Question: Is there a limit for how big a refracting telescope can be?
About the article "Telescope", section "History".

Candidate passages:
The achromatic telescope is a refracting telescope that uses an achromatic lens to correct for chromatic aberration. 
A refracting or refractor telescope is a type of optical telescope that uses a lens as its objective to form an image (also referred to a dioptric telescope).
The refracting telescope design was originally used in spy glasses and astronomical telescopes but is also used for long focus camera lenses.
Although large refracting telescopes were very popular in the second half of the 19th century, for most research purposes the refracting telescope has been superseded by the reflecting telescope which allows larger apertures.
A refractor's magnification is calculated by dividing the focal length of the optical tube by the focal length of the eyepiece. 
The Anna L. Nickel telescope is a 1-meter reflecting telescope located at Lick Observatory in the U.S. state of California.
The smaller dome on the main building at Lick had originally held the secondhand 12-inch Clark refracting telescope, the first telescope to be used at Lick.
In 1979 it was replaced with the Anna L. Nickel telescope, a 1-meter reflecting telescope.
The telescope is named for Anna L. Nickel, a San Francisco native who donated $50,000, a large portion of her estate, to the Observatory.
The Nickel telescope was built entirely by UC Santa Cruz personnel and utilized many spare parts, including a replacement mirror for the Crossley Reflector.
It eased demand for time on the 120-inch C. Donald Shane telescope by taking on research programs that do not require the Shane's greater light-gathering power.
Due to its optical design, it can use the same instruments as the Shane so instruments can be tested on it.  
Yerkes Observatory's refracting telescope was built by the master optician Alvan Clark.
It is the largest refracting telescope used for scientific research.
(A larger demonstration refractor, the Great Paris Exhibition Telescope of 1900, was exhibited at the Paris Universal Exhibition of 1900.)
The telescope was exhibited at the 1893 World's Columbian Exposition in Chicago before being installed in the observatory.
The observatory also houses and reflecting telescopes.
Several smaller telescopes are used for educational purposes. 
 designs.
All refracting telescopes use the same principles.
The combination of an objective lens 1 and some type of eyepiece 2 is used to gather more light than the human eye is able to collect on its own, focus it 5, and present the viewer with a brighter, clearer, and magnified virtual image 6.
The objective in a refracting telescope refracts or bends light.
This refraction causes parallel light rays to converge at a focal point; while those not parallel converge upon a focal plane.
The telescope converts a bundle of parallel rays to make an angle α, with the optical axis to a second parallel bundle with angle β.
The ratio β/α is called the angular magnification.
It equals the ratio between the retinal image sizes obtained with and without the telescope.
Refracting telescopes can come in many different configurations to correct for image orientation and types of aberration.
Because the image was formed by the bending of light, or refraction, these telescopes are called "refracting telescopes" or "refractors".