William Optics Fluorostar 156 Gray OTA | PixelSkiesAstro
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  • William Optics Fluorostar 156 Gray OTA | PixelSkiesAstro
  • William Optics Fluorostar 156 Gray OTA | PixelSkiesAstro

William Optics Fluorostar 156 Gray OTA

8 590,00 €
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William Optics Fluorostar 156 Gray OTA — 156 mm triplet apochromatic refractor The Fluorostar 156 has a 1217 mm focal length at f/7.8. The current William Optics product specification lists a 43 mm image circle.

Manufacturer model: William Optics Fluorostar 156 Gray OTA · Specifications checked against manufacturer data on 2026-11-03

William Optics Fluorostar 156 Gray OTA — 156 mm triplet apochromatic refractor

The Fluorostar 156 has a 1217 mm focal length at f/7.8. The current William Optics product specification lists a 43 mm image circle.

Optics and imaging

The triplet objective can be paired with the manufacturer's listed optional field flatteners or reducers.

Focusing and adapters

3.7-inch rack-and-pinion focusing provides 99 mm travel. Connections: M92 rotator; M92 to 2-inch RotoLock. Each corrector has its own backfocus and adjustment setting; these are listed separately in the specifications.

Dimensions and handling

Tube length is 1120–1330 mm; OTA weight is 17 kg.

William Optics manufacturer manual

Compatibility notes

Prime-lens telescope: corrector compatibility and spacing are model-specific. Optional correctors are listed, not assumed included; corrector adapters may be required.

Additional specifications

Flat7a spacing65.3 mm backfocus; 10.29 mm adjustment
Flat8 spacing60.8 mm backfocus; 5.8 mm adjustment
Ultra flat156 spacing55 mm backfocus; fixed
85097

Fiche technique

Diamètre (mm)
156
Adaptateurs de caméra
M92 rotator; M92 to 2-inch RotoLock
Format de caméra
Full frame and APS-C
Distance Flat68III
57.6 mm backfocus; 2.6 mm adjustment
Focale (mm)
1217
Rapport F/D
7.8
Course du porte-oculaire (mm)
99
Type de porte-oculaire
3.7-inch rack-and-pinion
Cercle image (mm)
43
Correcteurs indiqués par le fabricant
Flat68III 1.0x; Flat7A 0.8x; Flat8 0.72x; Ultra Flat156 0.79x
Formule optique
Triplet apochromat
Poids du tube optique (kg)
17
Longueur du tube (mm)
1120–1330
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