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61mm（from the base of M54×0
or TRG-1072 (Standard T-Ring Adapter) to connect to camera
4 mm (11 in) Focal Length 2800 mm (110 in) Focal Ratio 10 Focal Length of Eyepiece 1 (mm) 40 mm (1
Introducing the Dewminator Controller from Kendrick Astro
we must first understand the Barlow lens
Astronomik CLS Light Pollution Filter 2" (Pre-owned) M54 Camera Adapters 61mm（from the base of M54×0Description Astronomik CLS filters are suitable under light polluted skies for DSLR Cameras which have not been modified for astronomical use. The Astronomik CLS is a budget filter for visual observation, black & white photography and CCD photographs of nebulae, galaxies and star clusters with astronomical instruments of any size. The Astronomik CLS blocks the light of the spectral lines of mercury and sodium vapor lamps and lets the largest part of
US$ 1950.00
US$ 1650.00
