SVBONY SV225 Alt-Azimuth telescope mount is the ideal visual astronomy travel companion and strong practicality. Lighr weight and compact design are convenient for customers to carry out. UNC 3/8 -16 thread specification is compatible with Celestron/Skywatcher/Orion/Vixen & most mainstream astronomical OTAs. Standard vixendovetail. You can use it with most telescopes. Specification: Max. additional load capacity: 10kg Mounting Saddle: V-Style Fine adjustment: Yes Manual tracking: Yes Underneath the Base thread: UNC 3/8 -16 Female Worm gear teeth (RA) (piece)：120 Altitude Mount Rotation Angle (Continuous): -60° to + 60° Azimuth Mount Rotation Angle (Continuous): 360° Material: Aluminum 6061T Net Weight :2.34kg Package list: 1XSV225 alt-azimuth Mounts; 1XInstruction Manual; 2XDovetail Lock Knob; 3XLocking screws; 2XFine-tuning Control Lever; 4XAllen Wrench. SV188P Dielectric Mirror Star Diagonal Features Dielectric coatings provides 99% reflectivityM28.5x0.6 filter thread can connect with 1.25in filter directlyBuilt-in brass ring to prevent the accessories barrel from being scratchedMachined and anodized aluminum housing make the SV188P dielectric diagonal durable and uniform Compatible with Telescope 1.SV188P 1.25in dielectric diagonal compatible with any 1.25in refractor telescope 2.SV188P can not connect with the SCT telescope directly, the additional adapter is required if you want to connect SV188P with the SCT telescope 3.SV188P does not fit for reflector telescope Specifications: Size: 1.25in Coatings: Dielectric Reflectivity: 99% Thread: 28.5*0.6 Material: Aluminum Alloy Screw: M4 Set Screw Net Weight: 125g / 4.41oz Package Includes: 1 x 1.25in 90 Deg Dielectric Mirror Diagonal 1x M4 Screws 1x Dust proof plug 1x Dust proof cover. SVBONY universal dovetail base for optical astronomical telescope finder scope; Universal dovetail base for finder scope: Ideal for custom installation of a finder scope on telescopes not already equipped with a compatible base.