May 3

Bahtinov Mask

Finally, I got my Bahtinov mask 🙂 Hopefully it will fulfill my expectations… The mask has a pattern wich generates spikes around a (bright!) star. This helps reach good focus. If the spikes are centered, the star is in focus.  

Apr 28

M13

280mm @ f/7.1 Unfortunately only the first 20 subs (from about 80) were in focus….

Apr 24

Solar Filter

So, I’m prepared for the Mercury transit in May (2016). Used foil: Baader Solar Filter OD 5.0. Hopefully it will be a clear view to watch and record the transit with the Skywatcher Explorer 130P…