Accessories for Soviet MTO-500 Mirror Lens Part 2

This is the second part of my accessory set for the classic Soviet mirror lens MTO-500 3M-5A. These parts are designed for astrophotography and solar observation setups and are fully compatible with the accessories from Part 1. First part of the accessory set: https://www.thingiverse.com/thing:7327482 All parts share the same outer diameter as the original MTO-500 hood, so they work together as a modular system. Included Models 150 mm Dew Shield Extended dew shield for improved contrast and stray light suppression. Mounts using the M77×0.75 thread The longer shield helps reduce dew formation and improves contrast when imaging the Moon or bright objects. Bahtinov Mask A focusing mask designed specifically for the MTO-500 front diameter. Allows precise focus for astrophotography Solar Filter Holder Holder designed for my solar filter frame: https://www.thingiverse.com/thing:7281720 Secure threaded mounting Mounts using the M77×0.75 thread Designed for reliable and stable attachment Safety Warning – Solar Observation ⚠️ Never observe or photograph the Sun without a proper solar filter. Looking at the Sun through a telescope or telephoto lens without a certified solar filter can cause permanent eye damage and may destroy your camera sensor instantly. Always make sure that: the solar filter is securely installed the filter material is undamaged the filter fully covers the front aperture Use only proper solar filter materials designed for safe solar observation. Recommended settings: Layer height: 0.28 mm Infill: 15–25% Material: PLA / PETG PETG is recommended for outdoor use because it handles temperature changes better. This project is part of a growing collection of accessories for vintage optics and astrophotography gear. More accessories for the MTO-500 are available in Part 1 of this project.