(11 May 2025, initial version by Aki Takeda)
(28 May 2025, added thin_Be limb data and pointing info.)
Initial purpose was to confirm the stray light level of the phase 7 (since 11-May-2024) after one year.
ID No. | date & time (UT) | XOB | purposes (link: obtained plots ) | memo |
1 | 3-May-2025, 17:19:30 | 1D31 | light crv., Al-mesh (1.4s) and Al-poly (2.0s) at DC. | previous bakeout + 3 day. |
2 | 4-May-2025, 17:51:30 | 1D32 | light crv., thin-Be (11.3s) at DC. | prev. b.o. + 4 day. |
3 | 5-May-2025, 18:24:00 | 1D33 | light crv., med-Be (22.6s) at DC. | prev. b.o. + 5 day. |
4 | 6-May-2025, 14:01:30 | 1D31 | light crv., Al-mesh (1.4s) and Al-poly (2.0s) at N-limb at HOP130 | prev. b.o. + 6 day. |
5 | 6-May-2025, 15:39:30 | 1D33 | light crv., Al-mesh (1.4s) and Al-poly (2.0s) at S-limb at HOP130 | prev. b.o. + 6 days. |
6 | 6-May-2025, 17:18:00 | 1D34 | light crv., med-Al (32.0s) at DC | prev. b.o. + 6 days. |
7 | 6-May-2025, 22:12:30 | 1D31 | light crv., Al-mesh (1.4s) and Al-poly (2.0s) at E-limb at E-coal. | prev. b.o. + 6 days. |
8 | 7-May-2025, 17:50:00 | 1D31 | light crv., Al-mesh (1.4s) and Al-poly (2.0s) at W-limb | prev. b.o. + 7 days. |
9 | 8-May-2025, 15:06:00 | 1D31 | light crv., Al-mesh (1.4s) and Al-poly (2.0s) at (-21,-492) at HOP412 | prev. b.o. + 8 days. |
10 | 8-May-2025, 18:22:30 | 1D36 | light crv., Al-poly/Ti-poly (4.0s) and Al-poly (2.0s) at DC | prev. b.o. + 8 days. |
11 | 8-May-2025, 21:38:30 | 1D31 | light crv., Al-mesh (1.4s) and Al-poly (2.0s) at (-21,398) at HOP412 | prev. b.o. + 8 days. |
12 | 9-May-2025, 17:16:30 | 1D32 | light crv., thin-Be (11.3s) at W-limb | prev. b.o. + 9 days. |
13 | 10-May-2025, 17:48:30 | 1D32 | light crv., thin-Be (11.3s) at E-limb | prev. b.o. + 10 days. |
14 | 11-May-2025, 18:21:00 | 1D32 | light crv., thin-Be (11.3s) at N-limb | prev. b.o. + 11 days. |
15 | 12-May-2025, 17:15:00 | 1D32 | light crv., thin-Be (11.3s) at S-limb | prev. b.o. + 12 days. |
The stray light component included in the Al_mesh filter was at the same level as that of 2024. The new stray light pattern started to appear since 2023 on the E-limb images was reproduced.
- DC pointings
[NOTE] pnt. indicates the satellite pointing at the time of
data acquisition, i.e., (index.xcen, index.ycen) corrected by the
the coalignment DB.
- limb pointings
Al-mesh, 20250506(1.4s) [pbo+6d] pnt.(-33.1,955.5) |
Al-mesh, 20250506(1.4s) [pbo+6d] pnt.(3.7,-926.0) |
Al-mesh, 20250506(1.4s) [pbo+6d] pnt.(-983.9,-3.5) |
Al-mesh, 20250507(1.4s) [pbo+7d] pnt.(933.2,34.1) |
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- Other pointings
Al-mesh, 20250508(1.4s) [pbo+8d] pnt.(-23.1,-477.1) |
Al-mesh, 20250508(1.4s) [pbo+8d] pnt.(-40.7,413.8) |
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- DC pointings
- limb pointings
Al-poly, 20250506(2.0s) [pbo+6d] pnt.(-33.1,955.5) |
Al-poly, 20250506(2.0s) [pbo+6d] pnt.(3.6,-926.0) |
Al-poly, 20250506(2.0s) [pbo+6d] pnt.(-983.9,-3.5) |
Al-poly, 20250507(2.0s) [pbo+7d] pnt.(933.2, 34.1) |
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- Other pointings
Al-poly, 20250508(2.0s) [pbo+8d] pnt.(-32.8, 12.9) |
Al-poly, 20250508(2.0s) [pbo+8d] pnt.(-40.7, 413.8) |
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- DC pointings
thin_Be,20250504(11.3s) phase 7, pnt.(-15.5,12.8) |
thin_Be,20240505(11.3s) phase 6, pnt.(-16.5, 14.4) |
After PREP comparison with phase 7 & 6 |
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- limb pointings
med_Be,20250505 (22.6s), pnt.(-16.4,14.0) |
med_Be,20240506 (22.6s), pnt.(-15.3, 15.5) |
After PREP comparison with phase 7 & 6 |
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med_Al,20250506 (32.7s), pnt.(-14.4, 14.8) |
med_Al,20210512 (32.7s), pnt.(-17.0, 14.4) |
After PREP comparison with phase 7 & 6 |
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Apol+Tpol,20250508 (4.0s), pnt.(-32.8,12.9) |
Apol+Tpol,20220712 (4.0s), pnt.(-20.0, 29.0) |
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