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RARE H-alpha Coronagraph from Baader, $745

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RARE Baader Planetarium Hydrogen-alpha Coronagraph Prominence Viewer. This viewer has a 9 angstrom H-alpha bandwidth and will provide you the brightest solar prominence views you have every seen!

This coronagraph does not require any energy rejection pre-filter for telescopes of 4" or less. This product has metal cones that occults the sun except for the very edges (so it works very much as if you were viewing an annular eclipse; with inline filtering for H-alpha prominence viewing). The faintest prominence details will show up brightly with this product.

This is a complete package which is designed and optimize for refractors of 910mm, 1000mm, and 1040mm focal lengths. Original case, all instructions, and certified filter test is included. Also includes 1/4" viewing diagonal, and this package includes a T-thread adapter so you can image the sun by connecting your camera or CCD.

This unit is still being sold by Baader Planetarium for $2100 USD. My price is $745.