rajanp

Yep that was my initial thought - I'd probably get some more use out of the 8mm given the 10mm that came with the scope doesn't seem as good as the 25. 

How necessary is a moon filter?

How do you find the 5mm BST eyepiece with the 200P? I'm trying to figure out whether to get this or the 8mm first for looking at the moon and planets. 

Thanks for all your replies and help here. I was trying to observe through a window and hadn't realised this affected the image so much - I took the scope outside for the first time and the detail in the moon looked great! Looking forward to seeing what some better eyepieces will deliver now!

Hi all, firstly I'm a complete beginner and I've just purchased a Sky-Watcher 200p Dobsonian scope. I've gone through the process of collimation following Astro-Baby's guide and the collimation pattern I see through my cheshire looks pretty good now - I'm seeing concentric circles with the centre spot on the Cheshire in the middle of the primary mirror ring. I'm noticing something a bit odd using the 25mm eyepiece that came with the scope however, the image seems to jump around moving my eye from exactly on-axis with the eyepiece to slightly off-axis. Additionally the image isn't hugely sharp but i'm not sure if I'm just expecting too much from a pretty basic eyepiece and scope? Does anyone know if an image appearing to shift around moving when moving your eye line at the eyepiece from on-axis to slightly off indicates that collimation is off or it's an issue with the eyepiece? 

I hope that makes sense and someone might be able to help!