What is the primary purpose of the QHYCCD Adapter Kit - Combo A2?
The primary purpose of the QHYCCD Adapter Kit - Combo A2 is to connect a Canon EF lens to a QHY294M or QHY163M fitted with the CFW3M-US filter wheel, at the spacing the lens needs to reach focus.
How do I know if the QHYCCD Combo A2 kit is right for my camera and telescope?
Combo A2 is for a QHY294M or QHY163M with the CFW3M-US filter wheel and a Canon EF lens. To fit it, you remove the filter wheel and the camera's original connection interface, and replace the interface with the kit's adapter.
Why is achieving correct back focus with the QHYCCD Combo A2 kit important?
A camera lens only focuses correctly at infinity when the camera's back focal length meets the standard set by the lens manufacturer. If the spacing is incorrect, you will see elongated or distorted stars. An adapter kit like the Combo A2 provides the components needed to set this distance accurately.
Can I use the QHYCCD Adapter Kit - Combo A2 with non-QHYCCD equipment?
While the adapters may use standard threads (like M42 or M54), this kit is specifically curated for the back focus requirements and mechanical interfaces of QHYCCD cameras. Using it with other brands may not result in the correct spacing and is not guaranteed to be compatible.
Does the QHYCCD Adapter Kit - Combo A2 help prevent flexure?
Yes. One of the main benefits of using a matched adapter kit like the Combo A2 is creating a screw-fixed, rigid connection from the lens to the camera. This minimizes sag and flexure, which can tilt the camera sensor and ruin long exposures, especially compared to using simple push-fit or set-screw connections.
What components are typically included in a QHYCCD adapter kit like the Combo A2?
Combo A2 contains a 10mm M54 Canon EF adapter, a 4mm M54 screwed adapter, a 3mm spacer, a 1mm spacer, a Cam Top Adapter and eight 10mm M3 screws.
