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AstroZap Off-Axis Glass Solar Filters

AstroZap Off-Axis Glass Solar Filters

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Estimated Arrival: Between Oct 10 and Oct 16. *ETA to USA Only

Shipping & Returns: Satisfaction guaranteed 30 day return policy.

Please see the "Size Matching Specifications" tab to determine the correct size filter for your telescope before ordering. 
These are safe off-axis solar telescope filters. An off-axis solar filter blocks light into the telescope by only allowing light through a small portion of glass that is off-center. By reducing the aperture the image is not darker but the visibility of daytime atmospheric turbulence is reduced. The off-axis is less expensive than the full aperture solar filters.

This premium solar filter has an aluminum cell that is secured and centered to the tube end of the telescope with nylon thumb screws and felt padding. The aperture portion of the filter is to be positioned as close to 12 o’clock as possible. The off-axis aperture is made with high-quality hand-selected and inspected reflective coated glass. This is the highest quality, most durable, off-axis aperture, glass solar filter on the market. The sun is viewed in a natural yellowish-orange image. The filter can be used for direct viewing through the telescope or for photography. You should be able to see sunspots, granulation, and of course a solar eclipse. 

This filter is new in the box in plastic. The filter box is foam-lined for protection and shock absorption during handling. It is durable enough to store the filter while not in use. With the filter come instructions for use and care.

Size Matching Specifications


Your O.D. Measurement

Telescopes that Fit this Filter Size


8 13/16” (224mm) to 9 1/16” (230mm)

Celestron 8” and Meade 8”  Schmidt-Cassegrain; Celestron:  C8, C8+, Celestar 8, NexStar 8/8i/8SE, CPC800, CGE-800; Meade 8”: 2080, LX5, LX6, Premier, LX10, LX50, LXD-55, LXD-75, LX200, LX200R, LX200 GPS, LX90 GPS 8”; Discovery DHQ 6” Dob; Takahashi:  Epsilon-180ED; Vixen:  R200SS, VC200L, VMC200L, VMC260L


9 1/8” (232mm) to 9 3/8” (238mm)

Celestron: C8 / Newt.; Newstar 8” Dobsonians; Orion: SkyQuest XT8, Atlas 8, SkyView Pro 8, Orion Sky Watcher


9 3/8” (238mm) to 9 5/8” (244mm)

Meade Starfinder 8"; Orion 8" DSE



9 5/8” (244mm) to 9 7/8” (251mm)

Meade LXD-55 8" S/Newt, Meade 7 APO; Takahashi 212


10 1/8” ( 257mm) to 10 3/8” (264mm)

Coulter 8"; Skywatcher 8” Reflector; Takahashi Epsilon 180 ED


10 3/8” (264mm) to 10 5/8” (270mm)

Celestron 9 ¼ S-C, Celestron StarHopper 8" Dobsonian


11 1/8” (283mm) to 11 3/8” (289mm)

Celestron 10" Newt; Orion SkyWatcher 10"



11 5/8” (295mm) to11 7/8” (302mm)

Fits all Meade 10" Schmidt-Cassegrain’s: Meade 10" LX200 Series, Meade LXD-55 10" S/ NEWT, Meade LX90 GPS 10”, RCX 400 10”


12 1/8” (308mm) to 12 3/8” (314mm)

Celestron: C11 SCT, 10" Dobsonian; Orion: SkyQuest XT10, Atlas 10; OPT’s Starhunter 10” Dobsonian



12 5/8” (321mm) to 12 7/8” (327mm)

Meade Starfinder 10; Coulter 10”; Takahashi:  FRC300, Mewlon 300


13 3/8” (340mm) to 13 5/8” (346mm)

Meade 12" Schmidt-Cassegrain’s: LX200 Series 12”, LX90 GPS 12”, RCX 400 12”


14 7/8” (378mm) to 15 1/8” (384mm)

Orion 12.5"; 12” Dobs Zhumell


15 3/8” (391mm) to 15 5/8” (397mm)

Celestron 14" SCT


15 5/8” (397mm) to 15 7/8” (403mm)

Meade 14" Schmidt-Cassegrain’s: 14” LX200 Series, RCX 400 14”



We know that once you've placed your order, you are anxious to receive it! We make every effort to get your order shipped out to you as quickly as possible.

As soon as you place your order, you will receive an order confirmation e-mail. This means that we have received your order in our system and pre-authorized your credit card for the purchase. We will process the charges to your credit card and your order will ship within five business days from the date of your order. We will send you tracking information within 24 hours of your order leaving the warehouse to the e-mail address you provided when checking out.  If you do not receive tracking information from us within six business days of your order, feel free to follow up with us at

Standard shipping time in the US is between 3-5 business days, though it can vary slightly depending on the destination. We typically For updates on your shipment you can enter your tracking number here.

We distribute nationwide via UPS and Fedex. Unfortunately, at this time we are not able to provide expedited or international shipping.  

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