Celestron USB 冷却风扇是 StarSense Exploerer 10” 和 12” 多布森望远镜的理想冷却解决方案。对于那些迫不及待想要观察的人来说，这款方便的配件可以更快地将主镜冷却至室外环境温度。这样可以更快地获得更清晰、更聚焦的视图 — 并为您提供更多的观察时间。

该冷却风扇可直接安装在 StarSense Explorer 10” 和 12” 多布森望远镜的后部，并可与任何 USB 电源（便携式移动电源、交流电壁式适配器等）配合使用。主镜冷却后，您即可开始观察，然后断开风扇的 USB 电源。将电缆连接到集成存储夹，以保持井然有序。

为冷却风扇供电

任何 USB 电源都可以为冷却风扇充电。与市场上的其他风扇不同，这款用于 Dobsonian 望远镜的 USB 冷却风扇不需要外部笨重的 12V 电源或一次性电池。这款风扇使用的电压（5V 对 12V）低于竞争机型。不过，我们严格的内部测试表明，与竞争对手相比，Celestron 冷却风扇提供了更好的气流和更快的整体冷却。

兼容望远镜

用于多布森望远镜的 USB 冷却风扇与 StarSense Explorer 10 英寸和 12 英寸多布森望远镜以及许多其他具有兼容风扇支架（四个 M4 x 0.7 螺纹孔，呈方形，孔间距为 71.5 毫米）的第三方多布森望远镜和牛顿反射镜兼容。

卓越品质满足高端期望。

宾得 8x40 S 系列 SP WP 双筒望远镜在任何天气和光照条件下均可放心使用。40 毫米物镜采用全多层镀膜，可减少反射，并最大限度地提高整个光路的透光率，而不会让它们在长途跋涉中显得过于笨重。利用传统的保罗棱镜配置，可让场景具有丰富的景深，带来身临其境的观察体验，并带来舒适的手感和较大的表面积，以保持稳固的抓握。

即使在弱光环境下，涂层也能确保图像明亮清晰，对比度高，实用的 8 倍放大倍率可使拍摄对象近距离观察，同时保持 363 度的视野，以保持态势感知。

设计中采用的大物镜可在所有光照条件下实现对比度丰富、明亮的视觉效果。

优质多层镀膜确保双筒望远镜的最大透光率。在最广泛的观看条件下，可呈现明亮、清晰、逼真的图像。

专用保护涂层（仅限 SD 型号）可防尘、防水、防油脂，保持光学元件清洁，使图像质量保持最佳状态。

坚固的机身结构使这些双筒望远镜极其坚固，能够保持光学对准。这确保了产品整个使用寿命期间的舒适观看。

防水且充氮（JIS 6级），可应对最极端的天气条件（潜水至 1 米）。

规格

库存编号：65871

无论您是要增强支架设置还是购买替换部件，配重物都用于平衡光学管 (OTA) 和右轴 (RA 轴) 另一侧配件的重量。如果您在望远镜设置中添加配件（例如相机、导向器等），则可能需要添加额外的配重物来抵消重量。

如果一侧或另一侧失去平衡，可能会损坏您的 OTA 和设置、电机齿轮，并且/或者可能导致跟踪精度问题。您可以添加额外的配重，通过减少质量惯性来提高系统的响应能力，但您需要确保沿轴分散配重，以减少对设置的损坏，并确保这对您的望远镜设置具有成本效益和价值。

该配重块配有坚固的滚花旋钮锁，可安全地固定在配重块轴上。该配重块设计用于安装 19 毫米配重块轴

一睹澳大利亚的羽毛奇观

鸟类探索的巅峰

本书是目前最新的澳大利亚鸟类指南。该权威指南以日常语言编写，配有在野外拍摄的清晰、明亮的数字图像，内容包括：

• 此前认为已经灭绝的夜鹦鹉的第一份记录和照片
• 最近被确认为完整物种的小灰猫头鹰
• 厚嘴草鹪鹩
• 所有七种鹌鹑画眉
• 纸皮霸鹟
• 雄性华丽琴鸟求偶表演的罕见照片
• 鸨求偶羽毛
• 雄鸟正在跳求偶舞
• 这是澳大利亚金丝燕筑巢群的第一张照片，拍摄于热带昆士兰州的一个深而暗的洞穴中

...还有更多。

关于每种鸟的易于获取的信息包括：俗名和学名、大小、描述、行为、偏好的栖息地、进食习惯、声音、状态和繁殖。

放大细节
分布图排列在鸟类照片插图旁边。双目图标指示可找到特定鸟类的“热点”。

全景体验
所有在澳大利亚大陆、塔斯马尼亚岛和近海大陆岛屿和海洋上定期记录的野生鸟类，包括在野外可辨别差异的亚种，都已被纳入并拍照。

通过专家的视角
展出了澳大利亚最优秀的野生动物摄影师拍摄的 1,400 多张照片，其中包括 Colin Cock、Michael Schmid、Eric Sohn Joo Tan、Duade Patton、John Anderson、Alwyn Simple、Peter Jacobs、Andrew Bell、Tony Ashton、Nolan Caldwell、Chris Wiley、Maureen Goninan、Marlene Lyelle 和 George Adams 等等。

献给所有对羽毛感兴趣的人
无论您是刚刚开始探索鸟类奇观世界的初学者，还是拥有多年野外经验的经验丰富的“鸟类爱好者”，这本书都将成为每个人都会喜欢的宝贵资源。

AZ-148 Flexi-Shield ^®柔性防露罩适用于带有上部和下部燕尾槽的 Celestron 11" SCT，包括：

• CGX-L 1100 SCT
• CGX-L 1100 EdgeHD
• CGX-L 1100 RASA
• CGX-1100 超高速
• CGX 1100 EdgeHD
• CGX 1100 拉萨
• CGEM II 1100 SCT
  
• CGEM II 1100 EdgeHD

Nikon ACTION 10x50 is the next-generation successor to Nikon’s highly acclaimed ACULON A211 binoculars. It delivers enhanced optical performance, improved ergonomics, and rugged durability designed for nature enthusiasts and outdoor adventurers.

• Ergonomic design for excellent handling and a secure grip.
• Multilayer-coated lenses and large objective lens diameter for delivering bright, clear images.
• Rubber armouring for shock resistance and a firm, comfortable grip.
• Aluminium alloy body employed for enhanced durability
• Long eye relief design ensures a clear field of view, even for eyeglass wearers 
  

Nikon’s ACTION series redefines versatile observation. As the successor models to the ACULON A211, these binoculars feature a rugged aluminium alloy body and shock-resistant rubber armouring, excelling in demanding environments like birdwatching or stadiums. Nikon optics and multilayer-coated lenses deliver bright, crystal-clear images. With a wide field of view exceeding 60 degrees on select models and long eye relief for eyeglass wearers, they ensure fatigue-free viewing. This compact design balances professional performance with accessible handling, making it the definitive choice for reliable, high-contrast magnification.

Specifications

*1: Apparent field of view is calculated based on the ISO14132-1:2015 standard.
*2: When minimum magnification (10x) is selected.

The new heavy duty telescope mount from ZWO that grows with you, with the precision to keep you exploring.

Why Choose the AM7 Harmonic Equatorial Mount？

1. High capacity, two ways
   Carries up to 20 kg with no counterweight. Up to 30 kg with a counterweight.
   
2. Precision you can verify
   Periodic error is controlled within plus or minus 10 arcseconds, and every mount includes its own measured PE test report.
   
3. Cleaner setup, less mess
   Built in USB C and DC power ports on the dovetail saddle help keep cables organized.
   
4. Two modes, one mount
   Equatorial mode for tracking and imaging. Alt-azimuth mode for visual observing.
   
5. Works anywhere on Earth
   Zero to 90 degrees altitude range means it can be used at any latitude worldwide.
6. Control the way you like
   Bluetooth, Wi Fi, or the included hand controller.
7. Ready for cold nights
   Rated down to minus 20 C.
8. A control system built for reliability
   ZWO’s in house control system is designed for stable, dependable operation.
9. Portable by design
   Despite its capacity, the mount weighs about 6.5 kg.
10. Backed by support and a global community
    ZWO mounts are widely used by astrophotographers worldwide, with a strong user community and support network.

ZWO AM7, More Capacity. More Precision.

The ZWO AM7 is ZWO's highest-capacity harmonic drive telescope mount. It is built with heavier imaging rigs in mind, such as telescopes with long focal lengths, where tracking accuracy matters most.

Load Capacity

The ZWO AM7 supports up to 20 kg without counterweights, and up to 30 kg with counterweights installed. That gives you room to run a serious setup now and still scale up later.

Tracking and GoTo

The goal is simple. Solid tracking and reliable GoTo under real payload, so you spend less time managing limits and more time imaging and exploring the night sky.

A Mount for the Long Haul

The ZWO AM7 handles both small and heavy setups, so you can grow into bigger telescopes without outgrowing your mount.

*Weights are manually measured and may vary slightly.

Professional Grade Precision With a Custom Harmonic Drive Mount

Built out of years of ZWO development and tuned for astrophotography, the ZWO AM7's custom harmonic drive is designed for smooth, stable tracking with strong torque and consistent performance.

Every ZWO AM7 is individually tested at the factory before it ships. You get a unique periodic error curve report for your mount, so you can see the measured tracking performance of the exact unit you own.

Key specs and testing:

• Custom harmonic drive system
• Total harmonic gear reduction ratio 300 to 1
• Individual periodic error test report included
• Periodic error controlled within plus or minus 10 arcseconds for dependable high precision tracking. (That's the thickness of a human hair viewed from about 20 meters away).
  

Clean Cables. Less Mess. Fast Setup.

A lot of telescope setups end up as a tangle of wires and extra adapters. The ZWO AM7 is built to keep things cleaner and simpler.

With built in USB-C and power ports on the mount, you can run power and data where you need it without cables hanging everywhere. Even if you have a custom rig with a camera, focuser, guide gear, and other accessories, the AM7 helps reduce clutter so you can set up faster and spend more time imaging the night sky.

Cable Management Made Simple

Integrated USB C and DC Power Ports
At only 6.75 kg, the ZWO AM7 is designed to be easy to carry and quick to set up. The built in dovetail plate includes a USB C port and DC power outlets, so you can route power and data through the mount instead of running a mess of cables around it. The result is cleaner cable routing and far less of the usual cable spider web.

For mount adjustments when needed, the ZWO AM7 also includes a magnetic hex wrench that stores directly on the mount body, so it stays close at hand and does not get lost in the dark.

Dual Mode Operation

One Mount for Viewing and Imaging

The ZWO AM7 supports two modes so you can use the same mount for casual observing or serious imaging. Switching modes is done with a quick hardware change to the mount's position, then you select the mode on the hand controller.

Equatorial Mode
Best for accurate sky tracking for imaging and longer sessions.

Alt Azimuth Mode
Best for visual observing with quick setup and simple pointing.

Mode Indicator Lights

Red means Equatorial Mode
Green means Alt Azimuth Mode

The ZWO AM7 supports a full 0 to 90 degree altitude adjustment range, so it can be aligned and used almost anywhere on Earth, from the equator to the poles. That makes it a practical choice for travel or a permanent setup, no matter where you observe.

How the two stage adjustment works

Stage one adjustment range
Use the altitude adjustment knob for 0 to 60 degrees.

Stage two adjustment range
Move the hex screw to the second position to enable 30 to 90 degrees.

User-friendly Design
Portable Control, Refined

Wi-Fi and Bluetooth Connectivity

The ZWO AM7 gives you two simple ways to connect, Wi-Fi and Bluetooth, so control is always straightforward.

Bluetooth makes quick sessions easier. Open your phone, connect directly, and control the mount without a hand controller. No need to switch your device over to the mount’s Wi Fi network just to get running.

What is new in the latest version

Bluetooth control

You can turn Bluetooth on or off by holding the BT button for 10 seconds. The setting is saved, even after power off.

A cleaner indicator light

A new light guide column softens the LEDs, so the status lights are easier on your eyes at night and won't interfere with your camera's either.

AM7 Smart Hand Controller

More Than a Controller

The ZWO AM7 includes a joystick style hand controller designed for comfortable, and intuitive control. It is also a built in connection hub for the mount. With its integrated Wi-Fi hotspot, you can control the mount wirelessly, manage settings through a simple web interface, and perform firmware updates for both the hand controller and the mount. This is the main path for keeping the system current.

• Bluetooth When You Want It
• Off When You Need It

Bluetooth control is a convenient option for direct smartphone control in the field. But some environments need tighter wireless control, like remote observatories or permanent installations where interference or policy requirements matter. For those cases, AM7 lets you easily disable Bluetooth when needed, then enable it again when it makes sense.

Hollow-knob ergonomic design

The dovetail plate tension knob and azimuth fine-tuning knob feature a hollow structure. When manual rotation is limited, you can insert a hex wrench to gain extra leverage, making adjustments easier and more reliable with less effort.

Smart Control, Easy Operation

Sky Atlas Mobile App for iOS and Android

The ZWO AM7 can be controlled wirelessly using the Sky Atlas app on iOS and Android. You get a live star map, simple object search, and quick tools like Tonight’s Best, target GoTo, and precise pointing to the objects you want to observe or image.

Works Smoothly With ASIAIR in Station Mode
The ZWO AM7 also supports station mode, which makes it easy to integrate with a controller like ASIAIR. With the hand controller providing Wi-Fi, ASIAIR can connect to the mount over the network, so you can run a clean setup without a direct control cable between the AIR and the mount.

Seamless Integration With ASIAIR

ASIAIR can connect to and control the ZWO AM7 using either wireless or wired connections, so it fits cleanly into a wide range of setups.

Because the ZWO AM7 and ZWO ASIAIR are part of the same ecosystem, it takes the guesswork out of driver support and compatibility. You are not stitching together software from different vendors and hoping everything plays nicely. And as ASIAIR software continues to evolve with new features, you can count on AM7 support to keep pace, with new mount capabilities integrated directly within the same system.

Specifications

The payload capacity of the ZWO AM7 equatorial mount is derived from the simulation calculations as shown in the figure above:

1. Maximum payload without counterweight: 20 kg (corresponding to a maximum output torque of 40 N·m).

2. It is recommended to use a counterweight ≤ 10 kg. When using a 10 kg counterweight, please install it with a moment arm between 20 cm and 30 cm.  
For other counterweight masses, the allowable installation position can be calculated as follows:

Assuming the counterweight mass is m kg, the allowable moment arm length L must satisfy:  
20 N·m ≤ m * g * L ≤ 30 N·m  

Where g = 9.8 m/s² (can be approximated as 10 m/s² for calculation).  
For example, with a 5 kg counterweight: L ranges from 20 N·m / (5 × 10 m/s²) = 0.4 m to 30 N·m / (5 × 10 m/s²) = 0.6 m.

Have you ever observed the night sky with astronomy binoculars?

These affordable Acuter binoculars offer a large 80mm aperture optics for collecting the fine details of star cluster, nebulae and even distant galaxies millions of light years away. 

Away from city lights under a dark sky, you'll never forget the experience of scanning the star clouds and dust lanes in our home galaxy, the Milky Way.

They mount on any photographic tripod to ensure steady viewing for extended periods. An adjustable balance point positions them perfectly. 

While ideal for astronomy, their high magnification also makes them a great choice for whale watching from the shoreline, wildlife viewing or taking in distant views. 

Details:

• Aperture: 80mm
• Magnification: 20x
• Case included: Yes
• Tripod Mount: Standard .25" photographic

Designed for long-range clarity, the ZeroTech TRACE 10x45 delivers best-in-class brightness, resolution, and sharpness. Built with Abbe-Koenig prisms and a high-quality ED objective lens, the TRACE 10x45 offers over 90% light transmission for remarkable low-light performance and vibrant true-to-life colour.

Whether you’re viewing wildlife at at distance, bird watching under less than ideal conditions or even spending a clear night observing star clouds in the Milky Way, the TRACE 10x45 delivers a wider field of view and brighter image than traditional 10x42 and 10x50 binoculars—without the extra bulk or cost.

Key Features:

• 10x45 Magnification – Perfect for general field use with a wide, immersive view
• ED Objective Lens – Reduces chromatic aberration for lifelike colour and crisp detail
• Abbe-Koenig Prisms – Premium prism system for superior brightness and image contrast
• 90%+ Light Transmission – Exceptional low-light performance for dawn and dusk viewing
• Edge-to-Edge Sharpness – Delivers clarity from the centre to the outer rim of the image
• Waterproof & Fog-Proof – Nitrogen-purged and sealed for all-weather reliability
• Unconditional Lifetime Warranty – Confidence for life, no questions asked

Built to endure the harshest conditions and backed by ZeroTech’s lifetime warranty, this is your optic for life.

Specifications:

What's in the Box:

• 10x45 Trace Binoculars
• Protective binocular EVA case
• ZeroTech neck strap
• High Quality Microfibre Cloth

The M48-M42 adapter is used in order to fit your imaging train together with different types of equipment and sizes.

Main Features:

Anti-dew

ASI6200 Pro comes with the polyimide heater that can avoid any dew problems.
The anti-dew heater which completely fit the protective window will heat it to avoid any dew problems.

Full Frame format

The ASI6200 Pro camera uses a full-frame format. The outstanding 9576x6388 resolution provided by the onboard Sony IMX455 sensor makes this camera a 61.2-megapixel full frame powerhouse! The sensor length and width are 36mm x 24mm respectively, and the diagonal is 43.3mm. This is a camera with a small pixel size of 3.76um that can accommodate a large well depth of 51.4ke.

Native 16bit ADC

ASI6200 Pro camera is our first batch of CMOS astronomy cameras with true 16-bit ADC. It is not a CCD-style 16-bit ADC – it really can achieve a dynamic range output of 14 stops. This significantly improves the image sharpness and contrast, and the contrast gradients are smoother and more natural-looking.

Built for astrophotography

USB3.0 & 512M DDR3 Memory
The ASI6200 Pro camera is equipped with a USB 3.0 transmission interface and a built-in 512MB DDR3 cache to ensure stable and secure data transmission.

QE value

The QE peak value of the ASI6200MC Pro camera is 80%.

Relative response（ASI6200MC Pro）

The QE peak value of the ASI6200MM Pro camera is 91%.

Ultra-low dark current

The unique dark current suppression technology can further reduce dark current noise. At a cooling temperature of 0°C, the dark current noise is only 0.0017e/s/pix. This means a 300s exposure will only cause a dark current noise of 0.51 e/pix, which is completely negligible!

Camera Details

Some images by ZWO users

The best solution of 55mm back focus length

Mechanical Diagram

What's in the box?

M48传感器倾斜板是ZWO自主研发的，专为配合M48螺纹的望远镜而制作的。

厚度为5mm。表面有多个螺丝孔，可轻松将其连接到M68 OAG和APS-C和全画幅相机，如ASI2600/ASI6200/ASI2400。

机械制图

SKU：ZWO-M48 板

Sky-Watcher 114/450 牛顿望远镜是一款全自动望远镜，非常适合初学者和想要直接进行观测的人。使用“明亮物体”校准模式，校准支架仅需几分钟，而计算机化的 SynScan 系统是终极升级，可自动指向和跟踪天空中超过 42,000 个物体！这意味着花在寻找微弱星云或遥远行星上的时间更少，而花在享受观测上的时间更多。天文学从未如此简单！

Sky-Watcher 114/450 具有出色的抛物面光学系统，可为月球、行星和深空物体的观测提供出色的全方位性能。AZ-Go2 支架 - 可通过 Wi-Fi 使用 iOS 和 Android 设备进行控制，并与 SynScan 手动控制器兼容，可提供平稳跟踪和快速对准。使用 Wi-Fi 可通过移动设备（智能手机或平板电脑）无线控制望远镜。

从 Google Play 或 App Store 下载 SynScan 应用程序。

AZ-Go2 支架特点：

• 无线网络连接
• DC12V电压
• 1.3kg 安装重量
• 直流电机

包装内容：

• 114/450mm 牛顿式
• AZ-Go2 支架
• 智能手机适配器
• Super Possl 25mm 和 10mm 目镜 – 1.25 英寸镜筒
• 红点寻星镜
• 电源要求：12v 直流电源（正极）或 AA 电池（不提供）
• 带附件托盘的不锈钢三脚架

规格：

高度紧凑和便携。曼富图 BeFree 旅行三脚架带球头，可轻松放入您的行李箱，方便携带，同时为您的摄影工作提供高精度和准确的支撑。独特的折叠机制是这款带球头三脚架的突出特点。通过设计腿以完美折叠在球头和快装板上，它的尺寸缩小到只有 40 厘米长。现在，您可以轻松携带 Be Free 铝合金旅行三脚架，无论您需要去哪里，都无需大惊小怪或麻烦。带球头三脚架可承受 4 公斤的有效载荷，为您提供更准确的拍摄效果。即使使用长焦镜头，您仍将获得更清晰的图像。

这款带云台的三脚架采用特殊设计，可确保您的相机牢牢锁定在原位。借助获得专利的脚管角度选择器，您可以在两种倾斜度之间进行选择，从而尽可能精确地完成工作。Be Free 铝合金旅行三脚架采用时尚的意大利设计，将脱颖而出。收拾行装，去旅行，找到完美的图像。

Manfrotto BeFree 旅行三脚架带球头使用说明书

Sky-Watcher 9x50mm 寻星镜带支架

Sky-Watcher 9×50 寻星镜带支架是实现准确瞄准的重要配件。凭借其 50 毫米大口径、45° 宽视野和简单的十字准线，您一定能通过这款出色的配件获得近乎完美的导航视线，满足您的天文观测需求。此外，寻星镜还配有安装支架，便于安装，可固定在 Skywatcher 的几乎所有标准寻星镜支架上。

• 消色差 9x50mm 寻星镜
• 50mm 大光圈
• 45°宽视野
• 十字准线
• 配有安装支架

它适合所有带有标准寻星镜燕尾槽的望远镜。如果您想将其连接到 Celestron SCT 管，可以使用此 BINTEL 配件：

Unlock the full potential of your Sony Mirrorless E-Mount camera with our expertly designed adapter ring. Tailored to bridge your camera with the expansive cosmos or the intricate microverse, this adapter ring transforms your Sony device into a gateway to discovery. Crafted with precision, it offers a flawless fit for both telescopic and microscopic connections.

When paired with a compatible T-Adapter, your camera will be ready to capture the celestial dance of the stars, the delicate crescent of a waning moon, or the fiery hues of a sunset on another world. The adapter's robust construction ensures stability, minimizing vibrations to provide a solid foundation for your astrophotography pursuits.

For those inclined towards the microscopic, attach our adapter to a C-Mount and delve into the intricate details of the unseen. Whether you're capturing the complex structure of a crystal or the vibrant ecosystem within a drop of water, our adapter guarantees a secure and aligned connection for superior optical performance.

Each adapter is meticulously machined to maintain the highest quality standards. The internal secondary ring is cut with exacting precision, ensuring a snug fit to your camera body and promoting optimal image alignment. This attention to detail provides you with the confidence that your camera is securely mounted, allowing you to focus on capturing stunning images.

Embrace the extraordinary with our adapter ring and elevate your photography to cosmic proportions or microscopic details. This is more than just an adapter—it's an indispensable tool for photographers and explorers who demand the best in precision and compatibility.

The Saxon 12" DeepSky CT Dobsonian Telescope features a powerhouse telescope with amazing light-gathering capabilities that's easy to use and transport.

This telescope is the retractable twin to the full-tube saxon 12" DeepSky Dobsonian Telescope and comes with the same specs of 305mm aperture and a focal length of 1500mm. Featuring a collapsible truss-tube dobsonian design, the optical tube can be retracted into a shorter length and locked down to ensure secure and easy transportation. This scope also comes with a paraboloidal primary mirror to eliminate spherical aberration allowing you to see wide-field views of the Moon, constellations and deep sky objects such as the Great Orion Nebula.

Assembly of the telescope requires no additional tools. You'll be pleased with how easy it is to use the saxon 12" DeepSky CT Dobsonian Telescope with its Dobsonian mount. Simply swivel the telescope to the direction of your intended object and look through the eyepiece. This scope's Teflon bearing system in both axes with tension control handle means you'll be able to smoothly move your telescope to a precise location.

The DeepSky CT Dobsonian Telescopes series comes in three sizes - 8", 10" and 12".

What is a Dobsonian telescope and why the tension control handle?

A simple, elegant form of an alt-azimuth mount made to carry a Newtonian reflector was popularized by John Dobson in the late 1970's. The Dobsonian mounted telescope is popular among amateur astronomers and telescope makers because of its simplicity. In its simplest form, the Dobsonian mount consists of a box which allows the optical tube assembly to pivot in altitude, while the box itself is swivelled on a base in azimuth.

The Dobsonian mount usually relies on the friction between the side bearings on the optical tube of the telescope and a frictional material on the saddle to hold the optical tube in place. If there is too much friction, the telescope is difficult to move to center an object in the filed of view. If there is too little friction, the telescope will not sty where it is positioned. This makes stabilizing the optical tube of the telescope difficult when using a Dobsonian mount, especially when accessories, such as a finderscope or an eyepiece, are added to the optical tube. As long as the amount of friction is at an appropriate level, and therefore stabilization of the optical tube is achieved, the telescope can remain in its desired position to view an object and maintain its position even when the mount is rotated.

The devices for stabilizing a telescope on the Dobsonian mount currently available include: a sliceable weight to counter balance the weight of the telescope, a friction lock that must be adjusted to inhibit movement of the telescope, and a spring attached between the telescope tube and mount to aid in stabilization.

These devices are inconvenient to use because they do not provide a simple and user-friendly way to adjust the friction. The objective of the saxon Tension Control Handle invention is to provide a tension adjuster that users can easily turn to add or reduce tension, thereby increasing or decreasing the friction between the optical tube and the sideboard of the mount.

By providing such a tension adjuster, the telescope does not need to be balanced in order to stay in position. The tension adjuster can be tightened such that the optical tube can stay in a position but can still be moved when prompted to adjust the position of the optical tube. Alternatively, the tension adjuster can be completely tightened to lock the optical tube in position.

QHY5III485C 采用索尼全新 IMX485 背照式 840 万像素彩色 CMOS 传感器，阵列尺寸为 3864 x 2180 像素，分辨率为 2.9um。使用 USB 3.0 接口，8 位全帧率为 44 FPS，16 位全帧率为 18.5 FPS。较小的感兴趣区域将产生更快的帧率。

QHY5III485C的分辨率为16：9，相当于主流的视频输出比例，在原生高分辨率的加持下，485C在天文视频录制、天文科普直播等方面能发挥出特殊的作用。

QHY5III485C特意配备了128MB DDR内置图像缓冲区，在非视频输出模式下，DDR内置缓冲区可以有效缓解高分辨率大数据量带来的传输压力，减少信息丢失。

背照式 CMOS 结构的一个好处是灵敏度提高。在典型的前照式传感器中，来自目标的光子进入传感器的感光层必须首先穿过嵌入在感光层正上方的金属布线。布线结构会反射部分光子并降低传感器的效率。

在背照式传感器中，光线可以从背面进入感光表面。在这种情况下，传感器的嵌入式布线结构位于感光层下方。因此，更多的入射光子撞击感光层，并在像素阱中产生和捕获更多的电子。光子与电子产生的比率称为量子效率。量子效率越高，传感器将光子转换为电子的效率就越高，因此传感器对捕捉暗淡物体的图像就越敏感。

QHY5III485C标准套装内含2.5mm鱼眼镜头，可将行星相机转换为高分辨率、840万像素、180度视野的全天空相机。

规格

这款便携活动包包含一个可折叠的太空场景、两张贴纸、一张填色纸、一个 I-Spy 游戏以及一些令人惊奇的事实。它是鼓励孩子们发挥想象力并向好奇的孩子介绍天文学的最佳方式。

适合3至8岁的儿童

一流的操作人体工程学

全新设计的滚轮让惯用左手和惯用右手的用户都能快速准确地选择缩放级别或菜单项，即使在紧张的情况下，甚至戴着手套时也是如此。专门开发的目镜具有较大的主观视野，形状像一副双筒望远镜。它提供了特别舒适和身临其境的观看体验，让用户可以完全掌握情况。

创新电源管理

DTI 6 的电池可连续观察 6.5 小时，并且易于更换。它还可以使用标准移动电源充电，从而确保观察员永远不会耗尽电量。待机模式以非接触方式激活 - 如果 DTI 6 被放下或拿起，它会自动关闭或打开。

适合各种情况的完美图像设置

DTI 6 可以根据您的特定需求进行定制。个人设置可以保存到最多四个观察配置文件中，以便您能够应对任何情况。此外，您始终可以在眨眼之间从两个可互换镜头中选择出最适合当前观察情况的镜头。此外，预设的雾化、通用、发现和识别观察模式有助于根据相应的观察情况定制视图。

高度可定制

众多配置选项允许您自定义热成像摄像机，使 DTI 6 成为您自己的。从选择您喜欢的变焦速度到调整待机定时器的持续时间和 LED 配置，再到创建您自己的调色板，DTI 6 可以根据您的喜好和特定需求进行自定义。

规格

1. L-eXtreme F/2 简介

Optolong L-eXtreme F/2 是一款双波段（500.7 nm 和 656.28 nm，FWHM=7 nm）窄带通滤光片，满足连续变化角度的透射要求。以天文特征谱线（OIII、Ha）为主要透射波长，OIII 和 H-Alpha 星云发射线在 f2 - f3.3 焦比下准确通过。这是 Optolong 专门为快速光学系统或快速焦比成像系统开发的产品。它在 RASA、HyperStar 和其他快速焦比望远镜上表现良好。

主要特点：

♦与单次彩色天文相机、单色天文相机、数码单反相机配合使用，可以快速获得清晰细致的深空图像；

♦非常适合快速光学系统，如RASA、Hyperstar和其他快速焦比望远镜用户；

♦建议使用焦比为f2至f3.3的快速光学系统；

♦抗光污染、对比度更好、天体细节更多：此滤镜可滤除目标天体以外的背景光和噪音，以获得更佳的图像细节和对比度。L-eXtreme F/2 可有效阻挡光污染，使图像不会受到背景中不必要的灯光和天光的影响。您可以在快速光学系统中快速获得满意的图像。

2. 光谱及特性

L-eXtreme F/2 针对天体的发射线和光污染发射线特点，在遮挡大部分光污染的同时，保留了星云 OIII 和 Ha 的突出色彩。L-eXtreme F2 针对快速光学系统的特点进行了专门设计和优化计算，始终保持 OIII 和 Ha 两个波段的高透过率，帮助用户更准确、更快速地捕捉这些波段的星云发射线，获得更好的天文摄影图像。

如何读图表？

▲横轴为波长，单位为纳米（nm）。

▲纵轴表示透射率，单位为%。

3. 涂层技术

·多层增透膜

·非胶粘型光学基片镀膜

·Optolong滤镜采用基于离子辅助沉积镀膜技术的精密镀膜，经久耐用，耐刮擦，中心波长稳定，不受温度变化的影响。

·行星旋转系统提供涂层的精确性和均匀性，确保通带透射率和带外光密度的高值。

库存单位：14803

Meade 望远镜盖 8 英寸 LX 系列

这款防风雨和防紫外线的盖子可保护您的 8 英寸 LX 系列望远镜，适合短期户外使用，例如多次日间/夜间星空派对或在长周末在后院安装 Meade 望远镜盖。不适合长期存放。由银色织物材料制成，内衬为黑色。适用于白天的高温、寒冷、小雨和露水。阻挡紫外线以延长望远镜在户外的使用寿命。

防风雨和防紫外线的外壳可以保护您的 LX 系列望远镜，适合短期户外使用，例如多次昼夜星空聚会或在后院设置几天。

适合佳能 RF 卡口的最佳三阳广角镜头！

手动对焦 14mm F2.8 是三阳最畅销的产品，具有视角广、分辨率高、图像清晰和色彩鲜艳等特点。搭配轻便的佳能 RF 卡口无反光镜相机，您可以随时随地享受摄影乐趣。

RF 卡口防风雨超多镀膜非球面镜头 H-ASP ED HR 镜头 - 新款 MF 14mm F2.8 RF 镜头采用手动对焦系统，易于调节。即使在最大光圈下，您也可以获得出色的清晰度。115.7˚ 广角使您能够从风景到室内等创造出具有深度感和空间感的出色图像。

佳能 RF 卡口手动广角镜头 - 作为三阳首款佳能 RF 卡口镜头，MF 14mm F2.8 RF 也是三阳最畅销和最畅销的产品。这款极具吸引力的手动镜头具有深度和易于调整的焦点，为用户提供了创造力的爆发。

三阳畅销产品带来广角摄影 - MF 14mm F2.8 RF 拥有 115.7˚ 广角，从广阔的风景、室内到广角天文摄影，都能拍出具有深度感和空间感的图像。内置花瓣形遮光罩可有效阻挡不必要的杂散光，并最大限度地提高图像质量。

先进的光学技术带来出色的分辨率 - MF 14mm F2.8 RF 包含 - ASP、H-ASP、ED 和 HR 镜片，可调节光线的路径，为传感器提供清晰生动的图像。Samayang 超多涂层技术可有效控制眩光和鬼影效果。

防风雨密封，可防小雨和小雪 - MF 14mm F2.8 RF 采用防风雨密封，可防小雨和小雪。这为用户提供了稳定性，并有效地保护了镜头。

规格

通用燕尾板 24 英寸

孔间距：3.5"、60毫米、2"、1.5"、35毫米、1.25"。

适合 Astro Physics、Astro-Tech、Borg、Celestron、Explore Scientific、Meade、Orion、Parallax、Questar、Stellarvue、Takahashi、TeleVue、Vixen、William Optics

重量 4.2 磅，长度 24 英寸，厚度 0.7 英寸

包含 1 个安全止动螺钉

Losmandy DVCM2 摄像机支架 - 三轴

适用于 D 和 V 系列板。
三轴，360 度摄像机旋转，+/- 45 度摄像机倾斜，360 度单元旋转，燕尾安装，无需工具。

适合所有配备 1/4 英寸 20tpi 三脚架的相机

重量。2.7磅。
高度。从燕尾板顶部到相机支架顶部：
D 板=3.95”
V 型板=3.65”

http://losmandy.com/cm2-movie.html

Losmandy DM14 燕尾板

燕尾板是 Losmandy 二次系统的核心。0.5 英寸 x 4.0 英寸 x 管组件的长度。

燕尾板可安装在管组件的顶部和底部，用于安装所有 D 系列配件，从而可以将管的两侧用于设备。

燕尾板与 Losmandy 系列中的所有配件一样，由铝材加工而成，重量轻且坚固，然后进行黑色阳极氧化处理，以获得坚固、无腐蚀的表面。

Meade 燕尾板，14 英寸，用螺栓固定到现有孔中。

包括弯曲块，用于精确配合管组件。包括不锈钢硬件。

Gerber Explorer HD 10x25 Binoculars with Phase Coating

The Gerber Explorer HD Series ii 10x25 is a compact roof prism binocular representing great value for money. Outdoor enthusiasts will find it a perfect companion for sports events, bird watching, hunting, hiking and nature observing. It features Multi-Coated Optics with Phase Coating to obtain bright and crisp images of objects. It is waterproof and fogproof to be at home in harsh environments. Its efficient design makes it compact enough to be taken anywhere and is incredibly versitile.

• Magnification: 10x (Maximum magnification)
• Objective: 25mm (Size of objective lens)

Includes:

• Binocular 10x25
• Neck Strap
• Soft Case with Strap
• Cleaning Cloth 

Specifications