![Amazon.com : Astromania Bahtinov Mask Focusing Mask for Telescopes - FM180mm for a Tube Outer Diameter (OD) from 195mm-240mm - can be Mounted with The Brass Screws Inside or Outside The drawtube : Amazon.com : Astromania Bahtinov Mask Focusing Mask for Telescopes - FM180mm for a Tube Outer Diameter (OD) from 195mm-240mm - can be Mounted with The Brass Screws Inside or Outside The drawtube :](https://m.media-amazon.com/images/I/61-gAvDWX1L.jpg)
Amazon.com : Astromania Bahtinov Mask Focusing Mask for Telescopes - FM180mm for a Tube Outer Diameter (OD) from 195mm-240mm - can be Mounted with The Brass Screws Inside or Outside The drawtube :
![Farpoint Bahtinov Focus Mask for Telescopes with Dew Shield or Front End Diameter from 6.5" to 9.5" # FP403 Farpoint Bahtinov Focus Mask for Telescopes with Dew Shield or Front End Diameter from 6.5" to 9.5" # FP403](https://agenaastro.com/media/catalog/product/cache/8e03964313a1df06445707bf7088f1a0/b/a/bahtinovmaskvectorized_circular_4.jpg)
Farpoint Bahtinov Focus Mask for Telescopes with Dew Shield or Front End Diameter from 6.5" to 9.5" # FP403
![Amazon.com : SVBONY Bahtinov Mask Focusing Mask Aluminum Alloy Telescope Focusing Mask 60-115mm Caliber Fixed Diameter 65-100mm : Electronics Amazon.com : SVBONY Bahtinov Mask Focusing Mask Aluminum Alloy Telescope Focusing Mask 60-115mm Caliber Fixed Diameter 65-100mm : Electronics](https://m.media-amazon.com/images/I/61HpmxXVz4L.jpg)
Amazon.com : SVBONY Bahtinov Mask Focusing Mask Aluminum Alloy Telescope Focusing Mask 60-115mm Caliber Fixed Diameter 65-100mm : Electronics
![Amazon.com : Astromania Bahtinov Mask Focusing Mask for Telescopes - FM200mm for a Tube Outer Diameter (OD) from 215mm-260mm - can be Mounted with The Brass Screws Inside or Outside The drawtube : Amazon.com : Astromania Bahtinov Mask Focusing Mask for Telescopes - FM200mm for a Tube Outer Diameter (OD) from 215mm-260mm - can be Mounted with The Brass Screws Inside or Outside The drawtube :](https://m.media-amazon.com/images/I/61S6dNO5ptL.jpg)
Amazon.com : Astromania Bahtinov Mask Focusing Mask for Telescopes - FM200mm for a Tube Outer Diameter (OD) from 215mm-260mm - can be Mounted with The Brass Screws Inside or Outside The drawtube :
![Amazon.com : Astromania Bahtinov Mask Focusing Mask for Telescopes - FM60mm for a Tube Outer Diameter (OD) from 65mm-100mm - can be Mounted with The Brass Screws Inside or Outside The drawtube : Amazon.com : Astromania Bahtinov Mask Focusing Mask for Telescopes - FM60mm for a Tube Outer Diameter (OD) from 65mm-100mm - can be Mounted with The Brass Screws Inside or Outside The drawtube :](https://m.media-amazon.com/images/I/61zx5JBn3hL._AC_UF894,1000_QL80_.jpg)
Amazon.com : Astromania Bahtinov Mask Focusing Mask for Telescopes - FM60mm for a Tube Outer Diameter (OD) from 65mm-100mm - can be Mounted with The Brass Screws Inside or Outside The drawtube :
![3D Printable Ø114mm Bahtinov mask (designed for Arena telescope 900mm focal length) by Stuart Bateman 3D Printable Ø114mm Bahtinov mask (designed for Arena telescope 900mm focal length) by Stuart Bateman](https://cdn2.myminifactory.com/assets/object-assets/5f5a4d0a641ed/images/720X720-o114mm-bahtinov-mask.jpg)
3D Printable Ø114mm Bahtinov mask (designed for Arena telescope 900mm focal length) by Stuart Bateman
![Plastic Bahtinov Focusing Mask | Bahtinov Mask Telescope | Dew Shield - Plastic Mask Dew - Aliexpress Plastic Bahtinov Focusing Mask | Bahtinov Mask Telescope | Dew Shield - Plastic Mask Dew - Aliexpress](https://ae01.alicdn.com/kf/HTB16LXkQXXXXXc7XXXXq6xXFXXXy/230061992/HTB16LXkQXXXXXc7XXXXq6xXFXXXy.jpg?size=100090&height=1000&width=1000&hash=fd9ed60f20fae637914672a42d09e88e)
Plastic Bahtinov Focusing Mask | Bahtinov Mask Telescope | Dew Shield - Plastic Mask Dew - Aliexpress
![Farpoint Bahtinov Mask for Refractors or Newtonians with 5.5" to 8.5" Diameter | High Point Scientific Farpoint Bahtinov Mask for Refractors or Newtonians with 5.5" to 8.5" Diameter | High Point Scientific](https://www.highpointscientific.com/media/catalog/product/cache/7dd81aa47688c2f5b60a1205f1684b57/f/a/far-fp402.jpg)