Alstar Bahtinov Mask Focusing Mask for Telescopes - FM200mm for a Tube Outer Diameter (OD) from 215mm-260mm

Name: ALSTAR Bahtinov Mask Focusing 200mm
Brand: A ALSTAR
SKU: OTF-US-Oth-AM-B077FMLDMX
Price: 49.99 USD
Availability: InStock

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Alstar Bahtinov Mask Focusing Mask for Telescopes - FM200mm for a Tube Outer Diameter (OD) from 215mm-260mm

Regular Price: US$54.99

Special Price US$49.99

Availability: In stock

Supplier: A ALSTAR

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US$19.99 shipping fees for any order

Key Benefits

🔭 Bahtinov Mask — Takes guesswork out of focusing with mathematical approach to telescope focusing task.
🎯 All Telescopes — Suitable for use on all types of telescopes - reflectors, refractors, Dobsonians, Mak-Cas and SCTs.
💎 Precision Laser Cut — Made from precision laser cut enforced plexiglass which is stiff and long-lasting material.
❄️ Cold Resistant — Will never be brittle in the cold, unlike some masks made from normal plastics.
🛡️ Non-Scratching — Three metal posts have non-scratching silicon sleeves to protect your valued telescope surface.
🎚️ Center Aligned — 3-post mounting keeps the mask centered while fitting a wider range of telescopes with no slippage.