Celestron Interstellar C63.5ED (S81902)

⭐ Features & Benefits 

🔭 1. ED (Extra-low Dispersion) Doublet Lens

• Feature: 63.5mm doublet refractor with one ED element.
• Benefit: Significantly reduces chromatic aberration for sharp, color-accurate images – ideal for both visual observation and astrophotography.

📏 2. Focal Length: 381mm (f/6)

• Feature: Fast focal ratio (f/6).
• Benefit: Offers a wider field of view, excellent for capturing large celestial objects like the Moon, star clusters, and the Milky Way.

🔍 3. 1:10 Dual-Speed Focuser

• Feature: Precision CNC-machined dual-speed focuser (1 coarse + 1 fine knob).
• Benefit: Enables smooth, accurate focusing for both heavy cameras and eyepieces – perfect for high-resolution imaging.

⚙️ 4. Camera-Friendly Design

• Feature: Toothed focusing seat supports accessories like DSLR and astronomy cameras.
• Benefit: Great for beginner to intermediate astrophotographers wanting to shoot deep-sky or lunar objects.

🔄 5. Full-Surface Multilayer Coating

• Feature: Fully multi-coated optics with anti-reflective layers.
• Benefit: Improves light transmission, contrast, and sharpness — resulting in brighter, clearer views.

📌 6. Integrated Dovetail Bar and Mounting Options

• Feature: Built-in Vixen-style dovetail and screw holes for finder scopes and accessories.
• Benefit: Compatible with a wide range of mounts and accessories; makes setup quick and secure.

🪞 7. Retractable Dew Shield

• Feature: Sliding dew shield for compact storage and protection.
• Benefit: Prevents dew buildup during long observation sessions and saves space during transport.

🔧 8. CNC Machined Aluminum Construction

• Feature: High-quality, lightweight, durable body.
• Benefit: Reliable and rugged for field use, while keeping weight low for portability.

🎯 9. Versatile Performance

• Feature: Optimized for visual and imaging use.
• Benefit: A great grab-and-go refractor for both visual stargazing and portable astrophotography.

📦 10. Included Accessories

• Feature: Comes with tube rings, dovetail bar, and screws.
• Benefit: Ready to mount on standard equatorial or alt-azimuth mounts out of the box.

TELESCOPE SPECIFICATION

Specifications – Celestron 63.5ED Astronomical Telescope

Category	Specification
Optical Design	Doublet Refractor with ED Glass
Aperture	63.5 mm
Focal Length	381 mm
Focal Ratio	f/6
Optical Coatings	Fully Multi-Coated
Focuser Type	2" Dual-Speed (1:10 Microfocus, CNC Machined)
Camera Compatibility	DSLR & Astronomy Cameras (Toothed Focus Seat)
Dovetail Type	Vixen-Style Dovetail Bar
Dew Shield	Retractable / Sliding
Tube Material	CNC Machined Aluminum
Tube Rings	Included
Mount Compatibility	Standard EQ and Alt-Az Mounts
Weight (Approx.)	~2.5 kg (with accessories)
Included Accessories	Tube Rings, Dovetail Bar, Mounting Screws
Recommended Use	Visual Observation & Astrophotography

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