5BM57 - Large Aperture Mounts

Large Aperture Mounts
Special flat spring for improved stability versatility and durability
Kinematics, orthogonal angular adjustments
6° range, sensitivity 5 µm
Left or right hand mountable
Vertical and horizontal mounting
1, 2, 3, 4, 6 inch apertures available
Made of steel
Motorized version

5BM57V - Vacuum Compatible
Optical Mount Example

Special holders with two Teflon dowel pads and Teflon fixing screw. The mount is ideal for precision adjustment of 1" (25,4 mm), 2" (50.8 mm), 3" (76.2 mm), 4" (101.6 mm) or 6" (152.4) mirrors or beamsplitters.

The mount comes with 9S65M screw as standard. You may choose different screws. If you order the mount with alternative screws, please specify this in order, by appending the screw code name to the mount code. See section Fine adjustment screws for screws and their codes. A special holder with two contact lines for optics and plastic fixing screw.

Models for 1",2" and 3" optics made entirely of black anodized steel (back and front plates). Models for optics diameters larger then 4" use front plate made of black anodized aluminium.

Large Aperture Mounts





Model 5BM57-1 5BM57-2 5BM57-60 5BM57-3 5BM57-4 5BM57-6
Optics diameter 1" (25.4 mm) 2" (50.8 mm) 2.36" (60 mm) 3" (76.2 mm) 4" (101.6 mm) 6" (152.4 mm)
Mechanism kinematic
Drive type knob
Adjustments Θx, Θy
Special features center mount
Angular range
Sensitivity 0.5 mm fine thread 6 arcsec 5 arcsec 4 arcsec 3 arcsec
Sensitivity 0.25 mm fine thread 3.4 arcsec 2.3 arcsec 1.8 arcsec 1.5 arcsec
Material Steel Base - steel
Front - aluminium
Mounting thread M6 (3 holes) M6 (5 holes) M6 (4 holes) M6 (6 holes)
Mounting post, baseplate
Optic Thickness universal
Optical axis height 27.5 mm 40 mm 44 mm 53 mm 65 mm 96 mm
Adjustment screw 9S65M (0.5 mm fine thread)
Mounting thread for fine screw1 M10x1
Weight, kg 0.07 0.18 0.25 0.44 1.04 1.4
1 Micrometer can be replaced with fine screw.

Related products  
Off-Axis Parabolic Mirrors Dielectric Coated Optics Metallic Coated Optics
Ordering Information
Model Price Availability
5BM57-1 € 98.00 today
5BM57-2 € 126.00 today
5BM57-3 € 162.00 today
5BM57-4 € 229.00 today
5BM57-6 € 298.00 today
5BM57-60 € 134.00 today

Fixed Optics Mounts, Optical Components Holders, Optic Clamps...

Large Aperture Mounts