If you're considering buying a 40mm Plossl, read why we'd recommend getting 30mm Plossl instead. 

If you're baffled by all the different mounts offered by different vendors, here's a table that may help you sort them out.

Some equatorial mounts are unusable in equatorial latitudes due to design limitations. Here's a list of known mounts that fall in this category

If you're considering buying a unit power finder (i.e. it doesn't magnify the view), then do consider either the Telrads or the Rigel Quikfinders. The pros and cons of them are reviewed here.

If you're considering buying a filter for viewing DSOs or for astrophotography, read this for a quick summary of what to consider. Also includes a section for colour filters and what they can enhance for planets, moon, and comet views.

What are Tidal Forces