TAKAHASHI FSQ-106EDX4 ASTROGRAPH
Takahashi
Apochromatic Petzval quadruplet
106 mm
f/5
530 mm
7 kg
TAKAHASHI FSQ-106EDX4 ASTROGRAPH - OTA Only is backordered and will ship as soon as it is back in stock.
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The FSQ-106EDX4 currently has an extensive lead time. Prices may vary. Contact us for more information.
The Takahashi FSQ-106EDX4 is an apochromatic Petzval quadruplet astrograph with uncompromising performance for wide-field deep sky imaging. With two S-FPL53 ED elements, the highly air-spaced quadruplet lens cell provides exceptional correction with an 88mm image circle at prime focus.
The FSQ-106EDX4 has a native focal length of 530mm covering 9.5 degrees of sky and a focal ratio of f/5, making it the ideal instrument for capturing large nebulae.
A selection of three different focal reducers plus a 1.6x extender are available to suit different applications. With the optional F/3 0.6x focal reducer, the telescope is transformed into an incredibly fast high-end astrograph with a focal length of 320mm, while maintaining a 44mm image circle.
The oversized rack and pinion focuser is smooth and accurate and features a 1:7 microfocuser. The included CAA camera angle adjuster allows for precise framing of your target. For serious imaging, the Prima Luce Lab Esatto 4" robotic microfocuser is compatible with the additional PL3600324 adapter. NOTE: Use of the optional focal reducers will likely require a custom adapter for the Esatto. Please contact us for more information.
Note: The OTA ONLY variant does not include tube rings or a dovetail bar. For the FSQ-106EDX4, you can use the PrimaLuceLab 125mm PLUS tube rings in combination with the PrimaLuceLab 240mm Losmandy bar.
Spot diagram of Takahashi FSQ-106EDX4 at prime focus.
Spot diagram of Takahashi FSQ-106EDX4 with RD-QE 0.73x focal reducer.
Spot diagram of Takahashi FSQ-106EDX4 with 645-RD QE0.72x focal reducer.
Spot diagram of Takahashi FSQ-106EDX4 with F/3 0.6x focal reducer.
Spot diagram of Takahashi FSQ-106EDX4 with EX-Q1.6x focal extender.
| Optical design | Modified Petzval quadruplet with ED glass |
|---|---|
| Lens cell |
Highly air-spaced quadruplet with 4 lenses in 4 groups, 2 x S-FPL53 lenses |
| Coatings |
Hard multicoatings |
| Objective diameter |
106 mm |
| Focal length at prime focus |
530 mm |
| Focal ratio at prime focus |
F/5 |
| Backfocus distance at prime focus |
178 mm |
| Dew shield diameter | 145 mm |
| Tube diameter | 125 mm |
| Tube length | 675 mm with dew shield extended, 580 mm with dew shield retracted |
| Tube weight | 7.0 kg |
| SKU | TQE10641 |
| Prime focus focal length | 530 mm |
|---|---|
| Prime focus focal ratio |
F/5 |
| Prime focus backfocus distance |
178 mm |
| RD-QE 0.73x reducer focal length |
385 mm |
| RD-QE 0.73x reducer focal ratio |
F/3.6 |
| RD-QE 0.73x reducer backfocus distance |
72.2 mm |
| RD-QE 0.73x reducer image circle |
44 mm |
| 645RD 0.72x reducer focal length |
380 mm |
| 645RD 0.72x reducer focal ratio |
F/3.6 |
| 645RD 0.72x reducer backfocus distance |
56.2 mm |
| 645RD 0.72x reducer image circle |
60 mm |
| F/3RD 0.6x reducer focal length | 320 mm |
| F/3RD 0.6x reducer focal ratio | F/3 |
| F/3RD 0.6x reducer backfocus distance | 56.2 mm |
| F/3RD 0.6x reducer image circle | 44 mm |
| EX Q1.6x extender focal length | 850 mm |
| EX Q1.6x extender focal ratio | F/8 |
| EX Q1.6x extender backfocus distance | 117.5 mm |
| EX Q1.6x extender image circle | 44 mm |
