length lower limit = 3 days visible in white light at limb July 8; -9; -10; Visible on both limbs July 8-10, possibly also July 21-22 Evolution comments = BIG PCF system. Kinked NL straightens over a two and a half months. At least one eruption, June 6, when it is mostly still behind the limb. Appears larger (wider, higher) and darker at the limb before erupting in CME on July 23. Unfortunately, MLSO stops observing before this CME. Neutral line orientation at the limb = 47.67 +/- 19.35 degrees from line-of-sight projected onto solar disk; 61.91 +/- 9.55 degrees from N-S CME/dimmings association = CME July 23; prominence eruption on July 23; Active region association = N/A Filament/FC association = PCF-N; channel extending across disk, nearly parallel the whole way Other comments: cavity visible in EUV Filament - only visible in H-alpha or EUV Necking - straight up and down neck Cavity list (e.g. Tables 2 + 3) Full list of cavity days observed List of best cavity days (SET 1) observed (e.g. Table 1) CMEs associated with cavities (e.g. Tables 7 + 8) BACK TO TOP