TEC APO250VT f/8.8 Fluorit The TEC 250 mm fluorite refractor provides a 2200 mm focal length at f/8.8. Its air-spaced fluorite triplet is intended for visual observing and astronomical imaging. The fluorite element is calcium fluoride, positioned between the two outer elements of the triplet.
Manufacturer model: TEC APO250VT f/8.8 Fluorit · Specifications checked against manufacturer data on 2026-11-04
The TEC 250 mm fluorite refractor provides a 2200 mm focal length at f/8.8. Its air-spaced fluorite triplet is intended for visual observing and astronomical imaging. The fluorite element is calcium fluoride, positioned between the two outer elements of the triplet.
The objective uses a titanium cell. An aluminium tube with internal anti-reflective treatment and baffles helps suppress stray light.
The supplied focusing arrangement is Starlight Instruments Feather Touch FTF3545; rotating; 9:1 fine reduction; 2-inch collet. Camera spacing should follow the drawing for the selected optical configuration.
The manufacturer lists an OTA weight of 50 kg and a retracted/transport length of 2000 mm. Precision adjustable tube rings are included with this model.
TEC manufacturer documentation
Current exact-model TEC page used; old ED or earlier-generation manuals are not substituted. Published metric dimensions are selected where imperial conversions disagree.
| Tube rings | Precision adjustable rings included |
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Data sheet
TEC APO250VT f/8.8 Fluorit The TEC 250 mm fluorite refractor provides a 2200 mm focal length at f/8.8. Its air-spaced fluorite triplet is intended for visual observing and astronomical imaging. The fluorite element is calcium fluoride, positioned between the two outer elements of the triplet.
Manufacturer model: TEC APO250VT f/8.8 Fluorit · Specifications checked against manufacturer data on 2026-11-04
