AstroZap Glass Solar Filters Size:41mm-48mm (clear aperture 38mm) 9 Minimum Magnification 27 Maximum

9 Minimum Magnification 27 Maximum Magnification 374 Light Gathering (compared to next size down) 11% General Info Focuser 2" Dual Speed Crayford OTA Length (Retract/Ext

41 arc seconds Resolution (Rayleigh) 0

With its long eye relief of 15mm

Designed for use with 400mm to 660mm focal length refractors with f/5 to f/7

you may even forget that you have an eyepiece between you and the universe

AstroZap Glass Solar Filters Size:41mm-48mm (clear aperture 38mm) 9 Minimum Magnification 27 MaximumDescription The sun is a fascinating, dynamic object. Its surface is surprisingly detailed and changes frequently. The observing hours are more convenient. However, there are a few rules to follow before using your telescope on the sun. The first rule of solar observing is never point your telescope at the sun without a proper filter. The second rule of solar observing is always inspect the filter before placing it on your telescope prior to observing