UNCN2 Gen. 2 Focuser - no base

Codice articolo: UNCN2-G2-nobase

• UNC Gen. 2 Newtonian Focuser without base, can be purchased separately ( product code for bases TSNB180-G2 or TSNB230-G2 or TSNB300-G2 )
• 
  
• Short 2" focuser for Newtonian telescopes with base for astrophotography and observation - with intermediate thread for screw adaptations

  8x large dimensioned ball bearings for a clean bearing of the drawtube.
  Adjustment of the drawtube by rack and pinion drive - even at maximum load the adjustment is sensitive and slipping of the draw tube is impossible
  M54x0.75 intermediate thread between 2" receptacle adapter for screw connections - the drawtube can be extended with optional M54 extension tubes
  No tilting possible when clamping the focuser - clamping takes place directly on the adjustment shaft, thus the focus position is held 100%.
  Flexible base for telescope tubes from 230 mm included - suitable for Newtonian telescopes with 8" aperture and larger
  Short height including base - only 58 mm to the 2" receptacle - only 50 mm to the M54x0.75 female thread of the drawtube
  Connections on the eyepiece side - M54x0.75 female thread, 2" and 1.25" with self-centering adapter

The advantages and product features of the UNCN2-G2 focuser:
Highest rigidity - the drawtube is held by 8 ball bearings and the adjustment of the drawtube is done via gear drive
22 mm adjustment range via the gear drive
The focuser holds up to 5 kg with full accuracy
M54x0.75 intermediate thread for screw adaptations or if the drawtube needs to be extended, suitable extension tubes are available from us.
One of the shortest focusers in its class with only 58 mm overall height up to 2" and only 50 mm overall height to the M54x0.75 thread when the drawtube is retracted
Easy attachment to existing tubes, the base is included in delivery
The focuser is not clamped by pressure on the drawtube, which can cause tilting. It is clamped by the adjustment shaft. This keeps the focus position at 100% without the risk of tilting, which is important for astrophotography
1:11 dual speed provides accurate manual adjustment, especially for fast telescopes this is a must.
Motorized controls for the focuser are available.

What is the function of the screws on the bottom?

A: Mounting screws for the focus drive. Have to be tightened carefully.

B: Access bore for the locking screw of the 1:10 part

C: Locking screw for the planetary gear housing

D: Access bore for the left focus wheel locking screw

E: Adjustment screw for rack & pinion spacing

Technical data

Construction: RAP focuser - ball bearing mounted
Load capacity: up to 5 kg
Bearing: 8 ball bearings
Adjustment: Helical toothed rack
Minimum height: 58 mm up to the 2" receptacle
Eyepiece side connections: 1.25", 2" and M54x0.75 female thread on drawtube
Adjustment range of the focuser: 22 mm
Reduction ratio: 1/11
Locking: Locking screw on the adjustment shaft
Fixing of the focuser to the base: Self-centering ring dovetail with 80 mm diameter
Distance of holes in the base: 55 mm lengthwise and 92 mm crosswise to the tube and additionally two oblong holes lengthwise to the tube
Weight: 900 grams