ToupTek HOPE D60 – Full-Frame Planar APO Refractor (f/4.66)

The ToupTek HOPE D60 is designed as an excellent telescope for astrophotography while also being ideal for beginners who want to explore the universe with ease. Unlike bulky reflecting telescopes, this compact APO refractor combines portability with a professional five-element optical system, minimizing chromatic aberration and delivering diffraction-limited clarity.

With its fast f/4.66 focal ratio and built-in field flattener, the HOPE D60 is a true astrograph, providing wide, flat images without the need for additional accessories. A dual-speed focuser and versatile threaded connections make setup easy for newcomers, while giving advanced users precise control for capturing galaxies, nebulae, and star fields.

The HOPE D60 combines beginner-friendly simplicity with professional performance, making it a telescope that grows with you throughout your astronomy journey.

1. Optical Design

• A 5-element planar apochromatic (PAPO) lens design: Combination of SD glass and lanthanum glass for near-zero chromatic aberration and accurate colour.
• Native flat-field: Achieves full-frame field correction with no vignetting, no distortion, and round pinpoint sharp stars.
• f/4.66 fast focal ratio: High light-gathering efficiency for capturing wide-field deep-sky objects, revealing detail even with short exposures.

How the ToupTek HOPE 60D Compares

Feature	ToupTek HOPE 60D	Askar FRA300 Pro	RedCat 61
Aperture	60mm	60mm	61mm
Focal Length	280mm	300mm	335mm
F-Ratio	f/4.66	f/5	f/5.5
Optical Design	5-element Planar APO	5-element Petzval	4-element Petzval
Field Flattener	Built-in	Built-in	Built-in
Image Circle	Full Frame (44mm)	Full Frame	APS-C recommended
Portability	Very compact (255mm)	Compact	Compact

2. Precise Mechanical Design

3. Compact and Robust OTA

4. Highly Compatible Interfaces

5. Compatible with Electric Focusers of Multiple Brands

6. Versatile Usage

• Suitable for deep-sky, lunar and solar photography
• No limits on astronomical exploration and daily photography.

The HOPE D60 astronomical telescope achieves a central RMS spot size <1.1 µm and the full-frame edge RMS <2.3 µm, delivering exceptionally fine, concentrated star points. Multi-wavelength focus remains consistent with near-zero chromatic aberration, ensuring sharp, accurate imaging across the field of view.

A spot diagram illustrates how light from a star is distributed on the telescope’s focal plane, visually confirming stellar precision.

MTF curve shows consistently high resolution and minimal S/T variation across the full frame.

HOPE D60 is a high-resolution telescope for viewing planets and galaxies, delivering accurate celestial detail reproduction with exceptional uniformity — achieving MTF >0.95 at 10 LP/mm and >0.85 at 30 LP/mm, with minimal Sagittal/Tangential variation across the frame.

Exceptional Chromatic Aberration Control.

The axial aberration curve is flat, with multi-wavelength light converging on the same plane. This ensures minimal spherical and chromatic aberration, delivering sharp, colour-accurate imaging across the entire field of view.

Even Brightness, No Edge Vignetting

The HOPE D60 refractor telescope maintains >90% relative illumination at the 44mm full-frame edge, meaning brightness difference between centre and edge is <10%. The curve decays smoothly, ensuring uniform brightness with no vignetting.

Relative illumination measures brightness uniformity across the image plane, showing how light falls from the centre (0mm) to the full-frame edge (22mm).

The HOPE D60 refractor telescope delivers full-frame coverage (44mm image circle) with sharp stars across the entire field. Its built-in field flattener simplifies imaging — no extra back-focus calculation or additional flattener required. Optimal focus is achieved at 55mm connection distance.

Note: Due to precise focal plane and working distance engineering, use of a star diagonal for visual observation is not recommended.

HOPE D60 telescope comes standard with an M48 adapter, compatible with various cameras and astrophotography accessories. An optional M54 adapter supports larger format imaging.