Good quality lens for its price! :)
The delivery was really fast by Chinese standards! 2 weeks !! oday I set up my travel mount with my third telescope: EXPLORE SCIENTIFIC ED APO 102mm f / 7 FCD-1 In addition a Celestron zoom eyepiece and for comparison a Celestron Barlow lens 2x. Since I only had one crane far away, I can't say 100% !! YOUR Datyson 3x Barlow lens was of course darker in the end, which is normal. The image sharpness with your Barlow lens was excellent SHARP !! I am thrilled by the result !! The price-performance ratio is really SUPER !! Thanks !! Kind regards DIDI from Germany[Smile][Waving]