1. บทนำ
The Celestron SkyMaster 20x80 binoculars are designed for high-power viewing, ideal for both astronomical observations and long-range terrestrial viewing. Featuring large 80mm objective lenses and 20x magnification, these binoculars are engineered to provide bright, sharp images, especially in low-light conditions. This manual provides essential information for setting up, operating, maintaining, and troubleshooting your binoculars to ensure optimal performance and longevity.

Figure 1: Celestron SkyMaster 20x80 Binoculars, showcasing their robust design and large objective lenses.
2. อะไรอยู่ในกล่อง
เมื่อแกะกล่องแล้วโปรดตรวจสอบให้แน่ใจว่ามีสิ่งของต่อไปนี้ครบถ้วน:
- Celestron SkyMaster 20x80 Binoculars
- Built-in Tripod Adapter
- ฝาปิดเลนส์ใกล้วัตถุ
- Rainguard (Eyepiece Cover)
- กระเป๋าหิ้วดีลักซ์
- สายคล้องคอ
- ผ้าเลนส์
- คู่มือการใช้งาน (เอกสารนี้)

Figure 2: All items included with your Celestron SkyMaster 20x80 Binoculars, neatly arranged.
3. การตั้งค่า
3.1 การแกะกล่องและการตรวจสอบเบื้องต้น
Carefully remove the binoculars and all accessories from their packaging. Inspect all components for any signs of damage. Keep the original packaging for future storage or transport.
3.2 การติดสายคล้องคอ
Thread the ends of the neck strap through the strap lugs located on each side of the binocular body. Adjust the length for comfortable carrying around your neck. Due to the weight of these binoculars, using the neck strap for extended periods of handheld viewing is not recommended.
3.3 การติดตั้งบนขาตั้งกล้อง
The Celestron SkyMaster 20x80 binoculars are large and heavy, making a tripod essential for stable, comfortable, and extended viewing sessions. They feature a built-in 1/4"-20 tripod adapter rod, allowing direct attachment to most standard photographic tripods.
- Locate the tripod adapter rod on the central hinge of the binoculars.
- Unscrew the cap from the tripod adapter rod.
- Align the threaded hole on the adapter rod with the mounting screw on your tripod head.
- Securely fasten the binoculars to the tripod by turning the mounting screw clockwise until tight.

Figure 3: Binoculars securely mounted on a tripod, demonstrating the stability required for optimal viewการไอเอ็นจี
3.4 Adjusting Interpupillary Distance (IPD)
The interpupillary distance is the distance between the centers of your pupils. To adjust the IPD:
- Hold the binoculars up to your eyes and look through them.
- Move the two halves of the binoculars closer together or further apart until you see a single, clear circular field of view.
- Ensure the field of view is perfectly round without any dark edges.
3.5 Adjusting Diopter Setting
The diopter adjustment compensates for differences in vision between your left and right eyes. This adjustment is typically found on the right eyepiece.
- ปิดตาข้างขวาหรือปิดเลนส์วัตถุด้านขวาไว้
- มองผ่านช่องมองภาพด้านซ้ายด้วยตาซ้ายไปยังวัตถุที่อยู่ไกลออกไป
- Rotate the central focus wheel until the image is sharp and clear.
- ทีนี้ ลองปิดตาซ้ายหรือปิดเลนส์วัตถุด้านซ้ายดู
- Look through the right eyepiece with your right eye (do not touch the central focus wheel).
- Rotate the diopter adjustment ring on the right eyepiece until the image is sharp and clear.
- The binoculars are now adjusted for your eyes. You will only need to use the central focus wheel for subsequent focusing.
4. การใช้งานกล้องส่องทางไกล
4.1 การโฟกัส
Once the interpupillary distance and diopter are set, focusing is straightforward:
- Look through both eyepieces at your desired object.
- Rotate the central focus wheel until the image appears sharp and clear.
4.2 Adjusting Eyecups (Eye Relief)
The rubber eyecups can be folded down for eyeglass wearers. This allows eyeglass wearers to view ทั่วทั้งสนาม view. For non-eyeglass wearers, keep the eyecups in the up position to block stray light and provide comfortable viewการไอเอ็นจี

Figure 4: Close-up of an eyecup, which can be folded down for users wearing eyeglasses.
4.3 Viewเคล็ดลับ
- ดาราศาสตร์ Viewการลง: For observing celestial objects, find a dark location away from city lights. Allow your eyes to adapt to the darkness for at least 20 minutes. Start with wide-field views to locate objects, then use the binoculars for detailed observation.
- ภาคพื้นดิน Viewการลง: For long-range land-based viewing, ensure your binoculars are stably mounted. Scan the horizon slowly to locate points of interest. The large aperture is particularly useful in dim conditions like dawn or dusk.
วิดีโอ 1: ผลิตภัณฑ์จบview วิดีโอ. วิดีโอนี้ให้ภาพรวมทั่วไปview of the Celestron SkyMaster 20x80 Binoculars, highlighting their features and uses.
5. การบำรุงรักษา
5.1 การทำความสะอาดเลนส์
Proper cleaning of the lenses is crucial for maintaining optical performance. Use the provided lens cloth or a soft, lint-free cloth specifically designed for optics.
- Gently brush away any loose dust or debris from the lens surfaces using a soft brush or compressed air.
- Apply a small amount of optical cleaning fluid to the lens cloth (not directly to the lens).
- เช็ดพื้นผิวเลนส์เป็นวงกลม โดยเริ่มจากตรงกลางแล้วค่อยๆ เช็ดออกไปด้านนอก
- Avoid excessive pressure or rubbing, which can scratch the lens coatings.
5.2 การดูแลรักษาและการจัดเก็บทั่วไป
- Always replace the objective lens caps and rainguard when the binoculars are not in use to protect the optics from dust and scratches.
- Store the binoculars in their deluxe carrying case in a cool, dry place.
- Avoid exposing the binoculars to extreme temperatures or high humidity for prolonged periods.
- The rubber-armored housing provides protection against minor impacts and moisture, but the binoculars are not fully waterproof. Avoid submerging them in water.
6 การแก้ไขปัญหา
- ภาพเบลอ: Ensure the central focus wheel and diopter adjustment are correctly set for your eyes and the distance to the object. Check for condensation on the lenses.
- Double Image/Eye Strain: Re-adjust the interpupillary distance (IPD) until a single, circular field of view ได้สำเร็จแล้ว
- Unstable Image: These high-magnification binoculars require a stable platform. Ensure they are securely mounted on a sturdy tripod. Handheld viewing will result in noticeable shake.
- Reduced Brightness/Clarity: Check if lens caps are fully removed. Clean the objective and eyepiece lenses as described in the Maintenance section.
7. ข้อมูลจำเพาะ
| การขยายภาพ | 20 เท่า |
| เส้นผ่านศูนย์กลางเลนส์วัตถุ | 80 มม. |
| ประเภทปริซึม | บาเค-4 |
| การเคลือบด้วยแสง | เคลือบหลายชั้น |
| คุณสมบัติพิเศษ | ทนน้ำ |
| น้ำหนักสินค้า | 4.8 ปอนด์ (2.18 กก.) |
| ขนาดสินค้า | 9 x 4.7 x 0.04 นิ้ว (22.86 x 11.94 x 0.1 ซม.) |
| หมายเลขรุ่น | 71018 |
8. การรับประกันและการสนับสนุน
Your Celestron SkyMaster 20x80 Binoculars are backed by a Celestron Limited Lifetime US Warranty. This warranty covers defects in materials and workmanship for the lifetime of the product. For detailed terms and conditions, please refer to the warranty information provided with your purchase or visit the official Celestron webเว็บไซต์.
For technical assistance, troubleshooting, or any questions regarding your binoculars, please contact Celestron's US-based expert technical support team. Contact information can be found on the Celestron webไซต์หรือในเอกสารผลิตภัณฑ์ของคุณ
Video 2: Celestron SkyMaster Binoculars. This video provides additional insights into the SkyMaster series, including features and benefits.





