Description
Kowa TSN-88S Body Only PROMINAR 88mm Straight Spotting Scope features a reinforced magnesium alloy body, providing enhanced durability while significantly reducing weight. The lens system incorporates advanced multi-coated and KR coated convex lenses, which improve light transmission, ensuring vibrant and natural color reproduction during your observations. With a newly designed filter thread located at the front of the objective lens, users can benefit from reduced glare and improved shading, particularly when using the lens hood. A multi-screw QR plate enhances stability for secure mounting.
This spotting scope supports a dual focusing system, allowing for precise adjustments for quick and accurate viewing. The 88mm objective lens diameter is ideal for long-range observations, making it suitable for birdwatching, wildlife observation, and tactical training. Please note that this is the body only; eyepieces must be purchased separately for optimal performance, with recommended options including the Kowa 25-60x Wide Zoom Eyepiece or the Kowa 25x Long Eye Relief Eyepiece.
Key Features:
- DURABLE CONSTRUCTION made from reinforced magnesium alloy for lightweight and rugged use in the field.
- ENHANCED LIGHT TRANSMISSION through advanced multi-coated and KR coated lenses for brighter, clearer images.
- REDUCED GLARE with the relocated filter thread to improve shading and visual comfort.
- STABLE MOUNTING options with a multi-screw QR plate for secure attachment to tripods.
- DUAL FOCUSING SYSTEM allows for quick and precise adjustments for optimal viewing.
- WATERPROOF & FOG-PROOF ensures reliability in various weather conditions.
- CLOSE FOCUS CAPABILITY of 16.4 feet for detailed observation of nearby subjects.
- 10-YEAR WARRANTY reflects the brand's confidence in quality and durability.
Technical Specifications
| Specification | Details |
|---|---|
| Objective Lens Diameter | 88 mm |
| Weight | 64.8 oz. |
| Length | 13.4 in. |
| Close Focus | 16.4 ft. |
| Magnification | Depends on eyepiece used |
| Field of View | Depends on eyepiece used ft. at 1000 yds. |
| Eye Relief | Depends on eyepiece used |
| Body Only | Yes |
| Included Accessories | None |
What's in the Box?
- Body Only (Eyepiece sold separately)
Customer Reviews
“Incredible clarity and brightness. Perfect for birdwatching!”
“Lightweight and durable. A great investment for long-range viewing.”
“The dual focusing system is a game changer for quick adjustments.”
FAQ
What eyepieces are compatible with the Kowa TSN-88S? The Kowa TSN-88S is compatible with various eyepieces, including the Kowa 25-60x Wide Zoom Eyepiece and the Kowa 25x Long Eye Relief Eyepiece, allowing for versatility in magnification and comfort.
How does the waterproof feature perform in real conditions? The Kowa TSN-88S is nitrogen-filled and fully waterproof, ensuring reliable performance even in wet weather or humid environments, making it suitable for all outdoor adventures.
Can this scope be used for long-range shooting? Yes, the 88mm objective lens and high-quality optics make the Kowa TSN-88S an excellent choice for long-range observation and tactical training, providing clear and precise images at extended distances.
Similar Models
Looking for more options? Explore our complete lineup of Kowa spotting scopes, including models like the Kowa TSN-99A for enhanced performance and the Kowa TSN-82SV for a compact design. Each model is crafted to meet the needs of outdoor enthusiasts and professionals alike.
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Optics Knowledge Center
Understanding Rifle Scope Basics
Magnification
Magnification refers to how much larger an object appears through the scope compared to the naked eye. Fixed power scopes have one magnification setting, while variable power scopes offer a range (e.g., 3-9x).
Objective Lens
The objective lens is the front lens that gathers light. Larger objective lenses (measured in mm) gather more light, providing brighter images in low-light conditions but add weight and require higher mounting.
Reticle
The reticle (crosshair) is the aiming point inside the scope. Modern scopes offer various reticle designs, from simple duplex crosshairs to complex ballistic reticles with holdover points for different distances.
Adjustments
Rifle scopes have turrets for windage (horizontal) and elevation (vertical) adjustments. These are measured in MOA (minutes of angle) or MRAD (milliradians) and allow precise aiming adjustments.
Proper Scope Mounting Guide
Select the Right Rings & Base
Choose rings that match your scope's tube diameter (typically 1", 30mm, or 34mm). Select a base compatible with your rifle's receiver. For heavy-recoiling rifles, opt for stronger mounts.
Install the Base
Clean the receiver and base thoroughly. Apply a small amount of blue Loctite to the screws. Attach the base to the receiver and torque the screws to manufacturer specifications.
Attach the Rings
Attach the bottom halves of the rings to the base. Place the scope in the rings and loosely attach the top halves. Don't fully tighten yet.
Set Eye Relief & Level
Position the scope for proper eye relief (3-4 inches) in your normal shooting position. Ensure the reticle is level using a scope leveling tool. Once positioned correctly, tighten the rings evenly in a cross-pattern.
Scope Zeroing Tips
Start Close
Begin zeroing at a shorter distance (25-50 yards) to ensure you're on paper before moving to your desired zero distance (typically 100 yards).
Use a Stable Rest
Always zero your rifle from a stable shooting position using a bench rest, sandbags, or a shooting rest to eliminate as much human error as possible.
Fire Groups
Fire 3-shot groups before making adjustments. This provides a more accurate representation of where your rifle is shooting than single shots.
Make Deliberate Adjustments
Know your scope's adjustment values (typically 1/4 MOA per click). If your group is 2 inches low at 100 yards, you'll need to adjust up 8 clicks (for a 1/4 MOA scope).
Confirm Your Zero
After making adjustments, fire another group to confirm your zero. Repeat the process until your point of impact matches your point of aim.
Document Your Settings
Once zeroed, record your settings including distance, ammunition used, and environmental conditions for future reference.
Optics Maintenance & Care
Cleaning Lenses
- Start by blowing or brushing away loose particles
- Use a lens pen or microfiber cloth for fingerprints
- For stubborn dirt, use lens cleaning solution (never household cleaners)
- Clean with gentle circular motions from center outward
Protecting Your Optics
- Always use lens caps when not in use
- Store in a dry place with silica gel packets
- Avoid extreme temperature changes
- Use a quality scope cover in harsh conditions
Regular Maintenance
- Check and tighten mount screws periodically
- Inspect O-rings and seals for damage
- Verify zero after rough handling
- Clean the exterior with a damp cloth
What to Avoid
- Never use fingers to touch lenses
- Avoid paper products (tissues, paper towels) on lenses
- Don't use acetone, alcohol, or household cleaners
- Never disassemble your scope (voids warranty)