PK 217+2.1   14.5 mag  15"

PK 217+2.1 photo

2023. Jan. 20 etc.   C14 35cmF11+reducer F7, ZWO ASI294MM  Mono: IDAS NB1 filter 5sec*511, RGB:   Baader Planetarium RGB filter 5sec*267, 370, 344   total 124.3min


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