Precision Tool: Illuminated Reticle Eyepiece with red LED illuminated dual-line crosshair reticle precision tool for measuring double star separations planetary lunar dimensions and celestial position angles
Comfortable Eye Relief: This Illuminated Crosshair Eyepiece offers a wider field of view with bright high-contrast images featuring a 40 degree apparent field of view and 11 mm of comfortable eye relief
Premium Multi-Coated Optics: Featuring a multi-coated 4-element Plossl design for superior color correction and image sharpness Illuminated plossl eyepiece also provides excellent light transmission ensuring clear imaging of faint stars
Please be assured that these focusing masks will work excellently for both reflectors and refractors with whatever focal length; All you need to do is to measure your telescope tube size and choose the right size of the mask
They are made from 2 mm thick laser cut abs; Securing screws are capped with soft plastic so they do not damage your telescope; These Bahtinov masks are adjustable to fit a wide range of optical tubes; They have adjustment latitude of about 85 to 120 mm
Alstar 1.25 inch 82 Degree Eyepiece 15mm Ultra-Wide Angle Telescope Lens | Super Wide Angle optical, Waterproof & Fogproof Design, Professional Multi-Coated Optics, Planetary & Deep Sky Observation
SAR 683
Alstar Barlow Lens 2 Inch 2.5X with Multi Coated Broadband Green Film | Compatible for 1.25 Inch and 2 Inch Telescope Eyepiece, Four Fully Multi Coated Lense, 2 Inch filter thread, Compression Ring
SAR 459
Alstar Guide Scope Mount - The Convenient Way to Mount Your Guide Scope
SAR 809
Alstar 2 Inch to 1.25 Inch Telescope Eyepiece Adapter Twist Lock | Anodized Aluminum, for 2 Inch Focusers & Telescope Filters, Premium Thumbscrew & Scratch-Resistant Brass Locking Astronomy
SAR 136
