A number of sources have been observed with multiple SOFIA instruments. These provide opportunities for multi-wavelength science on a variety of topics. Below is a list of 18 sources observed with at least three SOFIA instruments. The list includes the source name, the instruments used, the associated proposal IDs, and the source type. You can download the list here.

SOFIA Highly-Targeted Sources
Target Number of Instruments Instruments PID Type
M82 5 EXES, FIFI-LS, FORCAST, GREAT, HAWC+ 02_0100, 07_0150, 07_0217, 08_0012, 08_0225, 09_0149, 70_0004, 70_0408, 70_0409, 70_0509, 70_0608, 70_0609, 70_0908, 75_0001, 75_0002, 75_0003, 75_0017, 75_0055, 87_0005 galaxy
NGC 253 4 EXES, FIFI-LS, GREAT, HAWC+ 03_0039, 03_0065, 08_0012, 09_0066, 70_0509, 70_0608, 70_0708, 87_0005 galaxy
NGC 1068 4 EXES, FIFI-LS, FORCAST, HAWC+ 03_0065, 07_0209, 08_0012, 70_0400, 70_0409, 70_0509 galaxy
M51 3 FIFI-LS, GREAT, HAWC+ 04_0116, 08_0260, 09_0201, 70_0509, 76_0003 galaxy
NGC 2639 3 FIFI-LS, GREAT, HAWC+ 08_0066, 75_0041 galaxy
NGC 2273 3 FIFI-LS, FORCAST, HAWC+ 04_0048, 06_0066, 08_0069 galaxy
Orion Nebula 5 EXES, FIFI-LS, FORCAST, GREAT, HAWC+ 03_0044, 03_0126, 03_0138, 04_0058, 04_0120, 05_0043, 05_0068, 06_0061, 07_0016, 08_0209, 09_0107, 70_0002, 70_0301, 70_0400, 70_0401, 70_0408, 70_0508, 70_0509, 70_0609, 70_0908, 71_0013, 76_0002, 86_0005, 87_0002, 88_0005, 90_0086, 90_0094 nebula
NGC 7027 4 EXES, FIFI-LS, FORCAST, GREAT 05_0121, 83_0405, 84_0109, 84_0110, 84_0112, 84_0113, 90_0009, 90_0030, 98_0002 nebula
W3 IRS 5 5 EXES, FIFI-LS, FORCAST, GREAT, HAWC+ 03_0064, 04_0120, 04_0133, 04_0138, 04_0153, 05_0038, 06_0020, 07_0063, 08_0038, 08_0136, 09_0072, 09_0129, 09_0169, 09_0191, 70_0302, 70_0402, 76_0002, 76_0004, 83_0435, 86_0005, 88_0005, 90_0084, 90_0086 protostar/yso
HL Tau 4 FIFI-LS, FORCAST, GREAT, HAWC+ 03_0054, 03_0064, 04_0107, 05_0029, 05_0200, 09_0084, 09_0231 protostar/yso
AFGL 2591 4 EXES, FIFI-LS, FORCAST, GREAT 02_0064, 04_0089, 04_0120, 04_0141, 05_0041, 05_0207, 06_0058, 09_0092, 09_0129, 09_0169 protostar/yso
AB Aur 3 EXES, FIFI-LS, FORCAST 02_0079, 05_0138, 07_0049, 08_0147 protostar/yso
IRC+10216 5 EXES, FIFI-LS, FORCAST, GREAT, HAWC+ 02_0115, 03_0104, 03_0146, 04_0119, 05_0048, 06_0090, 06_0144, 06_0172, 07_0188, 08_0231,7 5_0106, 90_0030, 90_0031, 90_0032, 90_0086 star
Betelgeuse 3 EXES, FIFI-LS, GREAT 02_0004, 05_0073, 09_0227, 09_0233, 75_0050, 75_0051, 75_0052 star
Eta Carina 3 FORCAST, GREAT, HAWC+ 03_0098, 05_0089, 06_0052, 07_0081 star
VY Cma 3 EXES, FORCAST, GREAT 02_0031, 04_0023, 06_0090, 08_0176, 09_0148, 86_0005 star
DR21 4 FIFI-LS, FORCAST, GREAT, HAWC+ 03_0058, 04_0057, 04_0111, 06_0014, 06_0162, 07_0013, 07_0077, 07_0225, 08_0038, 09_0079, 09_0215, 75_0046, 76_0002, 87_0001 star forming region
W3(OH) 4 EXES, FIFI-LS, FORCAST, GREAT, HAWC+ 03_0080, 04_0020, 04_0023,0 8_0038, 70_0002, 70_0301, 70_0509, 70_0609, 82_0020, 83_0435, 83_0618, 90_0084, 90_0086 star-forming region