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ATTENTION: I will be unable to ship orders from 6/18/2022 - 7/4/2022. Orders placed during this time will be shipped starting 7/5/2022 in the order they were received. Thanks for your patience and your business!

TriBahtinov Mask for Collimation and Focus

A TriBahtinov mask operates under the same principle as the Bahtinov mask for focusing and adds the ability to collimate scopes with collimatable optics.  
The design is based on Cytan's idea, documented on his Github site here, and the sketch was made using Satoru Takagi's Mask Generator.
The mask has a raised center for an easy grip and comes in three sections that snap fit together and can be taken apart for easier storage (C5 is one piece, 14" and larger are 6 sections).  


FREE SHIPPING (USA) (1st Class)

Priority shipping available also. International shipping calculated at checkout. Please see the shipping tab for more info.

Printed in durable, temperature tolerant PETG filament.

Instructions for use:

Please see Cytan's wiki page.  

Tribahtinov-C5 - $23
Celestron 5" SCTs
TriBahtinov-M8 - $24
Meade 8" LX200/GPS/90/GPS/2080
TriBahtinov-C8-NF - $24
Celestron 8" SCT (non-Fastar/Hyperstar)
TriBahtinov-M8F6.3 - $24
Meade 8" Model 2080 (F6.3)
TriBahtinov-CClassic8 -$24
Celestron "Classic8" (specific scope only)
TriBahtinov-M8LXACF - $24
Meade 8" LX90/LX200ACF
TriBahtinov-C9.25-NF - $25
Celestron C9.25" SCT (non-Fastar/Hyperstar)
TriBahtinov-M10
Meade 10" LX200/GPS/90/GPS/50/2120
TriBahtinov-C14-NF - $42
Celestron 14" SCT (non-Fastar/Hyperstar)
TriBahtinov-M10LXF6.3 - $26
Meade 10" LX200 F6.3
TriBahtinov-C6 - $26
Celestron 6" SCT (Fastar, Hyperstar, EdgeHD)
TriBahtinov-M10LXACF - $26
Meade 10" LX200ACF/90ACF
TriBahtinov-C8 - $27
Celestron 8" SCT (Fastar, Hyperstar, EdgeHD)
TriBahtinov-M10LX600-850 - $26
Meade 10" LX600/850ACF
TriBahtinov-C9.25 - $28
Celestron 9.25" SCT (Fastar, Hyperstar, EdgeHD)
TriBahtinov-M10LXEMC - $26
Meade 10" LX200 EMC
TriBahtinov-C11 - $34
Celestron 11" SCT (Fastar, Hyperstar, EdgeHD)
TriBahtinov-M12LX200 - $36
Meade 12" LX200/LX200GPS
TriBahtinov-C14 - $45
Celestron 14" SCT (Fastar, Hyperstar, EdgeHD)
TriBahtinov-M12LX850 - $36
Meade 12" LX850
TriBahtinov-RASA8 - $24
Celestron RASA8 (98mm hole dia.)
TriBahtinov-M14LX200 - $42
Meade 14" LX200/LX200GPS
TriBahtinov-RASA11 - $30
Celestron RASA8 (115mm hole dia.)
TriBahtinov-M14LXACF - $42
Meade 14" LX200ACF
TriBahtinov-GSO6RC - $24
GSO 6" RC (Astro-Tech, TPO, iOptron, Orion, etc.)
TriBahtinov-M16LX200 - $47
Meade 16" LX200/LX200GPS
TriBahtinov-GSO8RC - $24
GSO 8" RC (Astro-Tech, TPO, iOptron, Orion, etc.)
TriBahtinov-M16LXACF - $47
Meade 16" LX200ACF
TriBahtinov-GSO10RC - $26
GSO 10" Closed Tube RC
TriBahtinov-MSN10 - $26
Meade 10" Schmidt-Newtonian
TriBahtinov-GSO10RCT - $30
GSO 10" Truss Tube RC
TriBahtinov-SW-MN190 - $26
Skywatcher Maksutov-Newtonian 190mm
TriBahtinov-GSO14RC - $42
GSO 14" RC (Astro-Tech, TPO, iOptron, Orion, etc.)
TriBahtinov-SW-127MAK - $23
Skywatcher SkyMax 127 Mak-Cass
TriBahtinov-GSO16RC - $47
GSO 16" RC (Astro-Tech, TPO, iOptron, Orion, etc.)
TriBahtinov-ESDOB1245 - $48
Explore Scientific 12" DOB (DOB1245)
TriBahtinov-GSO8CC - $24
GSO 8" Classical Cassegrain
TriBahtinov-BressMN152 - $23
Bresser Messier Mak Newt 152mm
TriBahtinov-GSO8N - $24
GSO 8" F4 Newtonian
TriBahtinov-VMC200L - $24
Vixen VMC200L
TriBahtinov-CFF250RC - $30
CFF 250mm RC
TriBahtinov-ODOBXT12 - $48
Orion XT12i 12" DOB

Please contact me if you are unsure if your scope is Fastar/Hyperstar compatible.

Hyperstar Note:  The C6, C8, C9.25, C11 and C14 TriBahtinov Masks accommodate both Hyperstar and native Fastar/secondary mirror configurations.  The central hole is sized for the Hyperstar and the mask includes a snap fit bushing to decrease the diameter for the Fastar ring.