William Optics Diffraction Spikes Bahtinov Focusing Mask - For Dew Shield 172 mm to 235 mm - BM-DS-GR90 vendor-askar TE-14WD and TE-17HD eyepieces

TE-14WD and TE-17HD eyepieces

which will plus into the DC output ports on the Orion Dynamo Pro Lithium battery

If you are considering an Explore Scientific Cradle Assembly as an accessory for your telescope

4" (with 2-inch diagonal) Weight OTA/Std

Carrying Case: Backpack made of nylon

William Optics Diffraction Spikes Bahtinov Focusing Mask - For Dew Shield 172 mm to 235 mm - BM-DS-GR90 vendor-askar TE-14WD and TE-17HD eyepiecesWilliam Optics Diffraction Spikes Bahtinov Focusing Mask For Dew Shield 172 mm to 235 mm William Optics Diffraction Spikes Bahtinov Focusing Mask Fits dew shields with diameters of 172 mm to 235 mm Clear Acrylic Sheet design provides 92% light transmission Gives the Brightest diffraction spikes for focusing This is a William Optics Diffraction Spikes Bahtinov Focusing Mask made from Acrylic material, which is high in light transmission. This design