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Ships within 48 hours · Estimated delivery Aug 20 - Aug 25
25” or 11” Schmidt-Cassegrain or EdgeHD optical tube
Built-in WiFi and LAN for remote operation
AZ Mount Pro/MiniTower/MiniTower Pro (need Star Knobs with Center Post 8340-PIER)
but the background sky will be very dark as the contrast effect increases with added magnification
25 arcsec RMS (EC)
Bahtinov Focusing Mask Ritchey-Chrétien 25” or 11” Schmidt-Cassegrain orThe new Optical acrylic sheet offers 92% of light transmission that gave you the highest and brightest diffraction Spikes for Focusing about 3 times brighter than traditional bahtinov masks! Includes metal pegs to hang the mask over the front dew shield while focusing. Select the size appropriate for your telescope or lens. Model MM Inches BM DS GR45 75 110 2. 9 4. 3 BM DS GR55 105 148 4. 1 5. 8 BM DS GR90 172 235 6. 7 9. 2 BM DS GR150 243 308 9. 5
US$ 13.19
US$ 34.09
US$ 3570.00
US$ 186.99
US$ 137.49
US$ 27.49
US$ 51.69
US$ 280.50
US$ 62.69
