| 3C273-20210217-S001-R001-B-023027.fts |
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| Only less than 50 stars was detected |
| 3C273-20210217-S001-R001-I-023418.fts |
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| Only less than 50 stars was detected |
| 3C273-20210217-S001-R001-R-023302.fts |
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| Only less than 50 stars was detected |
| 3C273-20210217-S001-R001-V-023146.fts |
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| Only less than 50 stars was detected |