Question: We are able to see comets through binoculars with the aid of what magnifying devices?

full_context: Document 1: Magnifying glass: A magnifying glass (called a hand lens in laboratory contexts) is a convex lens that is used to produce a magnified image of an object. The lens is usually mounted in a frame with a handle (see image). A magnifying glass can be used to focus light, such as to concentrate the sun's radiation to create a hot spot at the focus for fire starting.
Document 2: C/1881 K1: C/1881 K1 (also called the Great Comet of 1881, Comet Tebbutt, 1881 III, 1881b) is a long-period comet discovered by John Tebbutt on 22 May 1881 at Windsor, New South Wales. It is called a great comet because of its brightness at its last apparition.
Document 3: Binocular (horse): Binocular, foaled on March 17, 2004 in France, is a French thoroughbred retired racehorse, born to sire, Enrique and dam Bleu Ciel Et Blanc. He is owned by J. P. McManus and trained by Nicky Henderson. His primary jockey is Tony McCoy.
Document 4: Great Comet of 1744: The Great Comet of 1744, whose official designation is C/1743 X1, and which is also known as Comet de Chéseaux or Comet Klinkenberg-Chéseaux, was a spectacular comet that was observed during 1743 and 1744. It was discovered independently in late November 1743 by Jan de Munck, in the second week of December by Dirk Klinkenberg, and, four days later, by Jean-Philippe de Chéseaux. It became visible with the naked eye for several months in 1744 and displayed dramatic and unusual effects in the sky. Its absolute magnitude — or intrinsic brightness — of 0.5 was the sixth highest in recorded history. Its apparent magnitude may have reached as high as -7, leading it to be classified among what are called the "Great Comets". This comet is noted especially for developing a 'fan' of six tails after reaching its perihelion.
Document 5: Bioptics (device): Bioptics, also known as a bioptic in the singular, and sometimes more formally termed a bioptic telescope, is a term for a pair of vision-enhancement lenses. They magnify between two and six times, and are used to improve distance vision for those with severely impaired eyesight, especially those with albinism. They can either be a combination of head-mounted eyeglasses (termed the "carrier") and binoculars, or be designed to attach to existing glasses. Some use monoculars which have small telescopes mounted on, in, or behind their regular lenses, so that they can look through either the regular lens or the telescope. Newer designs use smaller lightweight mini telescopes magnifying up to six times, which can be embedded into the spectacle glass and improve aesthetic appearance. The mini telescopic eyeglasses have been shown to be used in the treatment of nystagmus. In some jurisdictions, those with low vision may be permitted to drive automobiles when using Bioptics.
Document 6: Opera glasses: Opera glasses, also known as theater binoculars or Galilean binoculars, are compact, low-power optical magnification devices, usually used at performance events, whose name is derived from traditional use at opera performances. Magnification power below 5× is usually desired in these circumstances in order to minimize image shake and maintain a large enough field of view. A magnification of 3× is normally recommended. The design of many modern opera glasses of the ornamental variety is based on the popular lorgnettes of the 19th century.
Document 7: Obsession Telescopes: Obsession Telescopes is an American telescope manufacturer that specializes in Dobsonian telescopes. Founded in 1989 by David Kriege, the company is based in Lake Mills, Wisconsin. It sells large aperture telescopes throughout the world. An example of a telescope they have produced is a Dobsonian with a 12.5 inch mirror. They have also produced telescopes with computerized positioning. The company is noted as a pioneer in amateur astronomy and is an important and the most major producer of Dobsonian telescopes. Around 1987 the founder, Kriege, went to a star party and experienced a Dobsonian telescope, and then built Obsession 1 at this time astronomy was a hobby (this is before founding OT). The style of telescope was unique early on but over time became more popular. One style of Dobsonian the company developed is an ultra-compact style. The Dobsonians are a big deal to amateur astronomers because they offer a big aperture compared to the cost of the telescope and its mobility. This allows the telescopes to be taken to star parties, where amateur astronomers gather at night to use their scopes together. Telescopes from OT have also been used for astrophotography.
Document 8: Heavens-Above: Heavens-Above is a non-profit website developed and maintained by Chris Peat as "Heavens-Above GmbH". The web site is dedicated to helping people observe and track satellites orbiting the Earth without the need for optical equipment such as binoculars or telescopes. It provides detailed star charts showing the trajectory of the satellites against the background of the stars as seen during a pass. Special attention is paid to the ISS, Iridium flares and other satellites. Space shuttle missions were tracked until the program was retired in July 2011. The website also offers information on currently visible comets, asteroids, planet details, and other miscellaneous information.
Document 9: X/1106 C1: X/1106 C1, also known as the Great Comet of 1106, was a great comet that appeared on 2 February 1106, and was observed across the world from the beginning of February through to mid-March. It was recorded by astronomers in Wales, England, Japan, Korea, China and Europe. It was observed to split into many pieces, forming the Great Comet of 1843, Great Comet of 1882, Comet Pereyra, Comet Ikeya–Seki and C/2011 W3 (Lovejoy), as well as over 3000 small sungrazing comets observed by the SOHO space telescope. It is a member of the Kreutz Group, known as Subfragment I, a split from an earlier large (~150 km) comet that progressively fragmented under influence of the Sun.
Document 10: Binoculars: Binoculars or field glasses are two telescopes mounted side-by-side and aligned to point in the same direction, allowing the viewer to use both eyes (binocular vision) when viewing distant objects. Most are sized to be held using both hands, although sizes vary widely from opera glasses to large pedestal mounted military models.
Document 11: Great Comet of 1819: The Great Comet of 1819, officially designated as C/1819 N1, also known as Comet Tralles, was an easily visible brilliant comet, approaching an apparent magnitude of 1–2, discovered July 1, 1819 by Johann Georg Tralles in Berlin, Germany. It was the first comet analyzed using polarimetry, by François Arago.
Document 12: Fatal Vision (goggles): Fatal Vision goggles are a line of training tools for simulating the effects of alcohol and drug intoxication without actually using these substances.
Document 13: C/2008 T2 (Cardinal): C/2008 T2 (Cardinal), is a non-periodic comet. It was discovered by Rob. D. Cardinal from the University of Calgary. It was visible as a telescopic and binocular object during 2009. It passed near the Perseus star clusters NGC 1528 on March 15 and NGC 1545 on March 17, 2009. It also passed near the Auriga star clusters M38 on April 14, M36 on April 17, and M37 in on April 21, 2009, and passed near Comet Lulin on May 12, 2009, for observers on Earth. It peaked in brightness in June–July 2009 at 8.5-9.
Document 14: Heterophoria: Heterophoria is an eye condition in which the directions that the eyes are pointing at rest position, when "not" performing binocular fusion, are not the same as each other, or, "not straight". There can be esophoria, where the eyes tend to cross inward in the absence of fusion; exophoria, in which they diverge; or hyperphoria, in which one eye points up or down relative to the other. Phorias are known as 'latent squint' because the tendency of the eyes to deviate is kept latent by fusion. A person with two normal eyes has single vision (usually) because of the combined use of the sensory and motor systems. The motor system acts to point both eyes at the target of interest; any offset is detected visually (and the motor system corrects it). Heterophoria only occurs during dissociation of the left eye and right eye, when fusion of the eyes is absent. If you cover one eye (e.g. with your hand) you remove the sensory information about the eye's position in the orbit. Without this, there is no stimulus to binocular fusion, and the eye will move to a position of "rest". The difference between this position, and where it would be were the eye uncovered, is the heterophoria. The opposite of heterophoria, where the eyes are straight when relaxed and not fusing, is called orthophoria.
Document 15: NGC 908: NGC 908 is an unbarred spiral galaxy in the constellation Cetus. It is at a distance of 60 million light years away from Earth. NGC 908 has vigorous star formation and is a starburst galaxy. The galaxy has three-arm spiral pattern, with two arms with peculiar morphology. The central bulge of the galaxy is bright. Cluster of young stars and star forming knots can be seen in the arms. Starburst activity and the peculiar morphology of the galaxy indicated it has a close encounter with another galaxy, although none is visible now. NGC 908 was discovered in 1786 by William Herschel. Two supernovae have been observed in NGC 908, SN 1994ai (Ic type, mag. 17) and SN 2006ce (Ia type, mag. 12.4). It is the main galaxy in the NGC 908 group, which also includes NGC 899, NGC 907 and IC 223.
ground_truth: telescopes