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Ships within 48 hours · Estimated delivery Aug 21 - Aug 26
Camera Male thread: M42x0
Na D is a low excitation line emitted when the low chromosphere is heated
Each item has as a 90mm clear opening and allows you to safely view and/or image the sun
turning it into a Hydrogen Alpha Solar Telescope
Optional 8-hour battery pack available
FlatCap Imaging Diffuser Size:FC154 fits 130mm ERF Camera Male thread: M42x0FlatCap is TEMPORARILY applied over the objective to acquire a "Flat Field" reference image which is then applied to live images taken after the FlatCap is removed. Spun Aluminum mounting ring with polymer diffuser for taking flat fields. FlatCap is sold by inside diameter of the mounting cap. Measure the outside diameter of the frontmost component of your telescope or ERF, and then round up to the next larger size. For example, a telescope with a
