add ASDF Intro tutorial

12-ASDF/ASDF_Solutions.ipynb

@@ -0,0 +1,147 @@
+{
+ "cells": [
+  {
+   "cell_type": "markdown",
+   "id": "accb2b84",
+   "metadata": {},
+   "source": [
+    "#### ASDF Exercise Solutions"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "id": "416bd2e3",
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "import asdf"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "id": "f0f39489",
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "af = asdf.open('roman.asdf')"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "id": "286a8859",
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "af.info()"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "id": "78997318",
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "af.info(max_rows=200)"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "id": "f2125b48",
+   "metadata": {},
+   "source": [
+    "Use the **search** method to find the path to the WCS object"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "id": "73b922c1",
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "af.search('wcs')"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "id": "d0d25b5c",
+   "metadata": {},
+   "source": [
+    "Evaluate the WCS object using the Astropy Common API"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "id": "c905a1a3",
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "w = af['roman']['meta']['wcs']\n",
+    "\n",
+    "sky = w.pixel_to_world(200, 300)"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "id": "0fc4a6fd",
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "print(sky)"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "id": "f4e97e7f",
+   "metadata": {},
+   "source": [
+    "Convert to galactic coordinates"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "id": "7fea05b3",
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "print(sky.galactic)"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "id": "78dcc722",
+   "metadata": {},
+   "outputs": [],
+   "source": []
+  }
+ ],
+ "metadata": {
+  "kernelspec": {
+   "display_name": "Python 3 (ipykernel)",
+   "language": "python",
+   "name": "python3"
+  },
+  "language_info": {
+   "codemirror_mode": {
+    "name": "ipython",
+    "version": 3
+   },
+   "file_extension": ".py",
+   "mimetype": "text/x-python",
+   "name": "python",
+   "nbconvert_exporter": "python",
+   "pygments_lexer": "ipython3",
+   "version": "3.9.12"
+  }
+ },
+ "nbformat": 4,
+ "nbformat_minor": 5
+}