SDSS_ancillary2xwidth=560,height=260,toolbar=no,scrollbars=yes,resizable=yes 0x1HIZQSO82 \sep High-redshift quasar candidate selected from color cuts in SDSS ugriz and UKIDSS YJHK photometry 0x2HIZQSOIR \sep High-redshift quasar candidate selected from color cuts in SDSS ugriz and UKIDSS YJHK photometry in the Stripe 82 footprint 0x4KQSO_BOSS \sep Quasar candidate selected from UKIDSS K-band photometry 0x8QSO_VAR \sep Candidate quasar in Stripe 82 survey area, selected from variability alone 0x10QSO_VAR_FPG \sep Candidate quasar in Stripe 82 survey area, selected from variability alone 0x20RADIO_2LOBE_QSO \sep SDSS point source object near the midpoint of double-lobed objects identified in FIRST Catalogs 0x40STRIPE82BCG \sep The brightest cluster member of a galaxy cluster or group identified in the Stripe 82 survey area 0x80QSO_SUPPZ \sep A subset of SDSS-I/-II quasars with 1.8 < z < 2.15 that were reobserved with the BOSS spectrograph to measure metal absorption free of any effects from the Lyman-α forest (no longer used in DR12) 0x100QSO_VAR_SDSS \sep Quasars selected by photometric variability in the overlap regions between stripes of SDSS-I/-II imaging, accounting for roughly 30% of the total BOSS footprint (no longer used in DR12) 0x200QSO_WISE_SUPP \sep Quasar targets selected on their mid-infrared colors from the WISE satellite, thought to be z>2.2 quasars, as a supplement to the primary BOSS quasar sample (no longer used in DR12) 0x400QSO_WISE_FULL_SKY \sep Quasar selected from the WISE All-Sky Survey 0x800XMMSDSS \sep Hard x-ray-selected AGN from XMM 0x1000IAMASERS \sep Known or potential maser 0x2000DISKEMITTER_REPEAT \sep Candidate massive binary black hole pair 0x4000WISE_BOSS_QSO \sep Quasar identified in the WISE All-Sky Survey 0x8000QSO_XD_KDE_PAIR \sep Candidate closely-separated quasar pair 0x10000CLUSTER_MEMBER \sep Member of a galaxy cluster selected from ROSAT All-Sky Survey data 0x20000SPOKE2 \sep Candidate binary pair in which one star is an M dwarf 0x40000FAINT_ELG \sep Blue star-forming galaxy selected from CFHT-LS photometry 0x80000PTF_GAL \sep A nearby galaxy identified in PTF imaging with an SDSS counterpart 0x100000QSO_STD \sep A standard star targeted to improve BOSS spectrophotometric calibration 0x200000HIZ_LRG \sep A candidate z > 0.6 LRG, selected using a narrower r-i color constraint and observed at higher priority 0x400000LRG_ROUND3 \sep A candidate z > 0.6 LRG, selected using a broader r-i color constraint and observed at lower priority 0x800000WISE_COMPLETE \sep Galaxy in the same redshift range as the BOSS CMASS sample, but selected with a more relaxed color cut 0x1000000TDSS_PILOT \sep Objects identified from PanSTARRS imaging using the selection criteria described on the BOSS ancillary target page 0x2000000SPIDERS_PILOT \sep Objects identified from PanSTARRS imaging using the selection criteria described on the BOSS ancillary target page 0x4000000TDSS_SPIDERS_PILOT \sep Objects identified using both sets of selection criteria for TDSS_PILOT and SPIDERS_PILOT 0x8000000QSO_VAR_LF \sep Candidate quasar in stripe 82, selected by color and variability 0x10000000TDSS_PILOT_PM \sep Objects identified using X-ray imaging that has high proper motions 0x20000000TDSS_PILOT_SNHOST \sep Objects identified in PanSTARRS imaging that showed transient behavior in extended objects 0x40000000FAINT_HIZ_LRG \sep Candidate galaxy in the redshift range 0.6 < z < 0.9, defined by color cuts 0x80000000QSO_EBOSS_W3_ADM \sep Candidate quasar, defined by one of the complex color cuts described below and recorded in the W3bitmask parameter of the original targeting file 0x100000000XMM_PRIME \sep Candidate AGN identified from the XMM-XXL survey observed at higher priority 0x200000000XMM_SECOND \sep Candidate AGN identified from the XMM-XXL survey observed at lower priority 0x400000000SEQUELS_ELG \sep Emission-line galaxy targeted by the SEQUELS program 0x800000000GES \sep Star observed by the Gaia/ESO Survey (GES) 0x1000000000SEGUE1 \sep Star observed by the prior SDSS spectroscopic SEGUE-1 survey 0x2000000000SEGUE2 \sep Star observed by SEGUE-2 0x4000000000SDSSFILLER \sep Star in the GES survey area, targeted from prior SDSS photometry 0x8000000000SEQUELS_ELG_LOWP \sep Emission-line galaxy targeted by the SEQUELS program at lower priority 0x1000000000025_ORI_WISE \sep WISE-selected target near the star 25 Ori 0x2000000000025_ORI_WISE_W3 \sep WISE-selected target near the star 25 Ori, selected from data in the W3 band 0x40000000000KOEKAP_STAR \sep WISE-selected source in the star-forming region Kappa Ori, selected from WISE infrared excess 0x80000000000KOE2023_STAR \sep WISE-selected source in the star-forming region NGC 2023, selected from WISE infrared excess 0x100000000000KOE2068_STAR \sep WISE-selected source in the star-forming region NGC 2068, selected from WISE infrared excess 0x200000000000KOE2023BSTAR \sep Other WISE-selected source in the star-forming region NGC 2023 0x400000000000KOE2068BSTAR \sep Other WISE-selected source in the star-forming region NGC 2068 0x800000000000KOEKAPAPBSTAR \sep Other WISE-selected source in the star-forming region Kappa Ori 0x1000000000000COROTGESAPOG \sep Star observed by both the CoRoT survey and by APOGEE 0x2000000000000COROTGES \sep Star observed by both CoRoT and GES 0x4000000000000APOGEE \sep Star in the CoRoT survey area, not observed by CoRoT but with an APOGEE spectrum 0x80000000000002MASSFILL \sep Star in the CoRoT survey area targeted from 2MASS photometry 0x10000000000000TAU_STAR \sep Spitzer-selected source in the Taurus Heiles 2 molecular cloud 0x20000000000000SEQUELS_TARGET \sep A target from the SEQUELS program (no longer used, replaced by EBOSS_TARGET0 flag) 0x40000000000000RM_TILE1 \sep AGN selected for reverberation mapping study at high priority 0x80000000000000RM_TILE2 \sep AGN selected for reverberation mapping study at lower priority 0x100000000000000QSO_DEEP \sep Candidate quasar selected by time variability 0x200000000000000LBG \sep Candidate Lyman-break galaxy selected by color 0x400000000000000ELAIS_N1_LOFAR \sep LOFAR source selected with RMS noise criteria 0x800000000000000ELAIS_N1_FIRST \sep Source detected in the FIRST radio catalog 0x1000000000000000ELAIS_N1_GMRT_GARN \sep Source identified from deeper GMRT radio data 0x2000000000000000ELAIS_N1_GMRT_TAYLOR \sep Fainter source identified from deeper GMRT radio data 0x4000000000000000ELAIS_N1_JVLA \sep Very faint source detected in JVLA radio data 0x8000000000000000