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Quickly Adapt Your APS-C View!
Quickly and easily change up your dedicated astronomy camera’s view into thenight sky with the ZWO EFW 7-Position Filter Wheel for 36mm Filters (2025)!Enhanced light leak protection, high capacity, and excellent compatibilitycombine in this iteration of the renowned ZWO EFW line. Give yourastrophotography rig a seven filter speed dial, with this 36mm filter wheeloffering!
Whether your system runs on monochrome or one-shot-color, the expansiveastrophotography filter landscape has something for you! If you’re looking tobuild out an APS-C imaging system, this filter wheel allows you to load upseven 36 mm unmounted filters for a more compact and value oriented systemcompared to the full-frame coverage 2″ options. Be ready for a wide variety ofperspectives with a color camera, or hold both LRGB and SHO filter sets foryour mono imaging option, all with the ZWO EFW 7-Position Filter Wheel for36mm Filters (2025)! This model pushes the previous generation forward, withimproved light leak protection and high performance stepper motor. Rotatingany of the seven filters into frame is easy, with ZWO’s renowned compatibilitymaking integration with your PC or ASIAir simple.
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Direct ZWO Camera and Pro Camera Integration
The ZWO EFW 7-Position Filter Wheel for 36mm Filters (2025) is designed tointegrate seamlessly with ZWO’s Pro cameras and ‘puck’ style cameras, eitheras a standalone accessory or in conjunction with the ZWO OAG-L. The filterwheel accomplishes this via passthrough holes on both front and back coversthat 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 toM48 internal threading adapter is included which connects the front cover withthe 16.5mm spacer included with most ZWO Pro cameras for an imaging train setat the industry standard 55mm of backfocus. The filter wheel additionallyfeatures M54 threading on the rear cover, which provides the flexibility tocreate imaging trains without a direct camera connection!
EFW Connected Directly to Camera w/o OAG-LEFW Connected Directly to Camera w/ OAG-LEFW Connected Directly to Camera w/ 1.25″ Connections
Pivot Your Perspective with Ease!
The ZWO EFW 7-Position Filter Wheel for 36mm Filters (2025) brings you simplecontrol of seven filters for a simpler, more streamlined, and automation-readyastrophotography system!
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Fast, Precise Filter Access
The ZWO EFW 7-Position Filter Wheel for 36mm Filters (2025) allows you to effortlessly swap seven filters into place without any disassembly in the field or hands-on access required. The internal seven position carousel accepts 36 mm unmounted filters between 1.9-3.5 mm thick, with solid retention to keep your filters firmly in place. This is driven by a high quality stepper motor for precise motion, long service life, and fast filter changes. The seven filter capacity is perfect for expansive filter collections, capable of carrying both the popular LRGB and SHO filter sets! The 36 mm filter size is well suited for APS-C dedicated astro cameras, bridging the gap between the common 1.25″ (too small) and 2″ (more coverage than required) size filters.
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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!
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Convenient Control
Controlling this filter wheel once installed is easy, with ZWO’s renowned compatibility bringing control to the vast majority of systems in use today! Connecting the ZWO EFW 7-Position Filter Wheel for 36mm Filters (2025) to your system is a USB type C port for easy setup even in darker environments thanks to its reversible nature. Native support through ZWO’s ASIAir system and ASCOM compatibility makes this quick to integrate and easy to control with today’s most popular devices and astrophotography software suites.
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Included Accessories
Included with the ZWO EFW 7-Position Filter Wheel for 36mm 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.
| Filter Slots: | 7 |
| Filter Sizes Supported: | 36 mm unmounted filters |
| Filter Thickness Supported: | Unmounted filters 1.9-3.5 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: | 515g |
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 |
