Quote:
Originally Posted by Dave882
This is fantastic. Really excellent work and congrats on the capture!!
I’ve been really wondering about what you said: “ The target star brightness is going to change during the night, not just from the transit but as you track through different atmospheric thicknesses.” Would you need to calibrate this effect out by identical captures on other nights without the transit?
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You know, when I posted this I wondered if some bright spark would pick up on that.
Yes, you do have to correct for variations in brightness caused by the atmosphere. In the images, along with the target star, you select multiple reference stars. Reference stars should be similar in brightness to the target star and not be a variable star. The software will use variations in the reference stars to correct the target star for variations in atmospheric conditions.
Chris