A Coded-Mask CCD Camera for MAXI-2 Taro Kotani, Tomohiko Iguchi, Takayuki Shiraki, Kazutaka Yamaoka,...
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Transcript of A Coded-Mask CCD Camera for MAXI-2 Taro Kotani, Tomohiko Iguchi, Takayuki Shiraki, Kazutaka Yamaoka,...
![Page 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.](https://reader035.fdocuments.us/reader035/viewer/2022062504/5a4d1b7a7f8b9ab0599b8b45/html5/thumbnails/1.jpg)
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 !!!
![Page 2: A Coded-Mask CCD Camera for MAXI-2 Taro Kotani, Tomohiko Iguchi, Takayuki Shiraki, Kazutaka Yamaoka, Atsumasa Yoshida (Aoyama Gakuin Univ.), Takuya Kato,Shigeyuki.](https://reader035.fdocuments.us/reader035/viewer/2022062504/5a4d1b7a7f8b9ab0599b8b45/html5/thumbnails/2.jpg)
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
![Page 3: A Coded-Mask CCD Camera for MAXI-2 Taro Kotani, Tomohiko Iguchi, Takayuki Shiraki, Kazutaka Yamaoka, Atsumasa Yoshida (Aoyama Gakuin Univ.), Takuya Kato,Shigeyuki.](https://reader035.fdocuments.us/reader035/viewer/2022062504/5a4d1b7a7f8b9ab0599b8b45/html5/thumbnails/3.jpg)
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 ~ ux/(hN1/2)– Larger h desired
• ΔΘy ~ fuy/(hN)– Larger h desired
CCD array
1-dim coded mask
wd
ux
uy
hf: open fraction
orbital motion
Unit camera
![Page 4: A Coded-Mask CCD Camera for MAXI-2 Taro Kotani, Tomohiko Iguchi, Takayuki Shiraki, Kazutaka Yamaoka, Atsumasa Yoshida (Aoyama Gakuin Univ.), Takuya Kato,Shigeyuki.](https://reader035.fdocuments.us/reader035/viewer/2022062504/5a4d1b7a7f8b9ab0599b8b45/html5/thumbnails/4.jpg)
Constraints
• Electricity/thermal output/budget CCD area FOV
• h position uncertainty
![Page 5: A Coded-Mask CCD Camera for MAXI-2 Taro Kotani, Tomohiko Iguchi, Takayuki Shiraki, Kazutaka Yamaoka, Atsumasa Yoshida (Aoyama Gakuin Univ.), Takuya Kato,Shigeyuki.](https://reader035.fdocuments.us/reader035/viewer/2022062504/5a4d1b7a7f8b9ab0599b8b45/html5/thumbnails/5.jpg)
Simulation
• Sensitivity
• Position determination
• Spectroscopy/temporal analysis