Baader, however, has used a larger field stop than found in traditional
orthoscopics, and this has increased the AFOV to 50[degrees].
These are the Intuitive Colorimeter (Cerium Visual Technologies), (4) the Chromagen contact lens system (Cantor-Nissel), (5) the Irlen lens system (Irlen Corporation), (6) and the
Orthoscopics system (Ian Jordan).
Along with his team of scientists and engineers at Cambridge-based
Orthoscopics, Ian has developed a special prescribing instrument called Read-Eye which finds the precise colour that gives best performance for each patient.
This new system of vision screening to analyse a person's visual perception has been developed by Ian's team of scientists and engineers at Cambridge-based
Orthoscopics.
By contrast, many amateurs find that simpler designs like Kellners and
Orthoscopics suffice for use on "slow" (high f/ratio) telescopes.
Where atypical responses are given, a clinical assessment is conducted using the
Orthoscopics Read Eye (
Orthoscopics, Cambridge, UK), which is the only instrument available that has the range and capabilities necessary to modify facial feature recognition using colour.
I did most of my observing with a Tele Vue 2-inch Everbrite mirror diagonal and a collection of eyepieces and Barlow lenses that range from today's premium wide-field designs, including Tele Vue Radians and Naglers, to
orthoscopics dating back to the 1960s.
I had good luck with
orthoscopics from University Optics, and with various Plossls, Radians, Panoptics, and Naglers from Tele Vue.
The difference that the work of Michael Gilsenan's
orthoscopics clinic is having on the people of Warrenpoint--and further afield--is highlighted when OT spots one of his patients wearing tinted lens spectacles during the short walk to his practice.
Orthoscopics, Plossls, and economical Kellners really perform nicely in f/15 instruments, particularly for planetary viewing.
The BBC Spotlight Special documentary, which airs on BBC1 on February 16, follows teenager David Nesbitt as he is treated for visual stress by Michael Gilsenan (pictured), who runs the only
orthoscopics clinic in Northern Ireland.
I had used many types of eyepieces for my observing - from wide-field Kellners and Erfles to Plossls and
Orthoscopics.
