TS Optics Apochromatic refractor AP 72/432 FPL53 Photoline OTA (56139)

This compact apochromatic refractor is designed for both travel and versatility, making it perfect for observation and astrophotography. It features a high-quality doublet lens made from FPL53 and lanthanum glass, providing excellent optical performance. The air-spaced lens is adjustable, and all optical surfaces are fully multi-coated for maximum contrast.

Design and Features:
The telescope is equipped with a sturdy focuser that can support heavy accessories. Despite its robust mechanics, it is lightweight and compact enough to fit into hand luggage, making it ideal for travel.

Astrophotography:
The telescope offers a large back focus of 135 mm from the 2” focuser socket, allowing for the use of optional field flatteners. These correctors are recommended for sharp focus across the entire image field.

Visual Observation:
The generous working distance makes it possible to use 2” eyepieces with full illumination, providing a wide field of view. This allows for twilight landscape and wildlife observation with maximum image brightness, as well as viewing extended nebulae with narrowband filters. The 72mm lens supports magnifications up to 200x, enabling detailed views of the Moon and planets with impressive contrast.

Versatility:
This apochromatic refractor is suitable for a wide range of observational and photographic applications, including astronomy.

TS Optics is a brand of Teleskop-Service.

Specifications:

• Optics:

  • Type: Refractor

  • Design: Apochromat, doublet lens

  • Coating: Multiple layers

  • Tube material: Aluminium

  • Aperture: 72 mm

  • Focal ratio: f/6

  • Resolving power: 1.60 arcseconds

  • Limiting magnitude: 11.1

  • Light gathering power: 110

  • Maximum useful magnification: 144x

  • Focal length: 432 mm

  • Tube weight: 2.18 kg

  • Dew cap diameter: 88.5 mm

  • Tube diameter: 77 mm

  • Carrying length: 315 mm

  • Tube construction: Full tube

• Focuser:

  • Back focus: 135 mm

  • Type: Rack and pinion

  • Free aperture: 64 mm

  • Telescope side thread: M82

  • Camera side thread: M63

  • Eyepiece connection: 2”

  • Fine focusing: 1:10 gear reduction

  • Load capacity: 5 kg

  • Adjustment range: 73 mm

  • Ring clamp: Yes

  • Rotating: No

  • Motorized: No

• Mount:

  • GoTo control: No

  • Mount type: None (OTA only)

• Included Accessories:

  • Prism rail: Vixen-Style

  • Tube clamps: Yes

  • Transport case: No

  • Dew shield: Yes

  • Deviating optics: No

  • Finder scope: No

  • Eyepiece adaptor: 2" / 1.25"

  • Corrector: Not included

  • Camera tripod thread: Yes

  • Finder base: Vixen/Skywatcher Level

• General:

  • Series: Photoline

  • Suitable for astrophotography: Yes

  • Suitable for nebulae & galaxies: Yes

  • Suitable for nature observation: Yes

  • Suitable for Moon & planets: Yes

  • Recommended for beginners: No

  • Recommended for advanced users: Yes

  • Suitable for observatories: No

This telescope is a reliable and high-performance choice for advanced users who need a portable instrument for both visual observation and astrophotography.