This accessory is an extension of the Celestron
Universal T-Adapter , which adds a
2X Barlow lens .
Therefore, it is a very practical set since it allows you to
adapt your camera to take
photos of space and at the same time it adds a
greater magnifying power, thanks to the 2X Barlow lens, which also the focal length and the ratio focal. It will be useful for those telescopes that do not give enough
focus to the primary focus , this happens in some
Newtonian models when you want to take planetary photography and more distant deep sky objects.