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In good used conditionThe Custom Scientific H-Alpha 656.3/4.5 nanometer filter is a great accessory for imaging emission ne..


In superb condition and full working order, a big pixel comet/exo planet hunter :0 Great with longer focal length scopes ..


These come up for sale very infrequently, the build quality is simply superb and would make an excellent light wait small for..


This RGBC filter set is the standard SBIG set that comes with the CFW8A filter wheel and is intended for use with the ST-7/8/..

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