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Hi Christine and welcome to IIS
Firstly are you able to focus OK with the 25 and 10mm eps without the barlow. If so it is more likely that conditions are not very good. The 10mm EP will give you 120x in your scope so the barlow is gioving you 240x, which is quite high power for a scope that size. Conditions need to be fairly good to get a clear image of a bright planet at that power.
Cannot offer any advice on the go-to as I am a purely manual operator when it comes to scopes. It may be helpful to those who are experts if you describe your setup procedure in a bit of detail.
Malcolm
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