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the Caldwell Catalog
This 20 mm focal length version of the Explore Scientific 52° Series™ eyepieces is best used when you wish to obtain a medium power (magnification) from your telescope
Frames per Second: 6
Please Note: For best performance we recommend installing the filter with the coated (pinkish) side facing out (FACF-1
This mount has the High-Resolution RA axis Encoder built in
Sky Mentor ND4 Neutral Density Filter - 25% Transmission - 1.25" 32 mm Binoculars the Caldwell CatalogSky Mentor ND4 1. 25" Neutral Density Filter This Neutral Density (ND) filter is suitable for 1. 25" eyepieces & other 1. 25" barreled accessories. Neutral Density filters are preferred as a moon filter due to their neutral color, the ND4 filter can reduce the overall brightness of the moon's surface by 75% (transmission is 25%) so you can see more details and surface features of moon with your telescope, even during its fuller phases. We also offer
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