TS Optics Cassegrain telescope C 154/1848 OTA (60781)

The TS Optics Cassegrain telescope combines the advantages of Newtonian telescopes with the compact design typical of catadioptric systems. Its short tube design ensures stable performance on a mount and makes transportation easy.

Performance and Applications
With its long focal length, this Cassegrain telescope is especially well-suited for photographing the Moon, planets, and small but bright planetary nebulae. It also performs well for visual observation of galaxies and star clusters.

Key Advantages

• Fast cooling and minimal dew issues due to the open tube design

• No mirror shift, as the primary mirror is fixed; focusing is achieved with a high-quality focuser featuring fine reduction

• The focuser provides ample back focus for various astronomical accessories

• Bright, high-contrast images thanks to dielectric coatings and minimal obstruction from the secondary mirror

• Compact construction makes it ideal for travel and easy mounting

TS Optics is a brand of Teleskop-Service.

Specifications

Optics

• Type: Reflector

• Optical design: Cassegrain

• Aperture: 154 mm

• Focal length: 1848 mm

• Aperture ratio: f/12

• Resolving capacity: 0.90 arcseconds

• Limiting magnitude: 12.7

• Light gathering capacity: 480

• Maximum useful magnification: 380x

• Tube weight: 5.4 kg

• Tube diameter: 191 mm

• Tube length: 540 mm

• Stray light baffles: Yes

• Tube construction: Full tube

Reflector Details

• Main mirror: Parabolic, made of quartz

• Secondary mirror: Hyperbolic, made of quartz

• Secondary mirror obstruction: 33%

• Reflectivity: 96%

• Both mirrors are adjustable

Focuser

• Type: Crayford

• Eyepiece connection: 2 inches

• Back focus: 150 mm

• Gear reduction: 1:10 for fine focusing

• Adjustment range: 37 mm

Mount

• Optical tube assembly (OTA) only, no mount included

Included Accessories

• Prism rail (Vixen-style)

• Finder base (Vixen/Skywatcher level)

• Eyepiece adaptor (2" / 1.25")

• Extension tubes

Areas of Application

• Astrophotography: Yes (suitable for Moon and planets)

• Visual observation of Moon and planets: Yes

• Nature observation: No

• Nebulae and galaxies: Yes

• Solar observation: No (only possible with a suitable solar filter)

Recommended For

• Beginners: No

• Advanced users: Yes

• Observatories: No