Hi Grahame,
There is some good advice there about waiting, but for what it is worth I got a Televue 32mm Plossl (62x) for my CPC800- which gives the maximum possible true field for a 1 1/4" eyepiece- great for putting the whole moon (and a bit more) into the FOV, and really nice for larger nebulae.
If you want a larger true field, you will need to get 2" eyepieces.
I often use a 13mm T6 Nagler (154x)- but that is a lot to pay for a first eyepiece unless you really know what you want.
For high power I have built up a range of eyepieces over the years, but a very good value range is the Long Perng ones ($79 at Andrews at present): I often use the 9mm which gives a nice sharp view at 222x. They all have 20mm eye-relief which is great if you wear glasses. They also have 6mm, 12.5, 14.5 and 18 in their range.
- and I often use a 7.5-22.5mm Williams zoom when I am using the scope for public nights. The only problem with the zoom is that it only gives a 27' true field at low power (as opposed to the 45' true field for the 32mm plossl). All zooms give smaller apparent fields at lower power than higher power, and a lot of people don't like them because they feel they don't have the same quality as dedicated fixed FL eyepieces. If you go down the zoom track I think it is important to spend a bit more and get a quality one. (Unfortunately Williams don't make the 7.5-22.5 any more).
GaryA: sorry to hear of your hassles- but I haven't had the same problems as you with asking for advice. Generally people have been very helpful, and rarely in my experience do they have an axe to grind. You might try the above as well...
- and for both of you: I found the diagonal that is provided with the CPC800 wasn't very good quality. I replaced it with a 2" GSO quartz one: and all of a sudden I got stars with proper Airy discs instead of little fuzzy blobs... An essential upgrade in my opinion. GaryA: you will also need to give the scope time to reach ambient temperature to get the best views. I have had some wonderful views with mine (especially after I got the new diagonal): and I have even seen something where the Enke division should be on Saturn.
Good high power views are dependent on reasonable eyepieces (almost any eyepiece will give sharp views right in the centre of the field), proper cool-down, proper collimation (usually not a problem with the CPC800), a good diagonal, and good atmospheric conditions- so don't expect a sharp view over 200x every night!
All the best, and happy viewing,
Dean