Sky-Watcher Virtuoso GTi 130P - 130 mm f/5 GoTo Collapsible Dobsonian with FREE Barlow & UHC Filter! - S21210 Focuser Extension Tubes 9") Exit Pupil: 4 mm

9") Exit Pupil: 4 mm - 1

Down to the thickness of the glass used in the included fully-multicoated optical window or optional imaging filter

38 in (35 mm)

or any field work

Sky-Watcher Virtuoso GTi 130P - 130 mm f/5 GoTo Collapsible Dobsonian with FREE Barlow & UHC Filter! - S21210 Focuser Extension Tubes 9") Exit Pupil: 4 mmGet a FREE UHC Filter & 3X Barlow, a value worth $134. 95, when you buy this 130mm Sky Watcher GTi Dobsonian Telescope! UHC Filter: An Ultra High Contrast, or UHC filter can be used to help block out the effects of contrast lowering light pollution! It's especially great when viewing in urban areas, but even if you are lucky enough to have darker skies, this filter will up the contrast between that sky and objects you are observing. 3X Barlow: A