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[69901] 90FL F4 Astrograph Set (M75 Helical Focuser) |
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| Part # | 69901 |
| Description | 90FL F4 Astrograph Set (M75 Helical Focuser) |
| Aperture | 90mm Fluorite |
| Focal length | 360mm |
| F-ratio | 4.0 |
| Lens configuration | 6 elements in 5 groups |
| Coating | Fully multi-coated |
| Physical length | 385mm |
| Tube diameter | 80mm |
| Weight | 2.1 kg |
| Filter | 82mm (front cap) & 48mm in front of reducer |
| Parts included | 2591, 7875, 7051, 7026, 7801, 7507, 7352, 7872 & 7000 |
| Notes |
