1. Cross-Calibration Between All Three Instruments Lin Yan, Jason Surace (Spitzer Science Center)

2. Intent Check flux calibration consistency between IRAC 8µm and IRS-SL, MIPS 24um and IRS- LL. Sample Stars: 7 (K, A) Red extragalactic objects: 4 Asteroids: 3 Point sources only, mix of blue and red objects. All data processed through S11 or S12. Spectra from Yan, IRAC and MIPS points from Surace, Yan, and Rho.

3. Stars: HD172728

4. Stars: HD173511

5. Stars: HD166780

6. Stars: HR6348

7. Stars: HD170693

8. Stars: HR4138

9. Stars: HD58142

10. Mrk279

11. IRAS 05189-2524

12. Arp220

13. Mrk231 Magenta: ISO SWS Cyan: IRAC 8, MIPS24, IRAS 25 Blue: ISO LWS Red: MIPS SED

14. Asteroids: Isara

15. Asteroids: Geometria

16. Asteroids: Amalia

17. Conclusions and Future Plans Based on the data for 7 stars + 4 AGN, we found all MIPS 24um fluxes are consistent with the IRS spectra within 10%. Comparing IRAC 8um and IRS short low spectra, we found that the consistency is within 10%. This is based on 8 sources which have both IRAC and IRS data. More is needed. For red AGNs, consistency is extremely good.