SVBONY 2" Extension Tube เพิ่มระยะลำกล้อง 90mm สำหรับกล้องดูดาวขนาดฟอกัสเซอร์ 2"ทุกรุ่น

• ใช้เพื่อช่วยให้สามารถฟอกัสภาพให้ชัดในกรณีที่ฟอกัสเซอร์ไม่สามารถขยับถอยไปมากเพียงพอที่จะได้ภาพที่ชัดได้ (อาจเกิดเมื่อพยายามฟอกัสวัตถุภาคพื้นดินที่อยู่ระยะใกล้ เป็นต้น)
• สามารถใช้ส่องตรง (ไม่ต่อ diagonal) กับกล้องหักเห หรือใช้กับกล้องสะท้อนที่ออกแบบมาสำหรับถ่ายภาพ (ซึ่งปกติระนาบการฟอกัสสำหรับการส่องดูจะอยู่ไกลไปข้างหลังและไม่สามารถฟอกัสได้ถ้าไม่มี extension tube)
• ขนาด barrel 2 นิ้ว สามารถใช้กับกล้องดูดาวหรือกล้องส่องทางไกลที่มีขนาดฟอกัสเซอร์, diagonal หรือ eyepiece holder 2 นิ้ว
• มี compression ring ที่ทำด้วยทองเหลืองที่ช่วยยึด eyepiece ไม่ให้หลุดออกจาก tube โดยไม่ทำให้เป็นรอย

SVBONY Dovetail Clamp with 1 large bolt screw สีเงิน

• Medium dovetail clamp with a brass screw for telescopes and cameras
• Brass locking screws protect your accessories and provide a very stable connection
• 8 holes available, five for M6 and one for 1/4 inch screws, two for M8 screws. Center distance of two holes for M8 screws is 35mm
• Allow connection to almost all kinds of accessories
• Compatible with SVBONY F9143 dovetail plate, sold separately
• Two color options: red and silver

SvBony SV192 Dew Heater 12V for Telescopes and Camera Lens, 560mm

• Prevents dew condensation from forming on the glass surface.
• Provides even heat distribution. Power-efficient design will not result in an extra drain on your power supply.
• 5.5X2.1 female interface design，easy connected to various 12V power inputs;
• Protect optical equipment such as telescopes from fogging or freezing.
• Three-speed regulator with medium-weak heating mode. Adjust temperature according to different usage requirements. Super-fast continuous heating, quick start heating;
• Width of the 50mm belt will not interfere with focusing, and will not produce vignetting in the field of view;
• Great heat preservation effect: imitating OK cloth, SBR, and Black-T three-layer heat preservation material, reducing heat dissipation, and no wrinkles on the inner surface after bending;
• Uniform heating: the built-in aluminum film has a uniform heating surface and no dead ends;
• TPE Silica power cord under low temperature won't become hard, also prevents internal short circuits.
• Measure the circumference of the telescope tube or camera lens (or measure the tube diameter - not the scope aperture - ×3.14). Compatible with OD of telescopes/lenses below 178mm

กล้องเล็ง SVBONY SV179 Red Dot Finder Scope พร้อมก้านยึดแบบฐาน 2 รู (2-Hole Fixing)

• With red dot reflex viewfinder. Simple, affordable and effective red dot sighting device for aiming your telescope
• Have variable brightness levels
• Fully adjustable up and down left and right for alignment with main scope
• LED dot is projected onto a non-magnifying viewing window so you can aim main telescope quickly and easily
• Please choose the correct base type (Two-hole fixing or Dovetail base) that matches your telescope's finder shoe. See pictures below.

ตัวแปลง SVBONY SCT T-adapter สำหรับถ่ายภาพแบบ prime focus photography

กล้องเล็ง Orion EZ Finder II Telescope Reflex Sight  Red Dot Finder Scope พร้อมที่ยึดแบบ dovetail base

• Simple, affordable, and effective red dot sighting device makes aiming your telescope a cinch!
• A small red LED dot is projected onto a non-magnifying viewing window so you can aim the main telescope quickly and easily
• Brightness of the red dot is adjustable to suit your preference
• Thumbwheels allow positioning of the red dot horizontally and vertically for precise telescope alignment
• Includes bracket that fits the dovetail mounting base on many Orion telescopes

ตัวแปลง SVBONY Camera Lens Adapter for Canon (EF / EF-S) lenses

ฟิลเตอร์ SVBONY IR Pass 685nm Filter, 1.25"

• Reduction of seeing effects, heightened contrast
• Great asset for daylight IR-imaging with a digital camera lessening seeing effects
• Improved contrast when utilized for lunar and planetary imaging
• Darken twilight sky background, allowing images of moon and planets to be taken at dawn or dusk
• Made with high-end glass: multi-coated with ion-assisted deposition technology to ensure scratch resistance and stability on the central wavelength
• Filter cell made of lightweight, strong metal. CNC machined, sand-blasted, black anodized, then laser engraved.
• Super thin filter cell with clear aperture of 26mm (for 1.25" version) or 44mm (2" version)
• Can also be used for nature photography in the Near-IR, revealing stunning differences in plants, sky, and clouds (requires the use of a camera that is sensitive to IR above 670nm, such as a modified DSLR or webcam)
• Presented in a high-quality filter box

• Quickly capture dark frames to optimize photo quality
• Opaque - blocks all light from the imaging camera sensor. Help remove dark currents - essential for astrophotography
• Easily eliminate camera noise and hot pixels
• Dark frame acquisition helps remedy such noise and "hot pixels" by canceling out these disruptive effects during image processing
• Threaded and can be directly connected to your filter wheelfor fast conversion between different filters;
• Made of metal for durability. High quality packing box includes foam-lined plastic case

ฟิลเตอร์ SVBONY Variable Polarizing Filters แบบปรับความบริมาณแสงได้, 2'' 

• Acts like a dimmer switch for your telescope, allows you to adjust the amount of light transmission from 1% to 40% by rotating the filter housing
• 2 filter sizes available: 1.25" or 2". Screws onto the insert barrel of standard 1.25" / 2" eyepieces
• Also helpful when observing Venus or bright terrestrial scenes.
• Sturdy plastic case included
• Note: affects metering and autofocus, and is generally not suitable for digital cameras with a high degree of automation
• CAUTION: Not for viewing the Sun!

ฟิลเตอร์ลดแสงรบกวน SVBONY UHC Broadband Light Pollution Reduction Filter, 1.25"

• Designed to selectively reduce transmission of certain wavelengths of light;especially those produced by artificial light
• Cuts mercury vapor and both high and low pressure sodium vapor lights, unwanted natural light caused by neutral oxygen emission in our atmosphere
• Sky background is darker and contrast of emission nebulae are noticeably improved
• Perfect filter for viewing nebula from light polluted skies or for boosting the contrast of nebula from dark sky sites
• Can be used not only for celestial observations but also for astrophotography
• Great for city and suburban observations
• Standard filter thread for standard 1.25" eyepieces and other accessories
• Optical glass lens in aluminum frame. Comes in a sturdy transparent case

SVBONY SV188 90-Degree Zenith Mirror Diagonal for Refractors, 1.25"

• Suitable for refractors, not suitable Newtonians
• Precisely machined to achieve and maintain good optical alignment
• Black thread design inside the lens barrel prevents glare; makes image clearer