![Howie Glatter Holographic Concentric Circle Projection Attachment for Collimator (DISCONTINUED-NO LONGER AVAILABLE) - Camera Concepts & Telescope Solutions Howie Glatter Holographic Concentric Circle Projection Attachment for Collimator (DISCONTINUED-NO LONGER AVAILABLE) - Camera Concepts & Telescope Solutions](https://cdn.shoplightspeed.com/shops/609820/files/4269492/1600x2048x2/howie-glatter-howie-glatter-holographic-concentric.jpg)
Howie Glatter Holographic Concentric Circle Projection Attachment for Collimator (DISCONTINUED-NO LONGER AVAILABLE) - Camera Concepts & Telescope Solutions
![Starlight Instruments Grid Design Holographic Attachment for Howie Glatter Laser Collimators | OPT Telescopes Starlight Instruments Grid Design Holographic Attachment for Howie Glatter Laser Collimators | OPT Telescopes](https://cdn.shopify.com/s/files/1/1594/4815/products/Starlight-Instruments-Barlow-Laser-Collimator-Attachment_ed58da42-54ab-4b5f-b0d5-c1c30cdebfd6.jpg?v=1599858661)
Starlight Instruments Grid Design Holographic Attachment for Howie Glatter Laser Collimators | OPT Telescopes
![Starlight Inst. Howie Glatter Laser Collimator - 1.25 and 2-inch - 532 nm GREEN - Large Threads | OPT Telescopes Starlight Inst. Howie Glatter Laser Collimator - 1.25 and 2-inch - 532 nm GREEN - Large Threads | OPT Telescopes](https://cdn.shopify.com/s/files/1/1594/4815/products/SI-LC2125-532---SINGLEGREENBEAM2-inchand1-25-inchLASERCOLLIMATOR-01.jpg?v=1620849421)