Your new telescope will need a star diagonal (or erecting prism), one or more eyepieces, and a mount to function.  Since people have differing preferences regarding these items, Stellarvue offers these accessories separately.  Here are our recommendations:

1.  Star Diagonal (or Erecting Prism).  If the telescope is going to be used for Astronomy, a Star Diagonal is a necessity.  For terrestrial use, the Erecting Prism is required to make the normally "upside down" image inherent in astronomical telescopes "right side up".   Stellarvue's D1029ED 2" Star Diagonal is a high quality diagonal with an oversized 1/10th wave mirror and 99% dielectric coatings.  Additionally it comes with a 1.25" adapter which gives this diagonal the flexibility to use both 2" and 1.25" eyepieces.

2.  Eyepieces.  There are numerous styles and brands of eyepieces, but they all are designed to do one thing:  magnify the light brought to a focus by the primary objective of the telescope.  Actual magnification (sometimes called "power") can be changed by utilizing eyepieces with different focal lengths.  As an observer, you will ultimately want eyepieces that will provide you with a range of power:  low power to view deep sky objects, medium power to study more detail and structure in deep sky objects, and high power for lunar and planetary viewing.

Low Power eyepiece options:

Stellarvue E4032 32mm Plossl:  low cost and provides a 50 degree field of view

Celestron 23mm Luminos:  A premium eyepiece that offers an 82 degree field of view

Televue 22mm Nagler:  A premium eyepiece that offers an 82 degree field of view

Medium Power options:

Stellarvue 12mm Plossl:  a quality low cost eyepiece with a 50 degree field of view

Celestron 10 or 15mm Luminos:  Premium eyepieces that offer an 82 degree field of view

Televue 9mm Nagler:  A premium eyepiece with an 82 degree field of view

High Power options:

Stellarvue Planetary Eyepieces (2.9mm, 4.9mm, 6.1mm) have 20mm of eye relief and a 55 degree field of view.  Stellarvue uses these eyepieces to star test Stellarvue telescopes

3.  Mounts.  There are two basic mount styles to consider for use with this telescope:  Alt-azimuth and equatorial.  Alt-azimuth mounts are lighter and easier to use.  The Stellarvue M2 mount is a good choice for this telescope.   The Astro-Telescopes MG2 alt-azimuth is another good option for scopes up to 115mm.  The MG2 also has a lower damping time than other forked mounts.

Equatorial mounts are heavier and require skill to properly align.  Most come with "Go To" capability, utilizing a star database and a small computer to find objects in the sky at the press of a button.   Stellarvue recommends two for this scope: (a)the lighter and less expensive Celestron CG5, or (b) the heavier but more accurate Celestron CGEM.  Since equatorial mounts are aligned with the north celestial pole, they may also be used for astrophotography.