Eyepiece Accessories and Filters
Celestron's Moon Filter is an economical eyepiece filter for reducing the brightness of the moon and improving contrast, so greater detail can be observed on the lunar surface. The clear aperture is 21mm and the transmission is about 18%. Screws on to the filter thread of any Celestron, or other manufacturer's 1.25 inch eyepiece.
The Optical Vision 1.25 Inch Variable Polarising Filter is a high quality anodised aluminium, optical glass variable polarising filter designed to reduce the amount of light entering your eyepiece. You can progressively dim the view when observing a bright object, such as the Moon or certain planets, to a level according to your needs, whilst increasing contrast, reducing glare and increasing the ...
The Sky-Watcher 1.25 Inch Light Pollution Filter is a contrast-enhancing anodised aluminium, optical glass filter designed to block out the wavelengths of light emitted by mercury-vapour light and other common causes of light pollution, whilst providing higher transmission at critical hydrogen-alpha and hydrogen-beta lines than competing filters. Bright, light-polluted skies appear much darker, ...
As a high-powered stargazing tool, this 0.77 Reducer / Flattener from Sky-Watcher is a must-have for astrophotographers utilising the Esprit-150ED Professional Super APO Triplet Refractor OTA. In short, the field flattener accurately corrects the inherent spherical aberration of curved lenses. Without such a tool, image quality is lessened as the frame appears distorted at the edges of the field of view. When used as a focal reducer, you are afforded a key reduction in the focal ratio of the scope. By doing so, you are left with a wider field of view with shortened exposure time, allowing for more images to be captured in a shorter amount of time without affecting their overall quality.
Cheshire Collimating Eyepiece.Designed to assist with the accurate collimation of a Newtonian reflector telescope.
The Olympus EP-16 is a spare or replacement large rubber eyecup for the Olympus E-M5 Mark II and E-M10 Mark II compact system cameras. As well as offering protection, the EP-16 eyecup adds additional comfort when looking through the viewfinder and helps to block stray light.
This combination focal reducer and field corrector lens makes it possible to have a dual focal ratio instrument, without sacrificing image quality.If offers wide fields of view with any Schmidt-Cassegrain telescope and when used for astrophotography, it reduces exposure time by a factor of 3.
The Sky-Watcher Field Flattener is a superb quality, non-focal reducing field flattener optimised for DSLR imaging on refractor telescopes with focal ratios of between f/5.5 to f6.0. Will also provide much improved results on refractors with focal lengths narrowly outside this optimised f/range. Integral T-Ring adaptor thread. High quality CNC machined body with gloss black anodised finish.
Enhance your viewing of the planets and the moon. Even a 3/4 moon can reflect enough light to strain the eyes, so the use of a moon filter helps to reduce the incoming light and will even improve the contrast. The coloured filters are matched to help improve the viewing of a number of the Planets, and even comets.
The mirrors inside these diagonals have undergone a special high-reflectivity multi-coating process, allowing them to reflect 99% of the precious gathered starlight, providing exceptional brightness and contrast (Standard diagonals typically reflect 90-95% of light).
90 degree Erecting Prism designed to fit 1.25”/31.7mm focusers and eyepieces.Designed to give a more comfortable viewing position, and to correct upside down images.