Above: TeleVue 101mm telescope optical tube assembly with lens shade retracted (without optional mount) |
Above: TeleVue '101' telescope optical arrangement; 1. air spaced doublet objective, 2. mounting collar, 3. doublet, 4. 2' focuser, 5. 'Everbrite' 2 inch mirror diagonal, 6. 2' to 1.25' reducer, 7. eyepiece (20mm Plossl is standard) |
Above: Similar to the 101's focuser, shown is the TeleVue 2' Focuser and 2' diagonal in the textured finish as provided with the 102 telescope (54,505 bytes). |
Specification | |
---|---|
Clear aperture: | 101.95mm (4') |
Focal length: | 540mm (21.26') |
Resolution (visual): | 1.15 arc seconds |
Resolution (photo): | 260 line pairs per mm |
Coatings: | Multi-layer |
Magnification range: | 10x to 360x |
Tube assembly: | Powder coat finish, 30' aluminum tube; fully baffled, permanently aligned cell construction |
Focuser type: | 2 inch rack and pinion |
Focuser Travel: | 2-3/8 inches |
Telescope length with diagonal: | 83.8cm (33') dew cap retracted |
Weight with 2' diagonal: | 12 lbs. (5.5 kg) |
Weight in carrying case: | 21 lbs. (9.6 kg) |
ShippingWeight: | 32 lbs. (14.5 kg) |
Shipping Dimensions: | 40 x 13 x 10 inches |
35mm prime-focus field: | 3.7 x 2.6 x 4.5 degrees @ f10.8 |
35mm field with 2x Barlow: | 1.9 x 1.3 x 2.4 degrees @ f10.8 |
Standard Eyepiece: | TeleVue 20mm Plossl (20X), 1.25 inch Dia. |
Eyepiece | Magnification | Actual field of view | Exit pupil |
---|---|---|---|
35mm Panoptic | 15x | 4.11 degrees | 6.54mm |
31mm Nagler Type 5 | 17x | 4.42 degrees | 5.80mm |
27mm Panoptic | 20x | 3.24 degrees | 5.05mm |
22mm Nagler Type 4 | 25x | 3.3 degrees | 4.11mm |
22mm Panoptic | 25x | 2.64 degrees | 4.11mm |
20mm Plossl | 27x | 1.81 degrees | 3.74mm |
17mm Nagler Type 4 | 32x | 2.58 degrees | 3.18mm |
12mm Nagler Type 4 | 45x | 1.81 degrees | 2.24mm |
9mm Nagler | 60x | 1.31 degrees | 1.68mm |
8mm Radian | 68X | 0.88 degrees | 1.50mm |
6mm Radian | 90x | 0.67 degrees | 1.12mm |
5mm Radian | 108x | 0.56 degrees | 0.93mm |
Eyepiece | Mag. w/2X 2 Inch Barlow | Actual field of view | Exit pupil |
---|---|---|---|
35mm Panoptic | 31x | 2.05 degrees | 3.27mm |
31mm Nagler Type 5 | 35x | 2.21 degrees | 2.90mm |
27mm Panoptic | 40x | 1.62 degrees | 2.52mm |
22mm Nagler Type 4 | 49x | 1.65 degrees | 2.06mm |
22mm Panoptic | 49x | 1.32 degrees | 2.06mm |
20mm Plossl | 54x | 0.95 degrees | 1.87mm |
17mm Nagler Type 4 | 64x | 1.29 degrees | 1.59mm |
12mm Nagler Type 4 | 90x | 0.91 degrees | 1.12mm |
9mm Nagler | 120x | 0.65 degrees | 0.84mm |
8mm Radian | 135X | 0.44 degrees | 0.75mm |
6mm Radian | 180x | 0.33 degrees | 0.56mm |
5mm Radian | 216x | 0.28 degrees | 0.47mm |