Description

QHYCCD Small Filter Wheel 7x 1.25

The QHYCFW3 series filter wheels are available in multiple sizes to accommodate filters from 1.25-inch to 50 millimeters square.

QHYCFW3 filter wheels can be controlled by either an independent external program using the filter wheel’s USB port or via a special 4-pin port. When connected to the QHY 4-pin port there is no need for an additional power cable or control program.  All of the filter wheel functions can be controlled through the QHY camera.

QHYCFW3 filter wheels utilize a new motor with direct drive and will reverse direction to take the shortest path when moving from one filter to another. For Example, in this demonstration the wheel moves from filter position 1 to position 2 to position 3 and then back to 1 again, over to position 7 and back to position 1 without ever making a complete rotation of the carousel.  This saves time if you’re doing a lot of filter changes in one imaging session.

LED changes color for each filter position.  The tricolor LED assigns one unique color or combination of colors to each filter position so you can tell if it’s moved to the correct position without removing it from the Telescope.

The CFW3 is also thin.  This feature and the short back focus of the COLDMOS cameras means you can add one of several camera lens adapters for Canon and Nikon camera lenses for wide field imaging with the filter wheel.

In the center of the back plate is a 12-volt DC power port.  This port is threaded for a short extension cable that is supplied with the camera that securely attaches such that it will not accidentally disconnect while you are imaging.

 

For more information on how to use the 

 

Technical Specifications 

Filter Wheel		Filter Supported		Recommended Gears		Back Focus Consumed*		Weight		Note
CFW3S-SR CFW3S-US		7*1.25-inch mounted 31mm unmounted		QHY533M, QHY183M QHY5III Mono Planetary Cams (CFW1.25”Adapter needed）		20mm (SR)+4mm (Adapter） 15.5mm (SR)+4mm (Adapter）		About 430g		There’s no difference between S-SR and S-US expect their depth, but S-SR can be compatible with thicker 1.25” mounted filters.

 

For the convenience of calculation, all the data displayed are the increase in the back focal length taken up by using the adapter, which is not necessarily equal to the thickness of the component itself.  All the adapter data provided by QHYCCD are based on the focal length increment. For More information please see: https: www.qhyccd.com astronomical-camera-adapter-bfl-solution

The Calculation of Filter Wheel’s back focus consumed includes two parts: The thickness of  the filter wheel body (like the 15.5mm of CFW3S-US),   and the back focus consumed (like 4mm of CFW3S-US). Now new cams don’t need this adapter anymore, like QHY533M, QHY268M, QHY600M-PH SBFL, etc.

Technical Drawings

QHYCFW3-S-SR

 

QHYCFW3-S-US

In the Box

1. QHYCFW3S
3. Camera to CFW Cable
5. 12V Power Supply Cable
7. USB 2.0 Cable (1.8m)
9. M42 to 2 Nosepiece
11. Spare Screws (x8)
13. M4 x 35mm Screws (x3)
15. M4 x 70mm Screws (x2)
17. Driver Download Instructions Card
19. An adapter for connection with some old cameras like QHY163, QHY183, and QHY294.

20. 

    Manual & Warranty

    QHYCCD 2-Years Warranty

     

     

     

     

Type	7 x 1.25 CFW3S-SR, 7 x 1.25 CFW3S-US