Question: We are able to see comets through binoculars with the aid of what magnifying devices?
Context: 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. 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. 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. 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. The 2008 WNBA season was the 12th and final season for the Houston Comets.  The Comets were not able to return to the postseason for the first time since 2006.  By season's end, Comets owner Hilton Koch put the franchise up for sale less than two years after he bought it. Donald Edward Machholz, born October 7, 1952 in Portsmouth, Virginia, is an American amateur astronomer who is the most successful living visual comet discoverer in the world.  Credited with the discovery of 11 comets, that include the periodic comets 96P/Machholz, 141P/Machholz, the non-periodic C/2004 Q2 (Machholz) that were visible with binoculars in the northern sky in 2004 and 2005, and most recently, C/2010 F4 (Machholz).  In 1985, comet Machholz 1985-e, was discovered using a homemade cardboard telescope with a wide aperture, 10 inches across, that gave it a broader field of view than most commercial telescopes.  Amateur astronomer Machholz utilizes a variety of methods in his comet discoveries, in 1986 using 29×130 binoculars he discovered 96P/Machholz. Amateur astronomy is a hobby whose participants enjoy observing or imaging celestial objects in the sky using the unaided eye, binoculars, or telescopes. Even though scientific research may not be their primary goal, some amateur astronomers make contributions to the science of astronomy, such as by monitoring variable stars, double stars or occultations of stars by the Moon or asteroids, or by discovering transient objects, such as comets, galactic novae or supernovae in other galaxies. 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. 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. The following list is of comets with very long orbital periods, defined as between 200 and 1000 years.  These comets come from the Kuiper belt and scattered disk, beyond the orbit of Pluto.  with possible origins in the Oort cloud for many.  For comets with an orbital period of over 1000 years, see the List of near-parabolic comets.
Answer: telescopes