Now with the Calcium K line filter at hand, and some decent sky, I imaged Venus. The first problem was finding it, from my hole-in-the-wall balcony and not an exact polar alignment. To be able to pull such a feat, I had to build something: from some arduino modules, I put together an inclinometer to get the tube’s altitude, and then look for the planet at the suspected orientation for the given azimuth.
I used my usual gear, with the mentioned enhancement, with a mono camera and the Baader K-line Calcium filter, HEQ5, N250/1200, TSO ADC, ASI 178MM, Calcium K-line, and ASI224MC with the UV/IR, home observatory, mountpusher





