Cassegrain telescope 154mm f/12 OTA

Cassegrain telescope 154mm f/12 OTA for astrophotography and visual observation is made for lovers of contrast, resolution and compact precision. With an aperture of 154 mm and a focal length of 1848 mm, this classic Cassegrain delivers exceptional sharpness at high magnification - ideal for observing and photographing planets, binary stars and lunar craters.

The closed design keeps the optics clean, stable and collimation-proof. The long focal length makes this telescope particularly suitable for balcony use or permanent setups where you still want to do a lot of zooming with limited freedom of movement.

✓ Classic Cassegrain design: sharpness, contrast and no chromatic aberration
✓ f/12 focal ratio - perfect for lunar and planetary detail
✓ Closed tube - resistant to dust, temperature fluctuations and miscollimation
✓ Lightweight and compact - easier to handle than long refractors
✓ Works great with small CMOS cameras for high-res lucky imaging

This telescope suits observers who prefer serious magnification without bulky tubes. Combine it with a 2x barlow and an ASI camera and you're ready to capture details on Jupiter, Saturn or Mars with impressive precision.

Application

• High magnification for planet and moon photography
• Visual observation of double stars and crater detail
• Ideal for use from balcony or fixed observation site
• Compact alternative to 100-120 mm long-focal length refractors

What you can see with it

✓ Rings of Saturn, cloud structures on Jupiter
✓ Craters, rills and shadow transitions on the moon
✓ Sublime separation of narrow double stars (<1”)
✓ Planetary nebulae with increased contrast
✓ Suitable for lucky imaging of Mars, Venus or the moon

Filters / Properties

• Telescope type: Reflector
• Design: Classic Cassegrain
• Lens diameter: 154 mm
• Focal length: 1848 mm
• Opening ratio: f/12
• Focuser: 2″ rear connector (often without a built-in focuser)
• Use Type: Planetary photography / visual high-res
• Tripod connector: Vixen-style dovetail
• Suitable for beginners: ✗
• Suitable for advanced users: ✓
• Suitable for observatories: ✓ (as a compact specialist)

Technical specifications

• Mirror design: classic Cassegrain
• Main mirror: parabolic
• Secondary mirror: hyperbolic
• Coating: Alu + SiO₂
• Tube length: approx. 500 mm
• Weight: ± 5.5-6.5 kg
• Focuser: optional (often via adapter)
• Includes: dust cover, dovetail
• Collimation-proof closed system
• Mounting: not included