TEC APO110 FL f/5.6 Triplet The TEC 110 mm fluorite refractor provides a 616 mm focal length at f/5.6. Its oil-spaced fluorite triplet is intended for wide-field imaging and visual observing. The fluorite element is calcium fluoride, positioned between the two outer elements of the triplet.
Manufacturer model: TEC APO110 FL f/5.6 Triplet · Specifications checked against manufacturer data on 2026-11-04
The TEC 110 mm fluorite refractor provides a 616 mm focal length at f/5.6. Its oil-spaced fluorite triplet is intended for wide-field imaging and visual observing. The fluorite element is calcium fluoride, positioned between the two outer elements of the triplet.
The objective uses a precision aluminium cell. An aluminium tube with internal anti-reflective treatment and baffles helps suppress stray light. The front lens has multilayer hydrophobic coatings.
The supplied focusing arrangement is TEC dual-speed focuser; fine adjustment on both sides. TEC specifies 160mm from the focuser reference to the focal plane; this telescope backfocus is distinct from the spacing of an optional reducer or flattener.
The manufacturer lists an OTA weight of 5.7kg and a retracted/transport length of 610mm. Accessory-loaded weights, where supplied, are shown separately in the technical table.
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. Page footer incorrectly repeats APO140FL item metadata; the named APO110 description and 110/616 specification table determine the model.
| Added length at full focuser extension | 89 mm |
|---|---|
| Working length mid focus | 775mm |
| Center of gravity from the middle of the focusing knob 2 5 lbs 1 kg load | 292mm |
| Center of gravity from the middle of the focuser telescope retracted | 330mm |
| Weight with rings plate handle finder | 6.8kg |
| Front lens coating | Multilayer hydrophobic coating |
| Optional accessories | Full-frame field flattener; alternative tube rings; carrying cases |
Ficha técnica
TEC APO110 FL f/5.6 Triplet The TEC 110 mm fluorite refractor provides a 616 mm focal length at f/5.6. Its oil-spaced fluorite triplet is intended for wide-field imaging and visual observing. The fluorite element is calcium fluoride, positioned between the two outer elements of the triplet.
Manufacturer model: TEC APO110 FL f/5.6 Triplet · Specifications checked against manufacturer data on 2026-11-04
