| 3C273-20200121-S001-R001-B-041557.fts |
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| Only less than 50 stars was detected |
| 3C273-20200121-S001-R001-I-041948.fts |
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| Only less than 50 stars was detected |
| 3C273-20200121-S001-R001-R-041832.fts |
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| Only less than 50 stars was detected |
| 3C273-20200121-S001-R001-V-041716.fts |
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| Only less than 50 stars was detected |