Astronomy Specialist

QHY CFW3 MEDIUM FILTER WHEEL 7 x 36mm

$363.00 USD
SKU: QHYCFW3-M-US-7x36

QHYCCD


MODEL

 

The QHY CFW3 Medium is a motorized filter wheel designed for 7 unmounted filters with a diameter of 36mm. It uses a high quality ultra-thin hybrid stepper motor that compared to standard electrical motors, is more precise as it has a smaller stepper angle. The motor is enclosed to prevent dust from entering, thus improving reliability and the durability of the motor. The QHYCFW3 main body is CNC machined from a single piece of aluminium, sandblasted and anodized for a high quality finish. 

The QHY CFW3 filter wheels support two connections: 

- the RJ11 port with 4 pin that allows to connect and power the filter wheel to any camera with the CFW port (cable supplied with the filter wheel).

- the USB port for a direct connection to your computer (the USB port must supply 780mA).

The CFW3 has standard USB and a dedicated RJ-11 port for connecting to a QHY camera.

 

There is an internal switch to select one of the two connection modes and the external LED shows which mode has been selected:

- if the external LED light flashes red for one second, the filter wheel is in USB mode. 

- when the LED light flashes green, it is in RJ11 port mode.

The direction of rotation can be reversed clockwise or anticlockwise to quickly select the desired filter. The stepper motor turns the filter wheel by a friction drive with zero backlash. 

All the QHY filter wheels have a female dovetail ring for the QHY cameras. Under this removable ring the CFW3 Medium filter wheel has a standard M54 x 0.75 female connection. 

 

 

 

 

Compatible filters 7 x 36 mm
Ports
RJ11 4 pins / USB
Power draw 780 mA max
Power supply RJ11 cable connected to QHY camera with CFW port or USB cable (must supply 780mA)
Control RJ11 or USB (change mode using the internal switch)
Maximum thickness of the filter 5.5 mm (excluding the filter thread)
Optical thickness with QHY dovetail camera adapter 19 mm
Optical thickness without QHY dovetail camera adapter 17 mm
Camera connection
QHY dovetail camera connection and female M54 x 0.75
Telescope connection M54 x 0.75 female
Camera compatibility QHY 183 M/C, QHY 163M/C, 294M/C and QHY 168C, 247C, 268C connecting the camera dovetail adapter to the filter wheel
Weight
691g
SKU QHYCFW3-M-US-7x36


 

CFW3 Medium ultra slim version schematic.

 

Connection diagram for CFW3 Medium-US with Combo adapter kit A1.

  • Filter Wheel body
  • M54 to 2" adapter
  • USB cable
  • 4-pin RJ11 to 5.5-2.1 female jack to power filter wheel if USB cannot supply enough amperage
  • 4-pin RJ11 control cable for QHY cameras (CFW port)
  • M3 screws for OAG
  • M4 thumbscrews for connecting camera (100mm & 35mm)
  • QHYCCD sticker

 



   Features of the CFW3 Filter Wheel.  

Demonstration of the various ways of connecting the filter wheel to different equipment.

 

 

Guide to installing QHY and ASCOM drivers for QHYCCD cameras.

 

ZWO camera software QHY CFW3 driver

ZWO camera software QHY CFW3 manual

Customer Reviews

Based on 1 review
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Q
Quincy Lee
Works great as expected

Easily connected it to N.I.N.A. after downloading drivers and filter switching/selection works like a charm. Haven’t used it for any imaging sessions yet due to poor weather but at this rate I’m sure it will continue functioning properly.

QHY CFW3 MEDIUM FILTER WHEEL 7 x 36mm.

QHY CFW3 MEDIUM FILTER WHEEL 7 x 36mm

$363.00 USD

MODEL

  • ULTRA SLIM

Optical design

Image circle

Focal ratio

Aperture

Focal length

Optical thickness

Threads

Cooled

Colour or Mono

Pixel size

Sensor dimensions

Resolution

Sensor diagonal

Quantum efficiency

Read noise

Fullwell capacity

Bit depth

FPS

Camera backfocus

Filter size

36 mm

Filter size

36 mm

Bandpass (FWHM)

Bandpass (FWHM)

Glass thickness

Mount type

Payload capacity

Latitude range

Dovetail saddle

Slew speed

Encoders

Periodic error correction

Counterweight shaft

Azimuth adjustment range

Internal diameter

Illuminated diameter

Compatible telescope external diameter

Weight

Length

Width

Height

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