Sky Watcher Mercury 707 Telescope
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Product Information
Full details
The Sky-Watcher Mercury-707 is an ideal entry-level refractor telescope for hobbyists and beginners interested in both celestial and terrestrial observation. It provides high-contrast views of the moon, planets, and brighter deep-sky objects through its multi-coated 70mm lens, though its manual alt-azimuth mount requires patience for tracking objects as they move across the night sky.
All features
| Brand | Sky Watcher |
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Extended Product Information
FAQs
Can I use this for bird watching?
Yes, it functions well for terrestrial viewing, though at high magnifications, the field of view is narrow and the image may appear inverted depending on your diagonal configuration.
How do I calculate the magnification?
Divide the telescope's focal length (700mm) by the focal length of the eyepiece (e.g., 700/25 = 28x magnification).
Does this telescope need to be collimated?
Refractors like the Mercury-707 are generally factory-aligned and hold their collimation well, rarely requiring user intervention.
Can I connect a camera to this telescope?
Yes, with a universal T-adapter and a T-ring specific to your camera brand, you can perform basic lunar and planetary astrophotography.
What is the maximum useful magnification?
The theoretical maximum is roughly 140x, though image quality will be sharpest at lower to medium power settings.
Troubleshooting
The image is blurry or out of focus.
Ensure the focus knobs are adjusted slowly. If using the 2x Barlow lens, note that higher magnifications make focusing more sensitive.
Objects drift out of the field of view quickly.
This is normal for a manual alt-azimuth mount. Practice small, frequent adjustments to the altitude and azimuth axes to keep the object centered.
I see a reflection of the diagonal mirror.
Ensure the eyepiece is firmly seated in the star diagonal and the diagonal is securely locked into the focuser drawtube.
Pros and Cons
Pros
- Excellent optical clarity for the price point
- Versatile for both night sky and daytime nature viewing
- Lightweight and highly portable design
- Standard 1.25-inch eyepiece compatibility allows for future upgrades
Cons
- Manual mount lacks motorized tracking capabilities
- Requires manual adjustment to keep objects in view at high magnification
- Tripod can feel shaky at maximum magnification levels
Setup, Compatibility & Care
Setting up the Mercury-707 is straightforward: attach the optical tube to the mount head and extend the tripod legs to your preferred height. Ensure the mount tension knobs are adjusted to allow for smooth movement without being too loose.
Regarding compatibility, the 1.25-inch focuser allows you to use a wide variety of aftermarket eyepieces and filters. To care for your telescope, always replace the lens cap when not in use to prevent dust accumulation. If the objective lens requires cleaning, use only specialized optical cleaning solution and a microfiber cloth; never rub the lens with dry paper towels or household cloths, as these can scratch the multi-coatings.