| 3C273-20190613-S001-R001-B-221130.fts |
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| Only less than 50 stars was detected |
| 3C273-20190613-S001-R001-I-221517.fts |
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| Only less than 50 stars was detected |
| 3C273-20190613-S001-R001-R-221402.fts |
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| Only less than 50 stars was detected |
| 3C273-20190613-S001-R001-V-221248.fts |
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| Only less than 50 stars was detected |