| 3C273-20210310-S001-R001-B-010826.fts |
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| Only less than 50 stars was detected |
| 3C273-20210310-S001-R001-I-011222.fts |
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| Only less than 50 stars was detected |
| 3C273-20210310-S001-R001-R-011104.fts |
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| Only less than 50 stars was detected |
| 3C273-20210310-S001-R001-V-010947.fts |
|
| Only less than 50 stars was detected |