[trickybilly]

First I would like to say a big thank you for this community who have helped me to start my hobby some weeks ago and see many beautiful objects so far: Mars, Venus, the Andromeda and Whirlpool galaxy, M42, M35, M36, M38, M41, M45, M57, Hyades and a satellite.

Question: my Skywatcher 200/1200 telescope with 10mm eyepiece gives 120X magnification. What do you recommend to buy next a) a 6mm Goldline eyepiece b) a 2 or 3x Barlow? or something else? I see there are achromatic, apochromatic and "polychromatic" Barlow available... can you please say in short what they mean, and which is the best? Is there any loss of quality using Barlow compared to an eyepiece? My eyepieces are Plössl and I have read on the internet that they have problems with Barlow lenses - is this true?