Quote:
Originally Posted by Stonius
Blows my mind that you can do this.
So is that a detection threshold of 0.02 magnitudes you're working with there?
Also did you use the de-focus method, or did you buy one of those special diffuser filters?
Markus
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Great questions, Markus.
The transit depth from the ephemeris is 15.05 ppt, which is around 16 milli-mag, approximately 0.016 mag. The star has a magnitude of 11.5. While NASA calculated the transit flux depth at 1.5%, my results indicate a closer to 2% drop in flux.
I did not use a diffuser. The C8/Starizona corrector/IMX571 combination leads to significant oversampling, resulting in a good spread of photons from the star across the pixels. I supplemented this with a slight defocus, extending to about 5.0 HFD. The imaging session lasted about 3.5 hours, during which I allowed the C8 focus to drift (as they tend to), and the session concluded at around 6.5 HFD. This did not pose any issues during processing.
Chris