JodieH

Thank you for the clarification @Waddensky. It's interesting to learn about all the factors to consider for the best viewing. 

@Geoff Barnes thanks for providing a review of the EPs. 

Based on what has been said, I think I'm going to stick with that range and get the 6mm.

I have been stuck in a cloud of sea mist for a few days now! Fingers crossed it will shift soon as I am eager to look up

Hey everyone 

I have a Celestron Starsense Explorer DX 102AZ on the way. 

https://www.celestron.com/products/starsense-explorer-dx-102az

660mm

F6.5

I was wondering if someone could please recommend which size EP to buy for viewing planets and the moon? 

https://www.firstlightoptics.com/skywatcher-eyepieces/skywatcher-uwa-planetary-eyepieces.html#faq

Sky watcher ULA Planetary (my budget is £40)

I've read on another thread that sometimes 9mm can outperform a 4mm with a fast telescope as more magnification can make the viewing duller? I was hoping for the best magnification that is also crisp. 

Thank you for your help.