Ronchi Eyepieces This handy new accessory will help you to check the quality of nearly any telescope you come across in the future! While it is true that optical aberrations can be determined by the star test, this method requires steady air and an experienced observer. The Ronchi test is far less demanding: It works within medium air and even beginners will be able to do a correct analysis of an instrument after a short period of learning!
Purchased parts package: The Ronchi eyepiece consists of a metal body with a 1,25" shaft made of black anodized aluminium. It holds a tiny piece of glass with a grating on it. Some gratings from other manufacturers are made of exposed film or laser printouts: Those gratings will show inferior contrast and will be much more difficult to analyse! This Ronchi eyepiece is equipped with a vacuum metalized chrome on glass grating with 10 lines per millimeter. The grating is on the telescope side of the glass and is exactly in the same plane as the outer stop. The Ronchi eyepiece is shipped in a protective case with a short manual in English.
Gerd Neumann's Ronchi Eyepiece employs a chrome-on-glass grating of 5 lines per millimetre, providing a high-contrast display of starlight that enables good analysis of the optical train.
Gerd Neumann's Ronchi Eyepiece employs a chrome-on-glass grating of 10 lines per millimetre, providing a high-contrast display of starlight that enables good analysis of the optical train.
2 Rosemary Lane, Sutton nr. Ely, Cambridgeshire, CB6 2NZ Telephone Hours: Monday to Friday - 10:00am-4:00pm Our showroom is currently closed for visits until further notice. Online orders are despatch as normal.
Primaluce Lab Control UnitsPiersExtension Tubes and PillarsAstrotracMotor Drives and ControllersMount AccessoriesCounterweightsPolarscopesEquatorial Wedges
Lunt H-alpha Solar TelescopesLunt Double Stacked TelescopesLunt H-alpha Solar FiltersLunt Blocking DiagonalsAdapter Plates for Lunt FiltersLunt Ca-K Solar Telescopes and Modules
DayStar Quark Eyepiece FiltersDaystar H-alpha Solar TelescopesDayStar H-alpha ION FiltersDayStar H-alpha Quantum SE and PE SeriesSolar, C+D-ERF FiltersCoronado Solar Telescopes and Filters
White Light FiltersHerschel PrismsAccessories for Solar ObservingLunt and Coronado Solar EyepiecesLunt Dovetail BarsSolarscopes Card ModelsSundials
William Optics EyepiecesVixen Eyepieces and Barlow LensesCelestron Eyepieces & Barlow LensesBaader Eyepieces & Barlow LensesSky-Watcher and OVL Eyepieces and Barlow LensesExplore Scientific EyepiecesMeade Eyepieces and BarlowsOrion USA Eyepieces & Barlow LensesPentax Super-Wide Angle EyepiecesAPM Eyepieces and BarlowsVernonscope Eyepieces and Barlows
Lunt and Coronado Solar EyepiecesZoom EyepiecesSpecialist EyepiecesReticle EyepiecesRonchi Eyepieces
BinoviewersEyepiece and Accessory SetsEyepiece Bags and Cases2-1¼ AdaptersEyepiece ClampsRings and ExtendersEyepiece Accessories
Imaging Filters (Orion USA, Celestron, OVL and Sky-Watcher)Visual Filters (Orion USA, Sky-Watcher, OVL and Celestron)Filter Wheels and SlidersFilter Accessories
