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 Sky-Watcher 1.25 Inch O-III Narrowband Filter narrowband filter is specially designed for the observation of gas and planetary nebulae. It distinguishes different contrasts of the wavelengths of light that pass through, giving ideal conditions for the observation of faint super nova remnants and planetary remnants.
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,
The Baader contrast filter booster will help sharpen up your stellar images, boosting contrast, emphasising lunar, Martian and Jovian surface details and cutting down on visible light pollution. The filter is especially useful in economy refractor telescopes, where it can aid in the correction of colour aberration.
The Baader Neodymium + IR Cut-Off (Moon + Skyglow) filter drastically improves contrast for all reflector telescopes, without loss of brightness. The filter greatly intensifies surface details on Mars, Jupiter and Moon and enhances many deep sky galaxies and nebulae against the background sky. The Neodymium element greatly reduces glare and unwanted street
The Sky-Watcher 2 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
This Baader UHC-S / L-Booster Filter has been produced to aid in deep sky viewing. Extraneous light is reduced and contrast is upped; increasing the visibility of nebulae and stars.
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
This Baader semi-APO filter is for use with achromatic optics and is designed to cut down on the chromatic aberration and fringe aberration of achromat lenses; presenting a clearer, crisper image.
The 1.25" Baader 6 Colour Filter Set comprises three longpass and three genuine bandpass filters, which act similar to a nebula filter, so that only a small portion of the visual spectrum is transmitted to emphasise certain planetary surface detail. All filters have standard 31.7mm eyepiece filter threads. The set consists of the following colours: dark
The 1.25" Baader OIII Filter is specially designed for the observing the night sky and offers high contrast views of gas and planetary nebulae that are emitting light from narrow OIII wavelengths. For many objects, the Baader O-III reveals a level of intricate detail that rivals the best deep sky photographs, the Baader O-III perfectly isolates the two