Planet Hunters Talk

Kepler dithered calibration data has been released.

  • Artman40 by Artman40

    https://keplerscience.arc.nasa.gov/release-of-dithered-data-obtained-during-kepler-commissioning.html

    "During Kepler’s commissioning phase in April 2009, the spacecraft observed 33,424 stars in a dither pattern for the purpose of measuring the Pixel Response Function (PRF). The pattern consisted of 122 pointings, each with a duration of 14.7 minutes, observed across a 2.5-day period on April 27-29, 2009."

    https://archive.stsci.edu/missions/kepler/commissioning_prfs/ for the data.

    If Kepler K2 engineering test data showed 1 confirmed planetary transit, then according to calculations, there should be 3-4 transits hidden somewhere there.

    Posted

  • ajamyajax by ajamyajax

    If interested here are the known EBs in this Kepler Dithered Data according to Prsa et al. Binary transits are usually easy enough to see in this minimally corrected data if any occurred.

    https://www.dropbox.com/s/2z6flnb6llwupkn/kepler_dithered_data_eb.zip?dl=0

    Also to look for any new transits, the known times can be calculated back into this 2.5 day window using the Prsa values.

    For example:

    KIC 7938870 eb

    period = 0.5807261

    bjd0 = 54953.693993 - 54833 (which is 2454833 - 2400000 adjusted) = 120.693x BKJD (for the primary transit, minus period * x times)

    DD1

    "Kepler Eclipsing Binary Catalog - Third Revision"

    http://keplerebs.villanova.edu/

    Posted

  • Artman40 by Artman40

    So dithered data has 2 more data points per time?

    Posted