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The performance is impressive
These optional rings are inserted between the main body and the 1
ultimate in image contrast and zero internal reflections
9 mm Field stop displacement to reference plane -23
Contrast is further enhanced with baffles that mask and deflect unwanted stray light
The Night Sky Planisphere - Southern Hemisphere by David Chandler 1.25" The performance is impressiveThe Night Sky Planisphere for the Southern Hemisphere by David Chandler Astronomy star map Exclusive Australian Distributor Free Shipping Australia wide Generally regarded as the BEST planisphere! This sturdy, 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. Sky and Telescope magazine adopted The David Chandler 'Night Sky' planisphere in
