Skywatcher 150/750 Newtonian Dew Shield

thingiverse

A modified version of the amazing dew shield created by Papuch76 for slightly thinner (5mm) materials and larger (25mm) thumbscrews. There are two main changes: 1. The slots which are used to mount the dew shield to the telescope are much larger as I replaced the bolts used to hold the spider in place (https://www.aliexpress.com/item/1005003596895331.html - 1/5pc M3 M4 M5 M6 M8 M10 GB835 304 A2-70 Stainless Steel Knurl Flat Head Hand Tighten Curtain Wall Glass Thumb Screw Bolt DIN653 - 2pcs M8x10mm). They are sized for a 25mm thumbscrew as opposed to the 15mm ones which come standard with the scope. 2. The slot for the foam surround is 5mm as opposed to 6mm to fit the foam which I purchased (https://www.aliexpress.com/item/1005005567697486.html - NEW 1pcs Thickness 1/2/3/5/10mm Eva Foam Sheets Sound-Absorbing Noise Spone Foam Craft Eva Sheets Handmade Model Making Material - 5mm 35x100cm). Putting everything together is simple as can be - cut the foam down to size (250mm x 605mm), slot either end into the I beam, then seal each end with the top and bottom rings. Everything should fit together nice and tight, no need for glue. Optionally you can flock the inside of the dew shield, I went with adhesive felt sheets (https://www.amazon.com.au/Caydo-Adhesive-Sheets-Velvet-Jewelry/dp/B09DJQCLWB).