Updated on: 14 Oct 2017

 

Optical Tube Assembly (OTA)

25 OTA (6024) . . . HK$980 (accepting order)

 

- Focal length 175mm (f/7), 150g, 32mm tube diameter, 1.25" ocular holder

 

35ED OTA (6037) . . . HK$2,180 (accepting order)

 

- Focal length 200mm (f/5.6), 209g, 45mm tube diameter

- Objectives only, 70g (2037) . . . HK$1,750 (accepting order)

  

50 objectives only (2050) . . . HK$650 (in stock 現貨)

 

- Focal length 250mm (f/5)

- Main tube and draw tube not included

 

55FL OTA (6255) . . . HK$5,350 (accepting order)

 

- Focal length 250mm (f/4.5), 533g, 60mm tube diameter

- Objectives only, 205g, (2555) . . . HK$3,850 (accepting order)

 

67FL OTA (6268) . . . HK$6,800 (accepting order)

 

- Focal length 300mm (f/4.5), 689g, 60mm tube diameter

- Objectives only, 402g (2568) . . . HK$5,690 (accepting order)

 

71FL OTA (6370) . . . HK$7,110 (accepting order)

 

- Focal length 400mm (f/5.6), 778g, 60mm tube diameter

- Objectives only, 418g, (2572) . . . HK$5,820 (accepting order)

 

71FL OTA (6170) . . . HK$7,110 (accepting order)

 

- Focal length 400mm (f/5.6), 1.2kg, 80mm tube diameter

 

77EDII OTA (6279) . . . HK$5,820 (in stock 現貨)

 

- Focal length 510mm (f/6.6), 1.7kg, 80mm tube diameter

- Objectives only, 500g (#2179) . . . HK$4,520 (in stock 現貨)

 

89ED OTA (6187) . . . HK$8,920 (accepting order)

 

- Focal length 600mm (f/6.7), 2.1kg, 80mm tube diameter

- Objectives only, 860g (2589) . . . HK$7640 (accepting order)

 

90FL OTA (6291) . . . HK$12,470 (accepting order)

 

- Focal length 500mm (f/5.6), 2kg, 80mm tube diameter

- Objectives only, 950g (2591) . . . HK$11,200 (accepting order)

 

107FL CR set (6207) . . . HK$19,700 (accepting order)

 

- Carbon fiber main tube, rack & pinion focuser, fluorite lens, 2 elements in 2 groups

- Focal length 600mm (f/5.6), 3.7kg (2.8kg OTA only), 80mm tube diameter

- Including pair tube rings with base, 6x30 finder, diagonal, 9mm and 20mm eyepieces

- Parts included 2107, 7120, 7026, 7801, 9850, 7508, 7522, 7317, 7779, 8909, 8920, 2x7085, 2x7020, 3200, 3125, 0610 & 0630 as shown in photo

 

107FL BU-1 set (6209) . . . HK$18,900 (accepting order)

 

- BU-1 helical focuser, 95mm moving range

- Focal length 600mm (f/5.6), 3.4kg, 80mm tube diameter

- Including all items as shown in photo, except the camera and camera mount

- Parts included 2107, 9000, 7603, 7000, 3200, 3125 as shown in photo (camera not included)

 

107FL CH set (6210) . . . HK$19,700 (back ordered)

 

- Carbon fiber drawtube, heavy duty high quality helical focuser

- Focal length 600mm (f/5.6), 3.2kg (2.8kg OTA only), 80mm tube diameter

- Including all items as shown in photo, except the camera and camera mount

- Parts included 2107, 7875, 7070, 7700, 7507, 7602, 7000, 2x7085, 2x7020, 3200, 3125 as shown in photo (camera not included)

 

** 107FL objectives only, 1.9kg (2107) . . . HK$16,980 (accepting order)

- Dew shield diameter 127mm

 

Heavy duty helical focuser (7875) . . . HK$3,820 (accepting order)

- 646g, 30mm moving range 

 

Feather Touch focuser FTF2008B-57mm (9797) . . . HK$4,280 (in stock 現貨)

 

- Including M68.8 rotary adapter for Borg 80mm main tube connection

- With two Borg 7459 M57 female to female adapters on draw tube both ends

- 16mm travel range

- Path length same as 7835 helical focuser

 

Tube Ring

60mm tube ring, one piece (7065) . . . HK$470 (accepting order)

 

 

80mm pair tube ring (7083) . . . HK$650 (in stock 現貨)

 

 

0.85x Reducer DG, 75g (7885) . . . HK$1,790 (in stock 現貨)

 

 

0.85x Reducer DGL (7887) . . . HK$2,280 (in stock 現貨)

 

  

0.72x Quadruplet super reducer, 270g (7872) . . . HK$3,850 (in stock 現貨)

 

- Specifically designed for the 90FL and 71FL objectives

 

1.08x DG flattener, 225g (7108) . . . HK$2,680 (in stock 現貨)

 

 

1.4x Tele-extender, 180g (7214) . . . HK$1,950 (in stock 現貨)

 

- For 300mm ~ 640mm focal length refractors

 

1.4x Tele-extender, 220g (7215) . . . HK$2,580 (in stock 現貨)

- For 500mm ~ 1000mm focal length refractors

 

M36.4 to 1.25"/T2 helical focuser (7315) . . . HK$660 (in stock 現貨)

 

- Ocular will not rotate during focusing, 10mm adjusting range

 

Other stocked items:

1601, 1606, 1620, 31012, 4013, 5003, 5005, 5007, 5011, 5013, 5017, 5416, 5504

7000, 7026, 7050, 7051, 7065, 7070, 7083, 7084, 7101, 7130, 7151, 7315, 7316, 7318, 7362

7401, 7403, 7423, 7425, 7458, 7459, 7502, 7504, 7505, 7507, 7509, 7517, 7519, 7522

7601, 7602, 7603, 7604, 7615, 7616, 77531, 77532, 7757, 7777

7801, 7837, 7923, 9795

 

* Please ask for all other Borg items