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
Why do you need an Active Extension Cable?
According to the characteristics of USB3.0, the maximum supported cable length of USB3.0 is about 3 meters, or the transmission stability cannot be guaranteed above 3 meters. In order to ensure the image quality, the standard USB cable length of QHY is 1.8 meters.
If you really need a longer a USB cable, please choose this cable with an active amplifier, which needs an extra DC 5V power. Please contact QHYCCD or dealers if you need this accessory.