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Maybe. Does the filter have anything written on it? Most likely would be UHC or OIII but it may be something else.
If it is not an OIII filter (BTW OIII means "O3", meaning doubly ionised oxygen. It isolated a very narrow band of light emitted by ionised oxygen which is commonly found in the light from Planetary nebula) it will not be able to be used for this blinking procedure.
Malcolm
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