Celestron 102/660mm EQ-3 Refractor Telescope – Product Description

The Celestron 102/660mm EQ-3 Refractor Telescope is a powerful and well-balanced refractor telescope designed for beginners as well as serious hobby astronomers who want high-quality optics with a stable equatorial mounting. Featuring a 102mm multi-coated doublet objective lens and a fast 660mm focal length, this telescope delivers bright, sharp, and high-contrast views of the Moon, planets, and deep-sky objects such as star clusters and nebulae.

Built for stability and smooth tracking, it comes equipped with a heavy-duty EQ-3 German Equatorial Mount, supported by a height-adjustable stainless steel tripod for excellent vibration control. The mount includes large flexible slow-motion control knobs on both axes, allowing precise manual tracking of celestial objects as they move across the night sky.

The telescope is fitted with a 2-inch focuser, along with a 2" to 1.25" step-down adapter, providing compatibility with a wide range of astronomical eyepieces and accessories. Included in the package is a 25mm Plössl eyepiece for wide-field viewing and an erect image 1.25" prism diagonal, making it suitable for both astronomical and terrestrial viewing.

For easy targeting, the telescope includes a Red Dot Finder, helping users locate objects quickly. It also comes with a free mobile phone holder, and the tube clamps feature an upward-facing mounting screw that allows users to attach the holder securely—perfect for using astronomy apps such as AstroHopper for guided sky navigation.

The complete kit includes a stainless steel counterweight shaft, a 1.9 kg counterweight, tube clamps with a 5.5-inch dovetail plate, and a convenient accessories tray to keep your eyepieces and tools organized during observation sessions.

With its strong optics, sturdy EQ mount, and excellent included accessories, the Celestron 102/660 EQ-3 is an ideal telescope for anyone looking to explore the night sky with clarity, stability, and ease.

Included Items (Box Contents)

• Celestron 102/660mm Refractor Optical Tube Assembly (OTA)
• 102mm Multi-Coated Doublet Objective Lens
• Heavy Duty EQ-3 German Equatorial Mount
• Height Adjustable Stainless Steel Tripod
• 2" Focuser
• 2" to 1.25" Step-Down Adapter
• Stainless Steel Counterweight Shaft
• 1.9 kg Counterweight
• 2 Large Flexible Slow Motion Control Knobs
• Tube Clamps
• 5.5 inch Dovetail Plate
• 25mm Plössl Eyepiece (1.25")
• 1.25" Erect Image Prism Diagonal
• Red Dot Finder
• Mobile Cellphone Holder (Free)
• Accessories Tray
• 2 Allen Keys

TELESCOPE SPECIFICATION

Specification	Details

Optical Design

Refractor Telescope

Objective Lens Type

Doublet Lens

Lens Coating

Multi-Coated

Aperture

102 mm

Focal Length

660 mm

Focal Ratio

f/6.5

Tube Length	27 inches
Focuser Type	2" Focuser

Eyepiece Compatibility

2" (with 1.25" Step-Down Adapter Included)

Finder Scope

Red Dot Finder

Included Eyepiece

25mm Plössl (1.25")

Diagonal Included

1.25" Erect Image Prism Diagonal

Mount Type

EQ-3 German Equatorial Mount

Mount Controls

Flexible Slow Motion Control Knobs (2 pcs)

Tripod Type

Stainless Steel Tripod

Tripod Height

Height Adjustable

Counterweight Shaft

Stainless Steel

Counterweight Included

1.9 kg

Tube Clamps

Included

Dovetail Plate

5.5 inch

Accessories Tray

Included

Mobile Phone Holder

Included (Free)

OTA Weight

2.6 kg

EQ Mount Weight

2 kg

Tripod Weight

2 kg

Dew Shield Outer Diameter

115 mm

Recommended Solar Filter Cap Size

120 mm

Solar Filter Included

No

Allen Keys

Included (2 pcs)

Suggested Accessories

120mm Cap Dia Solar Filter
₹ 1920

40mm Plossl Eyepiece 1.25"
₹ 3000

CELESTRON 2x OMNI Barlow 1.25"
₹ 2100

Mirror Star Diagonal 90°
₹ 1200