Solar K-Line

Experimenting without telescope :
Single full Sun image (20131220-02:31 UT) with Finepix HS 10 + extender 1.5 (RAF, 1/200s, FN 5.6, ISO 100, F 1080 mm)
+ cunstom made (Jean-Jacques Poupeau) 1.25" to 37mm adapter ring + 37-58 mm step down ring + 1.25" Baader K-line filter

Here without extender >

From SER files >

2013 0523 -12:13 UT, Trial mosaic of 4 fields >