Starfield Optics ED102mm F/7 APO Doublet Telescope: Superior Performance for Astronomy and Astrophotography

• Advanced Optical Design: Features an FPL53 (Ohara, Japan) and a Lanthanum element for exceptional chromatic correction, rivaling more expensive triplets.
• Versatile Astronomy Use: Ideal for both imaging and visual astronomy, providing color-free images and views at high magnifications.
• Fast Cooling Advantage: Benefits from a shorter cooling time compared to triplet lenses, allowing quicker operation.
• High-Quality Build: Includes a 2.5" two-speed rack and pinion focuser with ball bearings, fully rotatable for ease of use.
• Heavy Load Support: Designed to support heavy camera loads and accessories, thanks to its robust construction and self-centering rotational lock.
• Eyepiece Compatibility: Accommodates both 2" and 1.25" eyepiece accessories, enhancing versatility.
• Durable Construction: Features HD CNC tube rings and a Vixen-style dovetail bar for secure mounting.
• Transport-Friendly Design: Equipped with a retractable dew shield, reducing the total length to 24” for easy transport.
• Optimized for Contrast and Clarity: Internally baffled to prevent stray light, ensuring the high contrast expected from performance refractors.
• Specifications: Offers an aperture of 102 mm, focal length of 714 mm, and a focal ratio of f/7, making it a powerful tool for lunar, solar system observation, and demanding astrophotography applications.

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Specifications

• Optical Design: Apochromatic Doublet.
• Aperture: 102 mm.
• Focal Length: 714 mm.
• Focal Ratio: f/7.
• Optical Elements: Uses FPL53 (Ohara, Japan) and a Lanthanum element for advanced chromatic correction.
• Cooling Time: Faster cooling compared to triplet lenses, allowing for quicker operation.
• Color Correction: Provides images free of chromatic errors; maintains color-free views even at high magnifications.
• Focuser: 2.5" two-speed rack and pinion focuser with ball bearings, fully rotatable.
• Focus Adjustment: Optional motor focusers can be installed.
• Focuser Lock: Self-centering rotational lock without setscrews.
• Load Capacity: Supports heavy camera loads and accessories.
• Eyepiece Compatibility: Accommodates both 2" and 1.25" eyepiece accessories.
• Construction: HD CNC tube rings and Vixen style dovetail bar.
• Dew Shield: Retractable for easy transport, reducing the total length to 26” when retracted.
• Internal Baffling: Internally baffled to prevent stray light and enhance contrast.
• Application: Suitable for lunar, solar system observation, and demanding astrophotography.
• Portability: Designed for ease of transport with a retractable dew shield.