Omegon Telescope Pro Astrograph V2 154/600 OTA (87873)

Omegon Telescope Pro Astrograph V2 154/600 OTA (87873)

The Omegon f/4 Astrograph is designed for impressive and efficient astrophotography. Thanks to its fast f/4 aperture ratio, it captures a large amount of light in a short time, allowing significantly reduced exposure times compared to conventional telescopes. This makes it ideal for photographing faint galaxies, hydrogen nebulae, and detailed deep-sky structures. The Astrograph sets a high standard for ambitious astrophotographers.

Key Advantages at a Glance

• Ultra-fast f/4 aperture ratio for short exposure times

• Compact tube length, suitable for medium-sized mounts

• Large illuminated image field of approximately 24 mm

• Parabolic primary mirror with 94% reflectivity for bright, high-contrast images

• Large secondary mirror for excellent DSLR illumination

• Stable 2" focuser with 1:10 fine reduction and 1.25" adapter

High-Performance f/4 Optics with 94% Reflectivity

While suitable for visual observation, this astrograph truly excels in astrophotography. Its fast f/4 aperture ratio makes it one of the quickest Newtonian systems available, enabling shorter exposures and improved imaging efficiency.

Both the secondary mirror and the parabolic BK7 primary mirror feature a 94% reflective coating, delivering noticeably brighter and higher-contrast images compared to standard mirrors with approximately 88% reflectivity. The enhanced aluminum and silicon dioxide coating ensures excellent light transmission and durability.

Optimized Illumination with a Large Secondary Mirror

The generously sized 63 mm secondary mirror ensures even illumination across a wide field of view. When attaching a DSLR or modern CCD camera, shadowing is minimized, resulting in well-illuminated images. The design also supports comfortable use with 2" wide-field eyepieces.

Compact Design for Easier Astrophotography

The short tube length and 600 mm focal length make this astrograph approximately 20% shorter than comparable f/5 systems. This compact design allows use on medium-sized mounts, reducing both cost and setup complexity.

The shorter focal length is ideal for imaging extended deep-sky objects and is more forgiving of minor tracking errors compared to longer focal length systems. This makes achieving high-quality astrophotographs easier, even with moderate experience.

Precision Focusing with Dual-Speed Focuser

The Omegon V2 2" Newtonian dual-speed focuser features linear bearings and a helical gear drive for precise adjustments. The 1:10 fine-focus reduction allows extremely accurate focusing, essential for sharp astrophotography results.

Scope of Delivery

• 6" Astrograph OTA with 63 mm secondary mirror

• Dummy mirror mark for collimation adjustment

• Omegon V2 2" Newton dual-speed focuser with linear bearings

• Tube clamps

• 22 cm Vixen-style prism rail

• Tube length: 580 mm

• Tube outer diameter: 176 mm

Technical Specifications

Optics
Type: Reflector
Design: Newtonian
Aperture: 154 mm
Focal length: 600 mm
Focal ratio: f/4
Resolving capacity: 0.77
Limiting magnitude: 12.7
Light gathering power: 460x
Maximum useful magnification: 300x
Primary mirror: Parabolic
Primary mirror material: BK7
Reflectivity: 94%
Secondary mirror obstruction: 42%
Secondary mirror diameter: 63 mm
Coating: Aluminum and silicon dioxide
Tube material: Steel
Tube length: 580 mm
Tube diameter: 176 mm
Tube weight: 5.75 kg
Tube construction: Full tube
Central mirror ventilation: No

Focuser
Design: Linear bearing focuser
Eyepiece connection: 2 inch
Fine focusing reduction: 1:10
Backfocus: 60 mm

Mount
Design: OTA (optical tube assembly only)
Mounting type: No mount included

Included Accessories
Tube clamps: Yes
Eyepiece adapters: 1.25" and 2"
Prism rail: Vixen style

General Information
Series: Pro Astrograph
Total weight: 5.7 kg

Recommended Applications
Astrophotography: Yes
Moon and planets: Yes
Nebulae and galaxies: Yes
Nature observation: No
Solar observation: Not recommended

Recommended For
Beginners: No
Advanced users: Yes