which eyepiece

[John]

7 minutes ago, Bostonteax said:

Thanks John, so I need another telescope for close up planetary stuff then ? Lol

Your ST102 can produce high power views if you use a barlow lens or a short focal length eyepiece but they will be affected by the CA that the scope produces so it's not the best way to use the scope. If you are just an occasional lunar / planetary observer then that might be fine.

 

 

[bomberbaz]

I had an ST80 a couple of years back which I let go due to the CA. TBH I wish I had just slapped a yellow r blue filter on it and presto, CA gone