Artesky Tri-Bahtinov 180 mm mask (Artesky, SKU: TRI-BAHTINOV-180) helps set focus for astrophotography. Placed in front of the objective or tube opening, it creates a diffraction pattern around a bright star; the pattern’s symmetry helps identify the correct focuser position.
Key features
• item: Tri-Bahtinov pattern for evaluating focus • reference pattern viewed on a camera or imaging display • attachment using three screws
Included items
• item: Tri-Bahtinov mask • three mounting screws
Technical specifications
• type: Tri-Bahtinov diffraction mask • tube-diameter variant: 180 mm • selection: according to the outside tube diameter at the mounting position
The clear diffraction pattern helps set focus before starting an imaging sequence.
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