I am spending a little bit of time on the SEBEN to improve it performance only because I bought it and don't want to see money go down the tube (Pardon the pun).
Primarily all the accessories and lenses, filters are gone. The next step for me is to replace the focuser. But that is difficult as it is a short tube with long focal length. Consequently it has a barlow installed in the end of the focuser to increase the focal length. The problem as with all their filters is poor quality, not to mention it can be coliminated using a laser.
If I did the research first i would have elected to not to buy it. Ebay trading is suspect at the best of times and the reporting on ebay is usually only related to delivery.
I feel the most people that buy the scope or accessories would eventually be put in the cupboard never to be used again.
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