Celestron SKRYIS IR-BLOCK Filter
Colour CCD cameras such as the Skyris colour planetary cameras are very sensitive across the visual spectrum, as well as in infrared.
OVL Variable Polarising Filters£26.00 - £38.00
Progressively dims the view when observing the Moon or bright planets whilst increasing contrast, reducing glare and increasing the amount of detail to study.
OVL Light Pollution Filters£22.00 - £32.00
These contrast-enhancing filters are designed to block out the wavelengths of light emitted by mercury-vapour light and other common causes of light pollution.
OVL O-III Narrowband Filters£48.00 - £75.00
The O-III narrowband filter is specially designed for the observation of gas and planetary nebulae.
OVL UV/IR CUTOFF FILTER (1.25")
This UV/IR cut filter blocks UV and IR rays to maintain the colour temperature you want, eliminating false colour fringes around bright stars.
OVL H-Beta Filters£29.99 - £39.99
This high performance CCD filter transmits only the Hydogen Beta emission line, and therefore is useful for greatly increasing the contrast of objects that glow in the corresponding region of the spectrum, for example the Horsehead, Cocoon and California nebulae.
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