TelescopesPlus - The #1 Online Store for Telescopes and Accessories

Explore Scientific 1.25" CLS Filter - 310225

Explore Scientific 1.25" CLS Filter - 310225 - Main image
$73.69 $109.99 In stock

Category: Telescope Accessories

Explore Scientific 1.25" CLS Filter

This Explore Scientific CLS Filter is a light pollution reduction filter designed for general use. This filter will help you observe many deep-sky objects without pesky light pollution. This will increase contrast for optimal views of the night sky.

The Explore Scientific 1.25" CLS Filter has a transmission of 98.3% from 436nm to 536nm. Peak transmission is 488nm. This filter is mounted in a 1.25" metal cell and fits all standard 1.25" eyepieces and filter wheels.

Completing your purchase

Take a moment to review your selection and total before payment.

Preparing your order

Please consider both preparation and transit when planning your purchase.

Standard Shipping: Handling (business days) 0–1; Transit (business days) 7–15.

Express Shipping: Handling (business days) 0–1; Transit (business days) 7–15.

View policy
Requesting a refund

Contact the store with your order details so your request can be reviewed.

Please contact us for the refund processing timeframe before returning an item.

View policy
Delivery arrangements

The available delivery services and charges are listed below.

Standard Shipping · United States: $0.00

Express Shipping · United States: $3.99

View policy
Before arranging a return

Speak with the store before arranging a return shipment.

United States · Return window (days after delivery): 30. Return method: By mail. Return postage: Seller pays.

View policy

Customer Reviews (4.8 / 5 · 5 reviews)

Riley J. ★★★★★

Finally, I can actually make out details in the Orion Nebula from my suburban backyard, even with the nearby streetlights blazing. The difference this CLS filter makes in cutting the orange glow is dramatic.

Michael V. ★★★★★

The CLS filter threads smoothly into my 1.25" eyepiece and immediately cuts through the orange glow from streetlights, making nebula details pop out more clearly than I expected.

Miles R. ★★★★★

The glow from streetlights used to wash out every faint galaxy, but with this CLS filter slipped into my eyepiece, the contrast on nebulae is noticeably better. It threads on smoothly and feels solidly built, so I’ve been leaving it in for most of my viewing sessions now.