FF65APO 0.75× Full Frame Reducer
ZWO has released a brand-new FF65APO 0.75× full frame reducer with a four-element optical design. It has a reduction factor of 0.75x, which gives the FF65APO f/6.4 astrograph a shortened focal ratio of f/4.8 and a shorter focal length of 312mm. This allows for less total integration time and a wider field of view, bringing more convenience and possibilities for your wide-field deep sky imaging. The back focus distance is the standard 55mm. It also comes with two thread adapters of M54 and M48, and a built-in M48x0.75 2” filter thread, which makes the connection work simple and convenient.
Connection steps:
- Prepare the FF65APO telescope tube and the focal reducer.
- Unscrew the eyepiece holder at the end of the FF65APO telescope tube.
- Unscrew the end cap of the 0.75X reducer.
- Insert the reducer into the focuser and tighten.
FF80APO 0.76X Full Frame Reducer
ZWO has also released a new 3-inch FF80APO 0.76X full frame reducer with a three-element optical design, including one element made of ED glass. Its reduction factor is 0.76x, which gives the FF80APO f/7.5 astrograph a shortened focal ratio of f/5.7 and a shorter focal length of 312mm. This allows for less total integration time and a wider field of view, bringing more convenience and possibilities for your wide-field deep sky imaging.
The reducer has a rear interface that attaches to the FF80APO telescope tube’s included four-segment camera extension tube. The back focus is the standard 55mm, and it has a built-in M48X0.75 2-inch filter thread for easy attachment.
Connection steps:
- Prepare the FF80APO telescope tube and the focal reducer.
- Unscrew the four-segment connector at the end of the FF80APO telescope tube.
- Unscrew the end cap of the 0.76X reducer and attach it to the M68 thread of the four-segment connector.
- Unscrew the front cap of the reducer, insert it into the focuser inner tube, and tighten it.
FF107APO/FF130APO 0.7× Universal Reducer
ZWO has released a new 3-inch 0.7× full frame reducer that is compatible with the FF107APO and FF130APO telescopes. It has a three-element optical design, including one element made of ED glass. Its reduction factor is 0.7, which gives the FF107APO a shortened focal ratio of f/4.9 and a shorter focal length of 524mm. This allows for less total integration time and a wider field of view, bringing more convenience and possibilities for your wide-field deep sky imaging.
The reducer has a standard 55mm back focus and comes with M68, M54, and M48 threaded adapters for easy attachment.
Connection steps:
- Prepare the FF107APO telescope tube and the focal reducer.
- Unscrew the M86 to 2-inch adapter at the end of the FF107APO telescope tube.
- Unscrew the end cap of the 0.7X reducer.
- Insert the reducer into the focuser inner tube and tighten it.
The M54 tilter is making sensor tilt adjustment much easier than before by allowing you to do the adjustment on the rear end of the camera. You now can make some adjustments during imaging, instead of taking the camera off from the telescope.
Compatible camera: ASI2600MC Duo, ASI2600MM/MC Pro, ASI6200MM/MC Pro, ASI2400MC Pro.
It also fits 7x50mm EFW.
* Notice: The M54-tilter can not be fitted next to the OAG-L (in the direction of telescope->M54-tilter->OAG-L), please pay attention to the 55mm-back-focus solution when using.
How to install the M54 tilter?
- Use a hex wrench to take off the three M3 cylindrical screws on the adapter.
- Disassemble the sensor tilt plate from the DSO camera.
- Place the base of the M54-Tilter onto the cooled camera. Fix them with six 5*6Phillips flat-head screws.
- Then place the top cover of the M54 tilter onto the camera. Turn over them and fix the base and top cover with three M3 screws. Please do align the screws to the M3 screw holes (as shown in the mechanical drawing below). The angle between each two M3 screws should be 120°.
Mechanical Diagram
In the Box
6*M2.5 countersunk screws * 6M54 tilter *1
W
The traditional equatorial mount requires heavy counterweights. It can be very difficult to keep balance in RA and DEC directions, and also inconvenient for transit and storage, which brings amateur astrophotographers a lot of pain when they are out for imaging.
Some of the strain wave geared drive mounts are relatively simple in functions, insufficient in load capacity, and also not very stable in use.
To solve the above issues, ZWO developed the ASI Mount series. No need for a counterweight. With a self-weight of 3.9kg, AM3 has a large load capacity from 8kg to 13kg. While portability is very important, stability is also essential in use. Instead of blindly pursuing the lightweight of the mount body, ZWO is more so along the lines of stability for an entire use. The internal structure of the body is optimized with the strain wave gear reducer and synchronous belt, bringing more accurate control and an amazing reduction ratio of 300:1. It is also multi-functional that can be used as both an equatorial mount or an altazimuth mount. You can either control the mount via Wi-Fi and Bluetooth, or a hand controller.
Portable and stable
The internal structure of the body is optimized with the strain wave gear reducer and synchronous belt, bringing more accurate control and an amazing reduction ratio of 300:1.
Customized Strain Wave Gear
ZWO developed the special strain wave gear based on the actual needs for astrophotography. It comes with very low periodic error and high torque. Each mount is tested and equipped with an exclusive PE curve before it leaves the factory so that the quality can be guaranteed.
3.9kg Net Weight
Instead of blindly pursuing the lightweight of the mount body, ZWO is more so along the lines of stability for an entire use.
8kg-13kg payload
The load capacity of AM3 without the counterweight is 8kg, and 13kg with the counterweight.
According to the engineering calculations, we can calculate the maximum load capacity of the AM3 mount:
8kg without the counterweight
13kg with the counterweight.
Supported counterweight:≤5kg
The counterweight should be secured on a counterweight bar of no more than 25cm in length.
Equatorial Mode / Altazimuth Mode
Can be switched via ASI Mount App or hand controller
Equatorial Mode: Suitable for tracking and photographing objects
Altazimuth Mode: Suitable for visual astronomy
All-round 0°-90° Pitch Angle
Gear 1: Allow you to adjust the pitch angle grip to achieve a degree between 0 and 60.
Gear 2: You can loosen the hex-head screw and then adjust the pitch angel grip to achieve a degree between 30 and 90.
Wireless Control
Tonight’s Target, GOTO, Live Preview and so many great functions can all be achieved with your phones.
Rocker-style Hand Controller
Comfortable touch and easy to use. Integrated with Wi-Fi network allowing for wireless control. You can easily upgrade the firmware of the hand controller and mount it on the webpage.
Seamless Linkage with ASIAIR
ASIAIR can control AM5 via a wired or wireless connection. The ASI package gives customers the best astrophotography experience.
*Note: The recommended operating voltage for the ZWO Harmonic Equatorial Mount is 12V. When the actual input voltage is below 10.8V, the mount will emit a beeping alarm to indicate under-voltage condition. To ensure proper functioning of the equipment, we recommend using the official ZWO power adapter and an appropriately sized power cable.
What’s in the box
Accessibility tools
① Pier Extension
With the pier extension, the telescope with a long focal length will be greatly avoided from hitting the tripod legs.
② Carbon Fiber Tripod
- Short and portable. Easy to transport inside your hand luggage.
- Carbon fiber material: High strength and high impact resistance.
- Adjustable height: 470-800mm. Dual-section legs provide a stable and rigid platform for telescopes and cameras.
- Spreader plate: Increase the stability of the tripod.
- Weight bag: Provides additional stability by filling it with suitable weights such as stones or your telescope battery pack.
- Fixed spread angle: Easy to use.
The ASI2600MC Duo combines imaging and guiding sensors in one compact body. The main sensor is the Sony IMX571 coming with a native 16-bit ADC,14stops dynamic range, and a 3.76um square pixel array. The readout noise is as low as 1.0e, and the full well capacity reaches an incredible level of 73ke. And it has no amp glow! The guide sensor is the Type 1/1.8 SC2210 with excellent NIR sensitivity. The sensor size is 7.68mm x 4.32mm. It has 4umx4um pixels with an array of 1920×1080 and a full depth of 8780e. The stars on the corner of the guide images affected by reducers back focus distance might not be very round. It is not due to the sensor tilt and will not affect normal use. 
Two-in-one design
Thanks to the compact design, the ASI2600MC Duo only needs one USB cable for control. It reduces potential cabling issues and improves setup speeds. You don’t need a separate OAG and guide camera. 
Tilt Adjustment from Rear (Optional)
The 3 points from the rear make tilt adjustment much easier without the trouble of removing the tilt plate from the camera. 
Performance improvement comparison
Guide Sensor
The SC2210 sensor taken from the ASI220MM Mini camera features very high sensitivity. The QE peak value reaches 92% at 500nm. The readout noise is as low as 0.6e. As the new generation of guide sensor, it has achieved great results in guiding, proved by hundreds of astrophotographers. 
Main sensor
The main sensor IMX571 features an APS-C format and 26MP total pixels. The size is 23.5mm in width x 15.7mm in height, and the diagonal is 28.3mm. The 3.76um x 3.76um small pixel size accommodates an impressive full depth of 50ke. With the new hardware technology, it is even extended to 73ke. 
STARVIS technology
ASI2600MC DUO is based on Sony STARVIS technology. Sony’s back-illuminated CMOS image sensor improves sensitivity and noise reduction – the key factors to enhancing image quality. 
Camera performance
Native 16bit ADC
This 16-bit ADC is not a CCD 16-bit ADC. It can really achieve a dynamic range output of 14stops, which will significantly improve the image sharpness and contrast, and also create smoother and more natural color transitions.
FPS
ASI2600MC Duo’s max FPS in RAW 8 mode at full resolution is 15FPS, which is even quicker compared to ASI2600MC Pro.
Extended full well mode
The full well capacity of ASI2600MC Duo is extended to 73ke when the gain value is set to -25. 
USB 3.0 & 512MB DDR3 buffer
With the match of USB 3.0 and 512MB DDR3 buffer, ASI2600MCDuo provides stable and secure data transmission that can effectively avoid frame-dropping issues during long exposures. 
No amp-glow
Traditional CMOS sensors produce a weak infrared light source during operation quite often seen in the corner of uncalibrated images. It is the tell-tale sign of amp glow. As the ASI2600MC Duo uses zero-amp glow circuitry, you won’t have to worry about amp glow even when using high gain, long exposure imaging. 
QE (Quantum efficiency)
Based on our testing results, the QE peak value of ASI2600MC Duo is over 80%. 
Two-stage TEC cooling
Thanks to the two-stage TEC cooling, ASI2600MC Duo can lower the CMOS sensor temperature to more than 35 degrees Celsius below ambient temperature, which can greatly reduce dark current generation and sensor noise even during extended exposure times. *The Delta T 35℃ is tested at 30℃ ambient temperature. It might get down when the cooling system is working for a long time. Also, as the ambient temperature falls, the Delta T would decrease. 
Dark current noise
Anti-Dew heater
There is a polyimide heater completely fitting the protective window in the ASI2600MC Duo camera. It can help avoid any potential annoying dew or icing issues depending on the environment in which you capture images. The power of the heater is about 5W. If you want to save battery, you can always turn it off in your photography software.
Product Details
Connect External Devices
Connect Nikon/Canon Lenses
① Nikon-T2 Adapter ② EOS-T2 Adapter ③ 2”Filter ④ Nikon Lenses ⑤Canon Lenses
Mechanical Drawing
What is in the box?
ZWO Darkening ring D88
Darkening ring set for regular EFW
EFW-5*2 / EFW-7*2 / EFW-7*36 / EFW-7*36-II
Specifications for the darkening sets:
External diameter: 88mm. Inner diameter: 55mm (2pcs) & 58mm (2pcs). Thickness: ≤0.2mm. 4pcs in total.
* The darkening sets is to help solve the light leaking issue occurring in the gap of the filter wheel and camera.
How to install the darkening sets:
ZWO Darkening ring D90
Darkening ring set for ASI461MM-P set
Specifications for the darkening sets:
External diameter:90mm(2pcs)& 106mm (2pcs) . Inner diameter: 72mm (2pcs）. Thickness: ≤0.2mm. 4pcs in total.
* The darkening sets is to help solve the light leaking issue occurring in the gap of the filter wheel and camera.
How to install the darkening sets:
The 50mm electronic filter wheel is CNC milled from an aircraft-graded aluminum block. Quality guaranteed!
Adopting the quality step motors produced by NPM, Japan, features very high precision and reliable performance.
Can be rotated in both counterclockwise and clockwise directions for filter selection in use.
Power supply method: USB 2.0
Control method: ASCOM and SDK
Driver: Free of driver
Module: 7 positions, 50mm*50mm
Weight: 1kg
Also, can be directly connected to the USB 2.0 ports of the ASI cooled cameras.
Requirements for Filters
1) Square;
2) 50*50*3mm (Thickness supported: 3~4mm).
What’s in the Box?
- EFW
- 0x75mm cross screwdriver
- 2m USB 2.0 right-angle cable
- 0.5m USB 2.0 right-angle cable
- 50mm*50mm filter masks (10pcs)
- Darkening rings set
- M2.5*6 screws (12pcs)
- M3*8 screws(6pcs)
- M2*4 screws (26pcs*2bags)
Mechanical Diagram
Connection Methods
New 2″ filter drawer featuring the anti-light-leaking design that can effectively solve the light leaking issue under long exposure.
(M42)
(M54)
Two sizes available: M42 and M54.
Double strong magnets adopted for stronger adsorption, easier installation and pulling out.
Lock screw on the side for you to adjust the tension of the holder to eliminate gap. Double insurance.
(M42)
(M54)
Additional adapters provided with the filter drawer for equipment connection.
The differences between the old and new filter drawer
What’s in the Box?
M42 filter drawer:
Filter drawer *1M48-M42F adapter *1
M54 filter drawer: 
Filter drawer *1M54-M48F-2mm *1
Mechanical Diagram
M42 filter drawer: 
Diameter 70mm * Thickness 21mmM42 * 0.75 male(external) thread (camera side)M48 * 0.75 female(internal) thread (filter end)M48 * 0.75 female(internal) thread (telescope side)
Suitable for 2-inch astronomical filters。
M54 filter drawer:
Diameter 70mm * Thickness 20mm
M54 * 0.75 male(external) thread (camera side)
M48 * 0.75 female(internal) thread (filter end)
M54 * 0.75 female(internal) thread (telescope side)
Suitable for 2-inch astronomical filters and full frame cameras, such as ASI2600MC Duo, ASI6200 and ASI2400 series.
Can be used to connect Sony NEX lens and ASI cameras with small sensor formats, such as ASI1600, ASI294, ASI183, ASI174, ASI432 and ASI585.
Only support manual lenses supported, not compatible with automatic lenses.
E-mount lenses with 18.5mm back focus length are supported (Only manual lenses).
Mechanical Diagram
Connection Methods
STARVIS Technology
The STARVIS Technology brings better imaging performance to the camera in low light conditions.
DDR3 Memory
The camera is equipped with a USB 3.0 transmission interface and a built-in 256MB DDR3 memory to ensure stable and secure data transmission. Under long exposure, it effectively avoids frame dropping and greatly reduces the glow effect caused by slow reading speed.
Note that the DDR3 memory is NOT available in the first 200 early-bird cameras. It’s only available in the official version.
We do not provide DDR3 memory version replacement or upgrade for the early-bird batch.
USB 3.0 & ST4 Port
USB 3.0 Port: Provides 5Gb bandwidth to let the camera run at 136.1fps (10bit, high speed mode) or 63.9fps (12bit, normal mode) at full resolution (2Mega).
ST4 Port: Can be used to connect with auto guide port of mount for guiding.
ASI462MM vs ASI290MM
As the upgraded version of ASI290MM, ASI462MM has achieved great improvements regarding QE and readout noise.
Camera Performance
Low readout noise & high QE value
ASI462MM is integrated with HCG mode, which can effectively reduce readout noise at high gain and allow the camera to maintain the same high dynamic range as it does at low gain. At gain 80, the HCG mode is automatically turned on; the dynamic range reaches a level close to 12stops, and the readout noise can be as low as 0.47e.
QE value and readout noise are some of the most important specifications for astronomical cameras. High QE and low readout noise are essential to improve image SNR(Signal to Noise Ratio).
The QE peak value of ASI462MM is around 89% (Relative response).
AR Protective Window
ASI462MM features the AR(Anti-Reflective) coating on its protective glass. Diameter of the window: 21mm. Thickness: 1.1mm.
Product Details
Connection Methods
Structural Dimension Diagram
What’s in the Box?
