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and the package includes a 10cm dovetail plate with a 1/4" photo thread for easy mounting on a tripod for daytime photography
4 Objective lens Quintuplet air-spaced APO (including two ED glasses) Image circle 44mm Maximum accessory connection (with the focuser fully retreated)： Imaging mode 76mm（from the base of M48×0
FIELD OF APPLICATION Field of application Solar observation OPTICAL SPECIFICATIONS Optical design Apochomatic Refractor Mirror/Lens diam
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Back Focus: 17
EXPLORE SCIENTIFIC H-Beta Filters Premium and the package includes aThe Explore Scientific H beta Filter allows accurate observation of low light deep sky objects High quality Explore Scientific H beta Filter Only allows the emission line of hydrogen to pass at 486 nm Absorbs all other emission lines and almost all artificial light
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