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and astronomical observing in the darkness
The filter comes in a protective plastic storage box
500X slew rate
and aluminium body covered black anodize
The inside surface of this tube is black-matted helps to enhance imaging contrast and absorb any disturbing light
GSO 2" ED 2x Barlow Lens and astronomical observing in the2x fully apochromatic Barlow for any 2" eyepieces and include a 1. 25" adapter for 1. 25" eyepieces Precision machined aluminum barrel with high quality black anodized finish and knurled ring to aid in handling The 2x Barlow apply 2" huge ED (Extra Low Dispersion) lens to eliminate chromatic aberration, and delivers sharp imaging in 2x magnification. Its inner a brass compression rings on tube and adapter are designed to avoid any scratch when
US$ 155.00
US$ 45.00