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Antlia Ha 3nm HALO :(
My first sub with these filters.. Ha 3nm filter.. Halo shown.
This is a mag 3.8 star belonging to the Dolphin Head nebula. SH2-308
I was using an f/3 reducer, and ive heard the faster the optics the more likely a halo can occur. There were no halos on the Oiii 3nm filter, which is interesting.
Very very sad face.
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