1. A Coded-Mask CCD Camera for MAXI-2 Taro Kotani, Tomohiko Iguchi, Takayuki Shiraki, Kazutaka Yamaoka, Atsumasa Yoshida (Aoyama Gakuin Univ.), Takuya Kato,Shigeyuki Sako (Univ. of Tokyo), for The MAXI Team !!! DRAFT !!!

2. Concepts An all-sky monitor with CCD cameras optimized for ISS Better position determination than GSC and SSC –Uncertainty less than 0.1 deg in 1 orb (0.1 mCrab) To be built in time (Earliest launch: 2015) Affordable within the budget

3. Basic Design X-dimension of FOV: w/h Y-dimension of FOV: d/h (might be collimated by a few slats) –  Longer exposure time for a source –  Better statistics ΔΘx ～ u x /(hN 1/2 ) –Larger h desired ΔΘy ～ fu y /(hN) –Larger h desired CCD array 1-dim coded mask w d uxux uyuy h f: open fraction orbital motion Unit camera

4. Constraints Electricity/thermal output/budget –  CCD area –  FOV h  position uncertainty

5. Simulation Sensitivity Position determination Spectroscopy/temporal analysis