Hello, everyone,
I like to use the NBZ and NB3 for my narrow band subs. Since I'm shooting in a Bortle 5 zone, I use the Baader Neodymium filter (Moon and Skyglow) for the RGB shots.
The IDAS filters are 2.5mm thick, the Baader filter 2mm. Since the Epsilon is very sensitive when it comes to the distance between corrector and camera sensor, I also put a 0.2 mm spacer ring in between when I use the IDAS filters to compensate for the 0.5 mm difference to the Baader filter . This gives the camera a different angle of rotation, which I compensate with a rotation adapter.
However, the collimation of the epsilon always suffers from this. How do you solve this problem?

Kind regards, Markus
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