NGC3556 / M108, NGC3587 / M97
Astrobin: https://www.astrobin.com/267t4z/ Astrometry: http://nova.astrometry.net/user_images/4229587#annotated 21 lights ISO400 600sec with UHC Optolong 2″ filter, 14/12/2020 William Optics Zenithstar 61 APOCanon ESO 500d Full spectrum IR cutSkywatcher…
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