| Brand | Nightfall Astro Products |
|---|---|
| Compatible Brand | sigma |
| Type | Lenses |
| Compatible Model | Sigma 85mm ART F2.0 Lens |
| Telescope Type | Lenses |
| Material | PETG Thermoplastic |
| Country/Region of Manufacture | United States |
Check the listing for details. Nightfall Astro Ring System for Sigma ART 85mm F1.4 Lens: Guidescope Mount. Condition: New. Listed at 89.99 USD. The Nightfall Astro Ring Platform is a fully integrated mounting platform for use with a Sigma ART 85mm F1.4 lens for widefield astrophotography. Nightfall Ring Platforms aredesigned, engineered, and manufactured here in the USA, with components 3D printed using advanced thermoplastics including PETG which are water-resistant and can withstand harsh outdoor conditions in temperatures from below freezing at -15F to +175F. All hardware used is 18-8 stainless steel with thumbscrews being red, anodized aluminum.