SEGUE2_TARGET2: SEGUE-2 secondary target bits

Bit name Binary digit Description
LIGHT_TRAP 0 light trap hole
SEGUE2_REDDENING 1 reddening standard
SEGUE2_TEST 2 test target
SEGUE2_QA* 3 repeat target across plates
SKY 4 empty area for sky-subtraction
SEGUE2_SPECPHOTO 5 spectrophotometric star
GUIDE_STAR 6 guide star
BUNDLE_HOLE 7 bundle hole
QUALITY_HOLE 8 quality hole
HOT_STD 9 hot standard
SEGUE2_CLUSTER 10 SEGUE-2 stellar cluster target
SEGUE2_STETSON 11 Stetson standard target
SEGUE2_CHECKED 31 was a checked object

*QA duplicate observations are not currently marked in segue2_target2 bitmasks. These are only
marked in sourcetype in SpecObjAll.