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Astronomy Bandpass Filter, Johnson-Bessel, Blue 25mm Dia.

Astronomy Bandpass Filter, Kron-Cousins, Blue 25mm Dia.

Astronomy Bandpass Filter, Johnson-Bessel, Red 25mm Dia.

Astronomy Bandpass Filter, Kron-Cousins, Red 25mm Dia.

Astronomy Bandpass Filter, Johnson-Bessel, Violet 25mm Dia.

Astronomy Bandpass Filter, Kron-Cousins, Violet 25mm Dia.

25mm Dia x 5mm Thickness Uncoated, Potassium Bromide Window

25mm Dia x 2mm Thickness Uncoated, Potassium Bromide Window

25mm Dia x 4mm Thickness Uncoated, Potassium Bromide Window

25mm Dia. Broadband IR Laser Mirror

25mm Dia. Laser Mirror Substrate

25mm Dia., 0.5mm Thick, Uncoated, Sapphire Window

25mm Dia., 2.3mm Thick, Uncoated, Sapphire Window

25mm Dia., 0.2mm Thick, Uncoated, Sapphire Window

25mm Dia., 1mm Thick, Uncoated, Sapphire Window

25mm Dia. x 2mm Thickness, Uncoated, ZnSe Window

25mm Dia. Schwarz λ/10 Mirror

25mm Dia., 1mm Thick, NIR I Coated λ/4 N-BK7 Window

25mm Dia., 3mm Thick, VIS 0° Coated λ/4 N-BK7 Window

25mm Dia., 4mm Thick, NIR I Coated λ/4 N-BK7 Window

25mm Dia., 2mm Thick, NIR II Coated λ/4 N-BK7 Window

25mm Dia., 3mm Thick, NIR II Coated λ/4 N-BK7 Window

25mm Dia., 1mm Thick, VIS 0° Coated λ/4 N-BK7 Window

25mm Dia., 2mm Thick, NIR I Coated λ/4 N-BK7 Window