3D printing a telescope is turning into a reality

Scientists at the University of Strathclyde have created the world’s first fully 3D-printed microscope in under three hours and for less than $62 -including the lenses, showing how technology can reduce costs and increase access to scientific tools. The achievement was made possible by using open-source designs, low-cost 3D printers, and custom-made plastic lenses, which were developed over three years to achieve sub-cellular resolution imaging. This project highlights how 3D printing is already used in scientific fields, such as microscopy, making equipment more affordable and accessible, especially for researchers in low-income countries. This raises an interesting question: Could 3D printed telescopes with lenses be next? With astronomy requiring costly and complex equipment, the ability to 3D print telescopes could change space exploration in the same way, allowing scientists to quickly prototype, customize, and build telescopes at a much lower cost. Like this microscope, the use of 3D printing in astronomy could lead to advancements in research and education, making cutting-edge tools more accessible for exploring the universe.

Image credit: The University of Strathclyde 

Scientists at the University of Strathclyde have developed the world’s first fully 3D-printed microscope, which was completed in under three hours and cost less than $62—significantly less than traditional microscopes.

Using a publicly available design from the website OpenFlexure, the researchers created the microscope's frame and clear plastic lenses, which they designed themselves, using low-cost, accessible 3D printers. The microscope was finalized with the addition of a commercially available camera and light, all controlled by a Raspberry Pi computer processor.

To test the microscope's imaging capabilities, the researchers used standard test samples, such as a stained blood smear and a stained, thin section of mouse kidney. The microscope achieved sub-cellular resolution, clearly imaging individual red blood cells and detailed structures in the kidney sample.

Dr. Liam Rooney, a postdoctoral research associate, and Professor Gail McConnell, who created the device in the Strathclyde Institute of Pharmacy and Biomedical Sciences, emphasized that the ability to transform a freely available design into a fully functional optical microscope in under three hours has the potential to democratize access to science. It offers rapid prototyping and custom design of microscopes and optics at a fraction of the cost of traditional devices, benefiting scientists and medics in low-income countries, as well as students learning about science through affordable, accessible equipment.

The microscope uses a single lens with a 2.9x magnification, which is on the lower end of the magnification spectrum. However, its resolving power, which determines how clearly a sample can be seen, is what matters most for diagnostic purposes. Traditional diagnostic microscopes typically cost between $12,478-$18,717.

The critical element of the microscope is the 3D-printed plastic lenses, which Professor McConnell and Dr. Rooney have been refining with colleagues around the world for three years. While the frame used in the device is already employed for diagnostic imaging in low-income settings, the unique combination of this frame with the 3D-printed lenses—each costing only 11 pence to make—makes the microscope more affordable, quicker to build, and easier to access.

One significant challenge the researchers overcame was controlling the shape of the lens and eliminating “stepping artifacts” caused by the layer-by-layer process of 3D printing.

The researchers have submitted their results in a paper to the Journal of Microscopy, currently in pre-print ahead of peer review. Other contributors to the project include Jay Christopher and Ralf Bauer from the Department of Electronic & Electrical Engineering, Rebecca Craig and Brian Patton from the Department of Physics at the University of Strathclyde, and Rebecca McHugh and Andrew Roe from the Department of Bacteriology at the University of Glasgow.

The project received funding from the UKRI Engineering and Physical Sciences Research Council (EPSRC), the Medical Research Council, the Biotechnology and Biological Sciences Research Council (BBSRC), the Royal Society, and the Leverhulme Trust.

Are 3D printed telescope lenses next?

The Future of 3D Printing in Astronomy: 3D printing a telescope is turning into a reality

Image credit: Jay Christopher, Rebecca Craig, Rebecca E. McHugh, Andrew J. Roe, Ralf Bauer, Brian Patton, Gail McConnell, Liam M. Rooney

3D printing has already made significant strides in many scientific fields, including microscopy, and its potential to impact astronomy is an exciting prospect. In the case of the 3D-printed microscope, the process allowed researchers to create an optical tool that not only functioned well but was also incredibly cost-effective, paving the way for more widespread access to microscopy, especially in resource-constrained settings. By using low-cost materials and open-source designs, the project illustrates the power of 3D printing to reduce barriers to cutting-edge scientific tools. With this success in mind, it's natural to wonder if 3D printing could be applied to other areas of science, particularly in fields like astronomy, where equipment can be prohibitively expensive.

3D-printed telescope lenses could become feasible in the future with advancements in materials science and printing precision. The development of high-performance, optically clear materials with consistent refractive indices would address the core issue of light distortion. Additionally, breakthroughs in additive manufacturing, such as nanoscale 3D printing or post-processing techniques like polishing and curing, could help achieve the ultra-smooth surface finishes required for precise light focusing. Combining these advancements with technologies like multi-material printing—allowing for gradient refractive index designs—might revolutionize lens production, making it possible to create functional 3D-printed telescope optics.

Telescopes are essential to astronomy, allowing scientists to explore the farthest reaches of space and observe objects that are billions of light years away. However, telescopes—especially those used for professional research—are often massive, highly complex, and extremely costly. The construction of high-resolution telescopes requires precision engineering, sophisticated materials, and often years of planning. For example, the James Webb Space Telescope, launched in December 2021, cost around $10 billion and took decades to develop. While these large-scale projects are groundbreaking in their ability to explore deep space, the high cost and extensive resources required for such ventures create significant challenges for many institutions and researchers, especially those with limited budgets.

The idea of applying 3D printing to telescope design could revolutionize the way telescopes are made, reducing costs and enabling quicker prototyping and customization. The core benefits of 3D printing—rapid production, low material costs, and the ability to create complex structures with high precision—align well with the needs of telescope manufacturing. Currently, telescopes require extensive machining and specialized components, often made from costly materials like aluminum and glass. These materials are difficult to shape, and the manufacturing process is both time-consuming and expensive. 3D printing, on the other hand, allows for the creation of intricate and lightweight parts with relative ease, using a variety of materials, including plastics, metals, and even ceramics. This could make building telescopes more affordable and accessible, particularly for institutions with smaller budgets or those in developing regions.

Examples of 3D printed telescopes today

Before reading on, just to demonstrate just how far 3D printed telescopes have come, check out these scopes:

A 3D-printed telescope that beats commercial scopes, at half the price

This an 80mm objective diameter, 330mm focal length refractor telescope

3D-printed Newtonian Reflector Telescope

How I Built My 12.5 Inch 3D Printed Dobsonian Telescope

3D printed optics with nanometer scale surface roughness

One of the key aspects of telescope design that could benefit from 3D printing is the development of mirrors. Telescopic mirrors are crucial for gathering light and focusing it onto detectors, but creating high-quality mirrors is a difficult and expensive task. Traditional mirror fabrication involves casting and grinding the glass into a precise shape, a process that requires expensive equipment and a great deal of skill. However, advances in 3D printing technology have enabled the creation of reflective surfaces and mirror-like finishes that could potentially be used in telescope mirrors. By using 3D-printed molds or printing the mirrors themselves directly, it may be possible to produce high-quality mirrors at a fraction of the cost and time.

Additionally, 3D printing could help streamline the design and production of telescope components such as the housing, mounts, and support structures. These parts are essential for ensuring that the telescope remains stable and accurately aligned during observation. Traditional manufacturing methods for these components often involve complex assembly and machining, which can add considerable cost and time to the telescope-building process. 3D printing, however, can produce these parts in a single step, reducing the need for multiple components and assembly. This could make the entire telescope assembly process faster and more efficient, allowing for quicker deployment and easier repairs.

Customization is another area where 3D printing could have a major impact on astronomy. Different types of telescopes require different configurations of components, depending on their purpose and the specific scientific objectives of the researchers using them. For example, some telescopes are designed for visible light observation, while others are optimized for infrared or radio wave detection. The ability to quickly and cheaply customize parts for specific uses could lead to more specialized telescopes that are tailored to the needs of particular research projects. This level of customization, which might have previously been cost-prohibitive, would enable astronomers to build telescopes that are better suited for particular missions or observations.

Moreover, the ability to print telescopes on-site could be a game-changer for space exploration. Launching telescopes into space involves significant logistical challenges, not only in terms of the technology involved but also in the costs associated with sending equipment to orbit. If a telescope could be 3D printed in space, much of the cost and complexity of building and launching it would be reduced. NASA has already begun experimenting with 3D printing in space, using additive manufacturing to produce tools and parts aboard the International Space Station (ISS). By leveraging 3D printing for telescope components, it may be possible to build and even repair telescopes in orbit, reducing the need to send new instruments from Earth. This could allow for more flexible space missions and the potential for longer-term space-based telescopic observation.

Another exciting possibility is the democratization of astronomy through 3D printing. Just as 3D-printed microscopes offer accessible and affordable tools for researchers and students around the world, 3D-printed telescopes could similarly enable people from diverse backgrounds to explore the universe. By reducing the cost of telescope construction and making it easier to customize designs, 3D printing could make astronomy more accessible to amateur astronomers, educators, and students, allowing them to build and use their own telescopes. This could spark new interest in space exploration, encourage educational outreach, and create new opportunities for collaboration between professionals and enthusiasts alike.

Of course, there are challenges to be addressed before 3D printing becomes a standard method for building telescopes. While the technology has made great advances, there are still issues to overcome, particularly in terms of material properties and long-term durability. For instance, while plastic and metal can be used in 3D printing, these materials may not have the same performance characteristics as the materials traditionally used in high-end telescopes. Additionally, the precision required for some telescope components, such as mirrors, may require further refinement of 3D printing techniques to meet the stringent demands of astronomy. However, with continued research and development, these challenges are likely to be overcome, just as they were in other fields where 3D printing has already made an impact.

The potential of 3D printing to transform astronomy and telescope construction is immense. Just as it has revolutionized fields like microscopy, 3D printing could make telescopes more affordable, customizable, and accessible, ultimately enabling more people to explore the cosmos. Whether it’s for rapid prototyping, building telescopes in space, or providing educational tools, the role of 3D printing in astronomy is poised to grow, changing the way we look at the universe and advancing scientific research. The success of 3D-printed microscopes suggests that, in the near future, the sky may be the limit for 3D-printed telescopes.