Neil C nhmc
nhmc
/ mortgage_repayments.ipynb
Created
February 11, 2016 02:22
A mortgage repayment calculator written in Python using a Jupyter notebook
Loading
Sorry, something went wrong. Reload?
Sorry, we cannot display this file.
Sorry, this file is invalid so it cannot be displayed.
nhmc
/ Curve of Growth calculation
Last active
December 15, 2015 04:39
An IPython notebook generating a curve of growth (rest equivalent width vs column density) for neutral hydrogen.
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| { | |
| "metadata": { | |
| "name": "Curve of growth" | |
| }, | |
| "nbformat": 3, | |
| "nbformat_minor": 0, | |
| "worksheets": [ | |
| { | |
| "cells": [ | |
| { |
nhmc
/ calc_bg.py
Created
November 16, 2012 10:43
Calculate the background and RMS of an astronomical image
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| import numpy as np | |
| def calc_bg(a): | |
| """ Estimate the background level and rms. """ | |
| good = ~np.isnan(a) | |
| assert good.sum(), 'no good pixels!' | |
| # poor man's source detection... | |
| vmax = np.percentile(a[good], 80) | |
| c0 = a[good] < vmax | |
| temp = a[good][c0] |