Optolong L-eXtreme Filter for Deep Sky Imaging dual-band narrowband - 2" 82° SERIES EYEPIECE plastic laminate covered planisphere is

plastic laminate covered planisphere is a quick and convenient way of seeing which constellations are above the horizon at any specified time and day of the year

The vibration Suppression pads fit between the base of the tripod legs and the ground

Item Number DOB1245–00 Secondary Obstruction 24% Primary Mirror Diameter 305mm Focal Length 1525mm Focal Ratio f/5 Primary Mirror Weight 50

Internal diameter: 31

It also allows for precise pointing relative to other stars since your field of view is not limited by the finderscope

Optolong L-eXtreme Filter for Deep Sky Imaging dual-band narrowband - 2" 82° SERIES EYEPIECE plastic laminate covered planisphere is1. L eXtreme Introduction L eXtreme is a two 7nm bandpass filter which can be used with one shot color cameras like DSLR's (digital SLR), and monochrome CCD cameras, it is also more suited for fast systems. The convenience and cost effectiveness of this filter allows amateurs to image a rich emission nebulas, even in bright, light pollution skies. Optolong believes the design of L eXtreme filter would be better choice for fast systems in competitive