Skip to content

📦FREE SHIPPING FOR ORDERS OVER $500* Some exceptions may apply

💲Buy Now, Pay Later. Learn more

Shop Brands FAQ

Country/Region

Canada (CAD $)

Language

English
Français

Search

Product type

Search Log in Basket

Brands 🏷️
Telescopes 🔭
Cameras 📷
Mounts 🔩
Accessories ⚙︎
Imaging Accessories 🌌
Filters 🪐
Nature & Science🔬
Space & Science for Kids 🧸
Used 💫
PROMOTIONS 💥
Community 🗣
Contact 📞

Gift-Cards🎁
Rental🔭
Contact us

Free & Fast Shipping

For Orders +$500 in Canada*
Trusted by Astronomers

Family Owned Since 1988
Find a Better Price?

We Will Match it*
Advice & After Sale Support

Astronomers Available for Help

72h Flash Sale!

5% Off almost everything* to celebrate our new website interface

FLASHSALE72

Copied

Home
Filters

Filters

(397 products)

An astronomical filter is a telescope accessory consisting of an optical filter used by amateur astronomers to simply improve details and contrast.

Sort by

Featured
Most relevant
Best selling
Alphabetically, A-Z
Alphabetically, Z-A
Price, low to high
Price, high to low
Date, old to new
Date, new to old

Compare

View as List Grid

The wait is over! Check our the ZWO AM7🔥
ZWO delivers a mount built to handle serious payloads 💪

👉 Time to think bigger 🔭

Get Yours Now
Compare

Daystar
Daystar Solar Eclipse Glasses (Certified ISO-12312-2)

(26)

Regular price $6⁰⁰

Backordered

View details
Compare

Daystar
Daystar White Light ULF - Universal Solar Filters

(6)

Regular priceFrom $24⁰⁰

In stock

View details
Compare

Svbony
SVBONY 1.25"/2'' Variable Polarizing Filters for Eyepieces

(4)

Regular priceFrom $25⁰⁰

In stock

View details
Compare

Thousand Oaks
Thousand Oaks Full Aperture Solar Filters Solarlite Polymer

(3)

Regular priceFrom $83⁰⁰

In stock

View details
Compare

Celestron
Celestron Eclipsmart Universal Solar Filter 75 to 100mm (44428)

Regular price $30⁰⁰

In stock

View details
Compare

Seymour solar
Seymour Helios Solar Glass Telescope Filter

(3)

Regular priceFrom $136⁰⁰

In stock

View details
Compare

Sold out

Thousand Oaks
Thousand Oaks Threaded Camera Filters

(4)

Regular priceFrom $69⁰⁰

View details
Compare

Antlia
Antlia SHO 3nm Narrowband PRO Filters

(1)

Regular priceFrom $362⁰⁰

In stock

View details
Compare

Optolong
Optolong UV/IR CUT filter

(5)

Regular priceFrom $61⁰⁰

In stock

View details
Compare

$82.00 off

Astrozap
Astrozap Full Aperture Solar Filter (391-397mm)

(4)

Sale price $270⁰⁰ Regular price $352⁰⁰

Very low stock (1 unit)

View details
Compare

Antlia
Antlia LRGB-V Pro Filters

Regular priceFrom $426⁰⁰

In stock

View details
Compare

ZWO
ZWO UV/IR Cut Filter

(1)

Regular priceFrom $40⁰⁰

In stock

View details
Compare

Up to $59.00 off

Svbony
Svbony SV220 7nm Dual-Band Nebula Filter Ha & OIII

(3)

Sale priceFrom $104⁰⁰ Regular price $156⁰⁰

In stock

View details
Compare

Antlia
Antlia Quad Band Anti-Light Pollution Filter 2" Mounted (QUAD-2)

Regular price $281⁰⁰

In stock

View details
Compare

Up to $127.00 off

Optolong
Optolong L-Pro Filter

Regular priceFrom $208⁰⁰

In stock

View details

Showing 15 of 397

Your cart

Your cart is empty

Subtotal:$0⁰⁰ CAD

Loading...

Since 1988, Astronomy Plus has been a trusted Canadian source for telescopes, astrophotography equipment, and optics. We provide expert advice, quality products, and fast shipping across Canada.

📍3008 Brodeur West , Unit 307
St-Alphonse-de-Granby, Quebec, Canada
J0E 2A0

📞 450-463-5072 / 1-888-540-0444

✉️ info@astronomyplus.com

🕒 Business Hours (ET)

Monday: 10:00 - 16:00

Tuesday – Wednesday: 10:00 - 17:00

Thursday - Friday: 10:00 - 17:30

Saturday: 10:00 - 16:00

Sunday : Closed

Expert Help 🕿

🔗 Quick Links

Search 🔍
Telescopes 🔭
Mounts 🔩
Cameras 📷
Binoculars 🦤
Accessories ⚙︎
Sales 🏷️
Blogs 📝

Customer Service

Refund & Return Policy 🔄
Price Match ✅
Buy Now, Pay Later 💲
PayPlan by RBC Financing Page 💲
Shipping Informations ⛟
Product Warranties 🛡️
Pricing Disclaimer 🏷️
Privacy Policy 🔒
About Us ℹ️
FAQs ❓

Become Part of the AstroFamily

Sign up today and receive $15 OFF your next purchase.

Plus, unlock exclusive offers, early access to new gear and promotions, and expert advice.

Email

Payment methods accepted

Country/Region

Canada (CAD $)

Language

English
Français

© 2026 Astronomy Plus – Telescopes & Astrophotography Canada. Powered by Shopify

Compare /5

Loading...

Loading...

Choose options

Item added to your cart.

View cart

David W Vandenberg

Excellent Service

Products as described, arrived 3 days before due date.
This is a great deep sky scope, and I am looking forward to getting some great pictures with it, all I need now are some clear skies (it's raining at the moment)

SVBONY SV545 Petzval Astrograph 203mm Lens F/4.5 (W9317B)

Emilio Youssef

Very sturdy and better than

Very sturdy and better than expected!

Astronomy Plus Pier Extension for ZWO, iOptron and Sky-Watcher Mounts

Claude Lamarre

ASTRONOMIK MC CLEAR FILTER 2’’ SCT 24 TPI Se visse directement sur l’adaptateur 2’’ SCT 24 TPI

ASTRONOMIK MC CLEAR FILTER 2’’ SCT 24 TPI

Se visse directement sur l’adaptateur 2’’ SCT 24 TPI , votre dos visuel se visse sur le ASTRONOMIK MC CLEAR FILTER 2’’ SCT 24 TPI.

1) Permet de sceller le tube optique. Une touche de graisse de silicone pure, de qualité, celle pour les équipements de plongée assure l’étanchéité.

2) Empêche les contaminants de s’infiltrer

3) Empêche l’effet cheminée lorsqu’on change un oculaire ou un accessoire par temps froids.

4) Combiné à une isolation thermique de l'OTA un isolant thermique à double face genre REFLECTIX, permet de sortir l’instrument d’un local chauffé vers la température frigide extérieure pour observer immédiatement sans attendre l’équilibrage des températures.

J’ai testé de 25C à 5C, sur deux nuits à l’oculaire clavé 10mm dès l’installation 5 minutes après la sortie de l’instrument, l’image est absolument nette avec seulement la turbulence d’un seeing de 3-4, et ce durant toute la durée de la séance.

Images de Saturne au MK127 de SVBONY F:1500mm, Caméra ZWO ASI 678MC au foyer primaire, Filtre 1.25" Baader contrast boost, capture .SER, Sharpcap, PIPP, AS4!, registax 6.

Les photos sont un stack des images brutes stabilisé de PIPP, et l'autre un léger traitement dans Registax 6.

Le 27 octobre vers 21h30 5 à 10 minutes après avoir sorti l’instrument, viewing 3/5. Hier avec barlow QT 2,25x Baader, résultat similaire. C'est ce que j'espérait, les tests se poursuivre.

Astronomik MC-clear Filter

Darus

Helpful staff and competitive pricing make them a solid choice

Astronomy Plus is a reliable Canadian retailer specializing in telescopes and astrophotography gear.

Their product selection is excellent — everything from smart telescopes like the Seestar series to mounts, cameras, filters, and accessories from top brands. Items arrive in perfect condition and are well-stocked.

Shipping is impressively fast!

Astronomy Plus – Telescopes & Astrophotography Canada

Darus

Beautiful results without the complexity of traditional gear.

The ZWO Seestar S30 Pro is a compact, user-friendly smart telescope that makes deep-sky astrophotography surprisingly accessible. Its 30mm quadruplet APO optics and dual Sony sensors (IMX585 + IMX586) deliver sharp 4K images of nebulae, galaxies, and the Milky Way with minimal effort. Setup takes minutes: point it, select a target in the app, and it handles focusing, tracking, and stacking automatically. Ideal for beginners and casual imagers who want beautiful results without the complexity of traditional gear. Highly recommended.

ZWO Seestar S30 PRO All-in-One APO Smart Telescope (S30PRO)

★ Reviews

Let customers speak for us

88%

(1683)

8%

(154)

2%

(33)

1%

(15)

1%

(18)

A

Losmandy D Series 14" Universal Dovetail Plate (DUP14)

Artur Fernandes

Fits perfectly my Fluorostar

Fits perfectly my Fluorostar 91

D

SVBONY 1.25" Right Angle Mirror Diagonal (F9171A)

David W Vandenberg

As described

As described, arrived 3 days before due date. Much better diagonal than the one that came with the scope.

D

SVBONY SV545 Petzval Astrograph 203mm Lens F/4.5 (W9317B)

David W Vandenberg

Excellent Service

Products as described, arrived 3 days before due date.
This is a great deep sky scope, and I am looking forward to getting some great pictures with it, all I need now are some clear skies (it's raining at the moment)

E

Astronomy Plus Pier Extension for ZWO, iOptron and Sky-Watcher Mounts

Emilio Youssef

Very sturdy and better than

Very sturdy and better than expected!

G

Sky-Watcher Wave Counterweight Kit (S30914)

Ghislain Lemonde

Adapté à la monture

Adapté à mon besoin