NGC 6946 & NGC 6939
Fireworks Galaxy and the Ghost Bush Cluster
- CAMERA QHY183M
- EXPOSURE 11h48min
FILTERS: Optlong L-Pro/Blue 1.25″ / Green 1.25″ /1.25″
DATES:June 18 to June 26, 2021
|CFW3XL||Slot1: 9 position 2inch mounted/ 50mm unmounted|
Slot2: 7 position 50mm*50mm square
|CFW3L||7 position 2inch mounted/50mm unmounted|
|CFW3M-SR||5 position 2inch mounted/50mm unmounted|
|CFW3M-US||7 position 36mm unmounted|
|CFW3S-SR||7 position 1.25inch mounted/31mm unmounted|
|CFW3S-US||7 position 1.25inch mounted/31mm unmounted|
The new CFW3 series filter wheels are available in four sizes to accommodate filters from 1.25-inch to 50 millimeters square.
For filter wheel control a custom QHY 4-pin filter wheel port is included that provides power and control signals for QHY dual control filter wheels like the series 3 filter wheels. Both the series 2 and new series 3 filter wheels can be controlled by either an independent external program using the filter wheel’s USB port or via the QHY 4-pin serial 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 are controlled through the camera and its operating Software.
The series 3 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.
|Model||Back Focus Consumed*||Filter Supported||Available height limitation|
(shall consider leaving the gap）
|Weight||Reference Retail Price|
|CFW3XL||21.5mm||Slot1: 9 position 2inch mounted/ 50mm unmounted|
Slot2: 7 position 50mm*50mm square
|CFW3L||21.5mm||7 posiition 2inch mounted/50mm unmounted||10mm||911g||USD619|
|CFW3M-SR||20.5mm+2mm||5 position 2inch mounted/50mm unmounted||10mm||728g||USD349|
|CFW3M-US||17mm+2mm||7 position 36mm unmounted||5.5mm||691g||USD349|
|CFW3S-SR||20mm+4mm||7 position 1.25inch mounted/31mm unmounted||10mm||446g||USD279|
|CFW3S-US||15.5mm+4mm||7 position 1.25inch mounted/31mm unmounted||5.5mm||419g||USD279|
*Back Focus Consumed
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: Adapter Kits 2.0 (ComboA1~E1)
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).
We list BFL consumed data of both CFW body and adapter at our Adapter System 2.0 instructions (like kit A1, see below). When you use some kits of Adapter System 2.0, you may need to remove this filter wheel adapter. (like kit A2, see below).
1. Do not insert your fingers into the round holes on the filter wheel, otherwise the filter disc may cause finger injury.
2. The copper nails in the filter wheel cannot be disassembled, otherwise the filter wheel will loosen and affect normal use.
3. When the camera uses the control line to control the filter wheel, it is forbidden to use the USB cable to connect the filter wheel at the same time to prevent the power supply from damaging the filter wheel.
4. For the frameless filter, when using the screw to press the lens, it must be pressed by the plastic gasket, but not directly with the metal nut of the screw. Otherwise there is a risk of crushing the lens.
1. Control port switching button: This button is used to set the interface mode. There is two mode: USB control mode and 4PIN conrol mode. If you use the USB cable to control QHYCFW3 you need to select the USB control mode. If you use the 4pin QHYCFW socket cable to control the QHYCFW3 from QHYCCD camera, you need to select the 4PIN control mode. This switch button is inside the case. You can push it on and off. But since it is inside the case, you can not know which position it is. So QHYCFW3 has a LED indicator to tell you of it. When the filter wheel is powered on , if the indicator light flashing for one second and it is red color, the filter wheel is in the USB control mode; if green color the filter wheel is in the 4PIN control mode.
2. Status indicator: Each filter wheel hole position corresponds to a specific color. And this indicator will display if the CFW3 working in the USB control mode or the 4pin control mode. When power on the QHYCFW3, it will be on for one second then off. If it is red color, the QHYCFW3 is in USB control mode. If it is green, the QHYCFW3 is in 4pin mode. the indicator light is off to prevent shooting light pollution the indicator light is off to prevent shooting light pollution.
3. Reset button: After pressing, the filter wheel hardware is reset, the turntable returns to the initial position, the default hole 1
Filter wheel standard accessories
1. Filter wheel body
2. 2-inch extension tube
3. M4 metal hand screws
4. Filter fixing nails, including gasket
5. Filter wheel connected to camera control line
After connecting the camera, go back to the interface and select Setup Filter to select the filter wheel. Follow the steps (as shown).
Select the appropriate hole position to operate.
Use the USB cable to plug into the USB port of the filter wheel and the other end to connect to the computer.
Open the device manager to check the port number (if the driver is installed on the computer, the driver to be installed will be detected automatically, otherwise the 2CP210X driver will need to be installed).
Open the MaxIm DL software and click on Camera Contorl. As shown
After confirming the error, click the ok button continuously. Go back to the Camera Control page.