2 primary target bits
| Bit name | Binary digit | Description |
|---|---|---|
| SEGUE2_MSTO | 0 | Main-sequence turnoff |
| SEGUE2_REDKG | 1 | Red K-giant stars |
| SEGUE2_LKG | 2 | K-giant star identified by l-color |
| SEGUE2_PMKG | 3 | K-giant star identified by proper motions |
| SEGUE2_LM | 4 | Low metallicity |
| SEGUE2_HVS | 5 | hyper velocity candidate |
| SEGUE2_XDM | 6 | extreme sdM star |
| SEGUE2_MII | 7 | M giant |
| SEGUE2_HHV | 8 | High-velocity halo star candidate |
| SEGUE2_BHB | 13 | Blue horizontal branch star |
| SEGUE2_CWD | 17 | Cool white dwarf |
| SEGUE2_CHECKED | 31 | was a checked object |
More detailed information about the selection criteria for SEGUE-2 is available on the SEGUE Target Selection page.