ZWO EFW 8-Position Filter Wheel for 1.25" and 31 mm Filters (2025)
A Next Generation High Capacity Solution
Never be without the right filter, with this expansive filter wheel from ZWO! Capable of carrying an incredible eight 1.25" astrophotography filters with tried-and-true driver support and a next generation light leak design, this accessory will make an excellent addition to your system. Bring the ZWO EFW 8-position Filter Wheel for 1.25" and 31 mm Filters (2025) to your build today!
With the wide variety of incredible astrophotography filters on the market today, it has never been easier to gain new and unique takes on deep sky objects. With a massive eight position filter wheel, the ZWO EFW 8-position Filter Wheel for 1.25" and 31 mm Filters (2025) ensures you have plenty of room for your favorite image enhancing accessories! Supporting the common 1.25" filter size as well as 31 mm unmounted filters, this is the perfect companion for small sensor monochrome and color cameras alike. ZWO has pushed their previous generation forward, with this model sporting their tried-and-true software and hardware compatibility alongside new light leak protections and a high performance stepper motor. This makes dialing in the perfect filter for your current target or creating complex filter change sequences ahead of time a snap, ensuring you're always ready to bring your astrophotography ideas into reality!
Easy Imaging Train Integration
Whether you're looking to install this in a visual back setup or fully threaded optical train, the ZWO EFW 8-position Filter Wheel for 1.25" and 31 mm Filters (2025) has you covered! Included in the box are adapters that work in combination with ZWO camera packages to install the filter wheel and your Pro cooled or uncooled camera; simply follow the system chart below to create either a 1.25" imaging setup or a threaded train set around the industry standard backfocus. This will work with cameras designed with similar native backspacing to ZWO cameras, just note that you may need to source some of the spacers/ adapters separately.
Eight Filter Speed Dial!
The ZWO EFW 8-position Filter Wheel for 1.25" and 31 mm Filters (2025) brings you simple control of eight filters for a simpler, more streamlined, and automation-ready astrophotography system!
Fast, Precise Filter Access
The ZWO EFW 8-position Filter Wheel for 1.25" and 31 mm Filters (2025)
allows you to quickly prepare for your next target and sequence, with a
large capacity and precision motor! The eight position internal carousel can
accommodate 1.25" mounted filters less than 7 mm thick, and 31 mm unmounted
filters between 1.5-3.6 mm thick. This allows you to cover the host of high
quality small sensor cameras today, and carry both the popular LRGB and SHO
astrophotography filter sets with room to spare for a dark filter! These
filters are smoothly, silently, and precisely slotted into place with a
stepper motor.
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
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 8-position Filter Wheel for 1.25" and 31 mm 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.
Included Accessories
Included with the ZWO EFW
8-position Filter Wheel for 1.25" and 31 mm 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 M42M-M42M (T2-T2) adapter, 1.25"
nosepiece, and rear 1.25" compression fitting are included; with 0.5 M and 2
M USB A to USB C cables included for power and data. Three sets of screws,
6x M2.5-6, 26x M2-4, 2x M4-12, and one 10x filter mask set are included for
bolt-through camera connections and unmounted filter installation. 1.25"
covers are included to keep your system sealed while not in use, and a
Philips head screwdriver has been included to aid in assembly.
| ZWO EFW Specifications | |
|---|---|
| Filter Slots: | 8 |
| Filter Sizes Supported: | 1.25" mounted thread-in filters, 31 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: | M42, ZWO OAG-L direct connection holes |
| Rear Connection: | M42, ZWO camera direct connection holes |
| External Power Required? | No |
| Data Interface: | USB-C |
| Weight: | 530g |
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 |