Use plain FileChooser

No idea why I was using a FitsOpener to get this since these are not
FITS files...

stellarphot/notebooks/photometry/06-transit-fit-template.ipynb

@@ -9,12 +9,14 @@
    "outputs": [],
    "source": [
     "from itertools import product\n",
+    "from pathlib import Path\n",
     "\n",
     "import ipywidgets as ipw\n",
     "import numpy as np\n",
     "\n",
     "from matplotlib import pyplot as plt\n",
     "from astropy.table import Table\n",
+    "from ipyautoui.custom import FileChooser\n",
     "\n",
     "from stellarphot.transit_fitting import TransitModelFit\n",
     "from stellarphot.transit_fitting.gui import *\n",
@@ -47,23 +49,23 @@
    },
    "outputs": [],
    "source": [
-    "fits_openr = FitsOpener(\n",
+    "fits_openr = FileChooser(\n",
     "    title=\"Select your photometry/flux file\",\n",
     "    filter_pattern=[\"*.csv\", \"*.fits\", \"*.ecsv\"],\n",
     ")\n",
-    "fits_openr2 = FitsOpener(title=\"Select your TESS info file\", filter_pattern=[\"*.json\"])\n",
+    "fits_openr2 = FileChooser(title=\"Select your TESS info file\", filter_pattern=[\"*.json\"])\n",
     "passband = ipw.Dropdown(description=\"Filter\", options=[\"gp\", \"ip\"], disabled=True)\n",
     "box = ipw.VBox()\n",
     "\n",
     "def update_filter_list(change):\n",
-    "    tab = Table.read(fits_openr.path)[\"passband\"]\n",
+    "    tab = Table.read(fits_openr.value)[\"passband\"]\n",
     "    passband.options = sorted(set(tab))\n",
     "    passband.disabled = False\n",
     "    passband.value = passband.options[0]\n",
     "\n",
     "\n",
-    "fits_openr.file_chooser.observe(update_filter_list, names=\"_value\")\n",
-    "box.children = [fits_openr.file_chooser, fits_openr2.file_chooser, passband]\n",
+    "fits_openr.observe(update_filter_list, names=\"_value\")\n",
+    "box.children = [fits_openr, fits_openr2, passband]\n",
     "box"
    ]
   },
@@ -76,10 +78,10 @@
    "outputs": [],
    "source": [
     "# 👉 File with photometry, including flux\n",
-    "photometry_file = fits_openr.path\n",
+    "photometry_file = fits_openr.value\n",
     "\n",
     "# 👉 File with exoplanet info in\n",
-    "tess_info_output_file = fits_openr2.path"
+    "tess_info_output_file = fits_openr2.value"
    ]
   },
   {
@@ -123,7 +125,7 @@
    "source": [
     "inp_photometry = PhotometryData.read(photometry_file)\n",
     "\n",
-    "tess_info = TOI.model_validate_json(tess_info_output_file.read_text())"
+    "tess_info = TOI.model_validate_json(Path(tess_info_output_file).read_text())"
    ]
   },
   {
@@ -203,7 +205,7 @@
     "# These affect the fitting that is done\n",
     "\n",
     "# bin size in minutes\n",
-    "bin_size = 10 * u.min\n",
+    "bin_size = 5 * u.min\n",
     "\n",
     "# Keep the time of transit fixed?\n",
     "keep_fixed_transit_time = True\n",
@@ -560,31 +562,6 @@
     "### Calculate RMS before and after detrending, hopefully correctly...."
    ]
   },
-  {
-   "cell_type": "code",
-   "execution_count": null,
-   "metadata": {
-    "tags": []
-   },
-   "outputs": [],
-   "source": [
-    "binned"
-   ]
-  },
-  {
-   "cell_type": "markdown",
-   "metadata": {},
-   "source": [
-    "binned.colnames\n",
-    "outside_transit_b = (binned[\"time_bin_start\"] < start) | (binned[\"time_bin_start\"] > end)\n",
-    "rel_detrended_flux_b = flux_full_detrend / np.mean(flux_full_detrend[outside_transit_b])\n",
-    "rel_model_rms = np.std(flux_full_detrend_model - rel_detrended_flux)\n",
-    "\n",
-    "rel_model_rms_b = np.std(flux_full_detrend_model - rel_detrended_flux_b)\n",
-    "\n",
-    "rel_model_rms, rel_model_rms_b"
-   ]
-  },
   {
    "cell_type": "markdown",
    "metadata": {},