William Optics Fluorostar 156 Apochromatic Triplet Refractor Telescope

The William Optics Fluorostar 156 Apochromatic Triplet Refractor Telescope is a premier choice for astrophotography enthusiasts, offering exceptional image clarity with minimal chromatic aberration and distortion. Designed with precision and crafted from top-tier materials, this refractor telescope rivals the most advanced and costly models on the market.

Exceptional Optical Performance

At its core, the Fluorostar 156 features an apochromatic triplet optical system, utilizing lenses made from FPL-53 glass and lanthanum glass. FPL-53 glass, sourced from the esteemed Japanese company Ohara, is renowned for its high Abbe number of 94.49. Combined with lanthanum glass, this results in superior color correction and reduced chromatic aberrations. Each lens is also treated with a multi-layer anti-reflective coating, ensuring sharp, high-contrast images.

Designed for Full-Frame and APS-C Cameras

The large illumination disc of this refractor makes it ideal for use with full-frame sensor cameras as well as APS-C matrix cameras, ensuring full coverage and excellent image results.

Temperature Compensation and Storage

To handle temperature variations, the Fluorostar refractors come with steel lens mounts. It is important to remove the lens hood and allow moisture to evaporate before storing the telescope in a dry environment at a stable room temperature to avoid corrosion.

Key Features:

• Apochromatic triplet optics using FPL-53 and lanthanum glass with multi-layer anti-reflective coating.
• Precision CNC technology in fastener manufacturing.
• 3.7" rack & pinion focuser compatible with 3" flattener.
• Patented Bahtinov mask design and mount by William Optics.
• Full illumination ring for complete full-frame sensor coverage.
• Losmandy rail 300mm mounting system with adjustable spacing for balanced assembly.
• Triple tube clamps for enhanced stability and comfort.
• Tube clamps include a guider foot that doubles as a handle for easy transport.

Technical Specifications:

• Optical system: ED-APO apochromatic triplet.
• Objective diameter: 156mm.
• Focal length: 1228mm.
• Aperture ratio: f/7.8.
• Resolving power: 0.88".
• Star range: 12.8 mag.
• Maximum useful magnification: 312x.
• Lens materials: FPL-53 glass (Ohara, Japan), lanthanum glass.
• Anti-reflective coating: Full multi-layer coating.
• Full illumination circle diameter: Compatible with full-frame sensors.
• Compatible sensor sizes: APS-C, full frame.
• Compatible photographic systems (via interchangeable T-rings): Canon EF, Nikon F, Sony E, Pentax, Micro 4/3, Fuji FX.
• Focuser: 3.7" rack & pinion.
• Recommended flatteners: WO Flat 68III 3", Flat 7A x0.8 3", Flat 8 x0.72 3".
• Finder foot: Vixen.
• Mounting: Losmandy standard rail.
• Folded tube length: 1120mm.
• Extended tube length: 1330mm.
• Tube weight: 17kg.

Kit Components:

• William Optics Fluorostar 156 APO refractor with R&P focuser.
• Lens hood.
• Bahtinov mask with fastening mechanism.
• Mounting bracket.

Warranty:

This product is backed by a 24-month warranty, ensuring peace of mind with your purchase.