Kowa TSN-AS1.25K Astro Adapter for TSN-99/88/66 Series
- 1.25" astro eyepiece compatibility for expanded night-sky viewing options
- Knurled screw fixing allows fast, secure eyepiece changes
- Designed for TSN-99, TSN-88, and TSN-66 PROMINAR spotting scopes
- Lightweight and travel-friendly for portable astronomical use
- Works with Kowa EX16 1.6x extender for deep-space viewing potential
- Dual-purpose versatility for both terrestrial and astronomical observation
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Expand the capabilities of your Kowa PROMINAR TSN-99, TSN-88, or TSN-66 spotting scope with the TSN-AS1.25K Astro Adapter. Designed with a convenient knurled screw fitting, this adaptor allows the use of standard 1.25" astronomical eyepieces, transforming a premium terrestrial scope into a compact and versatile tool for night-sky observation. Ideal for travellers and outdoor enthusiasts who want to enjoy both daytime viewing and astronomy without carrying bulky equipment, it offers seamless compatibility, quick eyepiece changes, and exceptional optical performance when paired with Kowa’s fluorite crystal scopes. Lightweight, portable, and reliable, the TSN-AS1.25K opens up a world of viewing possibilities.
- Compatibility: TSN-99 / TSN-88 / TSN-66 PROMINAR spotting scopes
- Eyepiece Fitting Size: 1.25"
- Fixing Type: Knurled screw
1.25" Astronomy Compatibility – Accepts standard 1.25" astro eyepieces and accessories for greater flexibility in night-sky viewing.
Knurled Screw Fixing Mechanism – Comfortable, tool-free handling allows quick and secure eyepiece exchange.
Premium Scope Integration – Engineered exclusively for TSN-99/88/66 PROMINAR spotting scopes for a precise optical fit.
Portable Dual-Purpose System – Converts a compact spotting scope into an astronomy-ready setup, reducing the need for bulky telescopes when travelling.
Extended Viewing Potential – Compatible with the Kowa EX16 1.6x extender to increase magnification for deep-space targets.
Optimised Optical Performance – Designed to pair with fluorite crystal scopes that significantly reduce chromatic aberration for clearer night-sky detail.
- Kowa TSN-AS1.25K Astro Adapter for TSN-99/88/66 Series
- 2x knurled screws
- Kowa 2 Year Warranty
Please Note: Shipping charges may be subject to additional surcharges if out of area or over weight restrictions.
Please Note: DPD SHIPMENTS REQUIRE THE CUSTOMER TO SHOW A PIN CODE ON DELIVERY - READ MORE: HERE
COURIERS
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We use DPD , RoyalMail, TNT and UPS courier services for all our orders whether dispatching to the UK or International. As soon as your order has been dispatched you will receive an email with your unique tracking number.
IN-STORE ITEMS
These are items that we have in-stock and will be sent out for delivery as soon as possible. We aim to dispatch all orders within 1-2 working days, but during busy periods dispatch may be delayed by a day or so. If you would like to purchase the item in person then please call ahead to arrange an appointment: 01803 611 895.
PRE-ORDER ITEMS
These are usually items that are going to be out-of-stock for a number of weeks or are in short supply. By purchasing a Pre-Order Item you are in effect paying a deposit for your goods. As soon as the item is back in stock yours will be dispatched within 24 hours where possible. Please see individual product pages for current back-in-stock dates. In rare occasions, these dates can be changed by the manufacturers so we recommend staying in contact with Optics Warehouse depending on the product lead time.
INTERNATIONAL DELIVERY & TAXES
In addition to the above information If your delivery address is outside of the UK you may be subject to import duties and taxes, which are levied once a shipment reaches your country. Any such additional charges for customs clearance must be borne by you. You should note that customs policies vary widely from country to country. Optics Warehouse advises each customer to contact their local customs office for further information if they are in any way unsure of local duties or liabilities. Cross border shipments are subject to opening and inspection by customs authorities which means some packages may be opened and re-sealed.
NEED HELP?
If you require any further assistance, please call us on 01803 611 895 or email sales@opticswarehouse.co.uk
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A NOTE ABOUT DPD SHIPMENTS:
- Please be advised that we have now introduced DPD Pins to all DPD orders from Optics Warehouse.
- If your shipment is being sent from Optics Warehouse via DPD you will be sent a Pin Code that must be shown to the courier upon delivery.
- The pincode is sent VIA email & TEXT message. A valid email address and mobile number must be provided at checkout. Emails will be sent from "Riviera House 3PL" - if you do not receive this email please check your junk or spam folders.
- Please note that if you do not display your pin code to the courier driver upon delivery, you will not be able to have your item and you may need to schedule another delivery date to show a valid pin.
- Please view the attached slides HERE for further information!