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ZWO 7 Position Electronic Filter Wheel for 2" Filters (2025)

SKU: ZWO-EFW-7X2-25
(8 Available)
Free shipping
$399.00

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Seven Filter Speed Dial!

Cut through light pollution, hone in on detail, and create vibrant color images with the ZWO 7 Position Electronic Filter Wheel for 2" Filters (2025)! With seven speed-dial slots for your 2" filters, you can be ready for broadband and narrowband images alike without having to change a thing. If a premium high capacity electronic filter wheel is what you're after, ZWO has the solution for you!

Astrophotography filters are an incredible way to increase contrast, hone in on detail, and even create color images with a monochrome camera. With the ZWO 7 Position Electronic Filter Wheel for 2" Filters (2025), you can have up to seven of these image enhancing accessories on tap for quickly dialing in the right filter for the job! Create full color or narrowband images without equipment swaps, or load in your own custom assortment and dial in the perfect filter for the night and target right from your computer. This generation takes ZWO's excellent filter wheel support and compatibility and adds improved light leak protection for an enhanced take on their already incredible implementation!

Direct ZWO Pro APS-C and Full-Frame Camera Integration

The ZWO 7 Position Electronic Filter Wheel for 2" Filters (2025) is designed to integrate seamlessly with ZWO's APS-C and Full-Frame cameras, either as a standalone accessory or in conjunction with the ZWO OAG-L. The filter wheel accomplishes this via passthrough holes on both front and back covers that allow cameras and the OAG-L to be screwed directly to these components. For those looking to add a filter wheel without the OAG-L, an M54 external to M48 internal threading adapter is included which connects the front cover with the 16.5mm spacer included with most ZWO Pro cameras for an imaging train set at the industry standard 55mm of backfocus. The filter wheel additionally features M54 threading on the rear cover, which provides the flexibility to create imaging trains without a direct camera connection!

Capacity and Convenient Control!

The ZWO 7 Position Electronic Filter Wheel for 2" Filters (2025) brings you simple control of up to seven filters for simpler, more streamlined, and automation-ready astrophotography!

Fast, Precise Filter Access
This filter wheel gives you easy access to up to seven astrophotography filters, giving you plenty of capacity for multiple palettes (such as both of the popular mono camera LRGB and SHO sets) or an on tap array of unique filters. It accepts the common 2" mounted thread-in style filters up to 7 mm tall and 50 mm filters between 1.5 mm - 3.5 mm thick, for wide compatibility with today's incredible filter options. This filter size is perfect for pairing with camera sensor sizes up to full-frame, allowing you to bring this filter swap simplicity to the most popular astro cameras. Each position is quickly, precisely, and silently slotted into place, thanks to the new stepper motor and design!

Stray Light Shield
With this generation of ZWO filter wheel comes added light leak protections to turn your filter wheel into a stray light stronghold! The redesigned housing closure now features a slot-style closure and sealed motor compartment to eliminate the possibility of light slipping through a small gap in the two sections. To prevent light sneaking by in a bolt-through configuration, new light blocking pads replace the masks for easier installation and a light-tight seal!

Convenient Control
Connecting the ZWO 7 Position Electronic Filter Wheel for 2" Filters (2025) with your PC or wireless control solution is simple! Connectivity is established with the USB-C port. With ASCOM drivers and support integrated directly into ZWO's own ASIAir system, this filter wheel is compatible with the vast majority of astrophotography software suites and control devices in use today. This means most users can initiate filter changes or even plan out filter sequences in advance through their preferred device and software combo!

Included Accessories
Included with the ZWO 7 Position Electronic Filter Wheel for 2" Filters (2025) is a host of accessories that will help get your system up and running right out of the box! For imaging train connections, an M48 to M54 step-up ring, M54M-M42F adapter, and M54M-M48F adapter are included; with 0.5 M and 2 M USB A to USB C cables included for power and data. Two sets of screws, 6x M2.5-6, 26x M2-4, and one 10x filter mask set are included for bolt-through camera connections and unmounted filter installation. To additionally make assembly easy right out of the box, a Philips head screwdriver has been included.

ZWO EFW Specifications
Filter Slots: 7
Filter Sizes Supported: 2" mounted thread-in filters, 50 mm unmounted filters
Filter Thickness Supported: Mounted filters under 7 mm in height (above threading); Unmounted filters 1.5-3.5 mm thick
Back Spacing Added By Filter Wheel: 20mm
Front Connection: M54, ZWO OAG-L direct connection holes
Rear Connection: M54, ZWO camera direct connection holes
External Power Required? No
Data Interface: USB-C
Weight: 720g

Astronomy Hub: Your one-stop-shop for Astrophotography Knowledge!

Our Gear Experts have compiled a wealth of information to help expand your astrophotography knowledge! Below you’ll find links to articles, videos and "how-to" guides. Just one more reason that our Astronomy Hub is a one-stop-shop for all your astronomy and astrophotography needs!

Combining Narrowband Data in Pixinsight
ZWO ASIAir Ultimate Guide