PHD dither on start-up: This parameter will automatically turn ON (or OFF) the BackyardEOS/BackyardNIKON dither feature each time you start BackyardEOS/BackyardNIKON. See the setting dialog in BackyardEOS/BackyardNIKON PHD moves the guide star once per interval, so if you are guiding at 0.5 versus 2 or 3 second interval then the amount of time it takes to dither will vary greatly 1 minute is not abnormal at all. Because everything here is random anyway, the fact that PHD rarely settle to its absolute intended new location is irrelevant… because the selection of the new location was random too ~ so all is good here. If set at 0.20, the dithering process will terminate successfully when the new location reaches a distance of 0.20 away from the new location. In reality however, PHD will almost never hit the new intended target dead-on… this is where the " Settle dither at" variable comes into play. At 2.55 PHD is reporting that it is still at its original location of the guide star… at 0.00 PHD is at the new location. The number you see in the progress wheel during dithering is the distance PHD is reporting and is indicative of where PHD is from its new location (chosen at random by PHD). What are all those numbers from 0 to 2.55 for?
Backyardeos dither how to#
Please see this thread on how to configure dithering. Once PHD has moved the star and reestablished stable guiding in the new location, BackyardEOS/BackyardNIKON will resume imaging.
Without dithering, you end up stacking your noise and dark subtraction can only do so much.īackyardEOS/BackyardNIKON sends a signal to PHD to tell it to move the “lock position” (the position of the crosshairs in PHD) by a small, random amount. When you stack your images, the noise will be taken out more efficiently because it's never at the same location. The result is that the noise generated by the camera will be in different location for ALL of your images. Dithering is the process of moving the image’s location across images.