Lumicon Deep Sky Filter - 1.25" # LF3010
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Lumicon Deep Sky Filter - 1.25" # LF3010
Useful Filters For Viewing Deep-Sky Objects | Prairie Astronomy Club
Astronomical filter curves
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SVOTek--Lumicon 2.0" Deep Sky Filter
Lumicon Filters Deep Sky filter 2''
SVOTek--Lumicon 2.0" Deep Sky Filter
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Lumicon Deep Sky Filter 48mm Filter (Fits 2" Eyepieces) LF3015
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SPECTROSCOPY Typically, one can observe two distinctive classes of spectra: continuous and discrete. For a continuous spectrum,
