UltraCat 56 Manual Telescope Precision passbands partially block light

Precision passbands partially block light pollution from sodium lamps while passing OIII emission from nebulae for a more natural image color

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UltraCat 56 Manual Telescope Precision passbands partially block lightThe Ultracat 56 offers an optical upgrade from the venerable RedCat 51, with a superior 5 element advanced Petzval design delivering improved performance out to the corners of full frame sensors. The RMS spot size all the way out to the corners represents a 41% improvement vs the RedCat 51, with tighter RMS across the field for improved performance with high megapixel sensors. Additional features like the built in sensor tilt exterminator and camera