QHYCCD QHYCFW3M-US 3rd Generation Medium Thin Version Filter Wheel - 5 x 2" (or 50mm Unmounted) and 7 x 36mm Filter Versions

QHYCCDSKU: QHYCFW3M-US-5

Size: 5 x 2"
Price:
Sale price$431 CAD
Stock:
Only 1 unit left
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Customer Reviews

Based on 2 reviews
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K
Kenneth Sabatini
$300 paperweight

After months of working with QHY on my filter wheel I have never been able to use it. They even sent me a replacement carousel for it.

The problem: ALL of my Optolong filters will bind in the threads and not seat properly while those same filters drop smooth as silk into my ZWO filter drawers. This causes the wheel to bind when attempting to rotate.

The cause: After replacing the carousel (provided by QHY Support) and having the same exact problem I took my 10x Macro lense on my DSLR and looked at the threads on both carousels. They are significantly pitted and rough and do not align at the peaks of the threads. Compared to the threads of the ZWO filter drawers (two of them) whose threads are smooth and perfectly aligned.

I am now stuck with a paperweight as it has taken so long to work with QHY that the warranty has expired.

Will not be buying ANY QHY products in the future.

m
mike benjamin
Filter Wheel

Works well once you get past the poor instructions on how to set up the software and what to choose.

Description

This new ultra-thin stepper motor drive and fully automatic filter switching revolutionizes overall performance!  This Filter wheel is 17.5mm.

QHYCCD selected a high quality ultra-thin hybrid stepper motor for the 3rd generation filter wheel design.  Compared to the PM stepper motor used in many filter wheels, the hybrid stepper motor has higher precision, smaller step angle, and is more expensive.  The motor is enclosed to prevent dust from entering the motor, thus improving reliability and motor life.  The direction of filter rotation can be reversed: The filter carousel can be rotated clockwise or counterclockwise to complete the rotation quickly which is very convenient. The overall design is thinner. 

Friction drive with zero backlash

Regarding the evolution of the motor drive, our 2nd generation filter wheels used a gear drive while this 3rd generation filter wheel uses a friction drive that results in zero backlash during operation. 

USB serial port switch.

The serial port switch can accommodate fast switching between serial communication mode and USB communication mode.  

Use the USB port to power the filter wheel. 

The filter wheel supports the QHY 4-pin connection control mode.  The firmware is open source and compatible with Arduino.  The design is compatible with the QHY-OAG (off-axis guide) for the corresponding size. 

Beautiful in appearance and ingenious.

The QHYCFW3 main body is cut from a single piece of aluminum by a precision CNC machine.  The craftsmanship and finish are exquisite.  When you hold the small design, you do not want to put it down!

A specially designed filter carousel allows the installation of unmounted filters of different thicknesses. Mounted Filters below 10 mm thick can be installed and unmounted filters of different thicknesses can also be mounted on the same filter disc. Filter positioning is more precise and faster.

Ensure you are using an externally powered USB hub for this filter wheel in order to provide sufficient power.

Additional Resources
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