When photographing Sun with H-alpha solar telescope we can easily see prominences, but showing their movement with time may be hard as it's hard to align all images for a smooth animation. There is however an application for that called imgalt.
The launch of Intel Bay Trail CPUs refreshed the netbook market with small and portable netbooks and convertible devices that offer quite decent amount of performance and new capabilities due to detachable or flippable screen. The only thing Bay Trails lack when compared to ultrabook processors is better GPU.
In this article I'll review a Bay Trail representative, Lenovo IdeaPad Flex 10 and I'll show you how to install (a bit painfully) Linux on it - which requires fighting with unsupported 32-bit UEFI.
IMX174 cameras offer low noise, vertical lines free images at very high framerates with global shutter. Point Grey or Basler cameras with those sensors are now in use mostly for solar imaging, but some also use it on planets. High quality and performance comes at a cost. Grasshopper 3 camera with IMX174 costs around $1300 which is around 4 times the price of cameras like ASI120MM, QHY5L-II or PGR Blackfly similar cameras.
Sony announced a new sensor IMX249, which also showed up on Point Grey Blackfly camera list. Instead of 162 FPS there is up to 41 FPS, but the price may be even less than half of the Grasshopper 3 price. Sensor performance is expected to be very similar to IMX174.
Pyboard can handle analog sensors and precise PWM control, but to get that we have to use one of the latest firmwares. So let us update the firmware and test it with an analog joystick and PWM controlled DC motor board.
So we continue our adventure with PyBoard and MicroPython. In this article I'll show how to use various electronic and electric parts with PyBoard - like DC and stepper motors, I2C devices, relays and sensors.
Some time ago I was writing about using USB powered Peltier modules to cool simple cameras like guiders or planetary cameras. Few days ago I've mounted such devices to my ASI120MM and got sensor temperature lower by around 10-15 degrees.
Quite recently I got IDAS Type 4 BGR filters. Those filters aren't just plain RGB filters. Aside of imaging in visual light to get RGB images those filters also allow false color imaging in infrared. Each filters passes a band in visible and infrared light. Depending if they are stacked with IR blocking or passing filter they work in one of those two modes. Infrared false color imaging opens new possibilities for interesting imaging of deep space objects as well as planets like Jupiter.
Let me introduce those IDAS Type 4 filters and describe how they work.
I've released a new version of django-ckeditor-updated covering all latest changes (full ckeditor 4.4.4 package and some inline editor fixes). The django-ckeditor-updated-4.4.4 can be installed from pypi. Note that there is now a new required configuration variable - CKEDITOR_JQUERY_URL.
All outstanding commits have been pushed to django-ckeditor repository (from which I forked) and released as django-ckeditor-4.4.4 (4.4.5 for updated readme). If you are using the "updated" version you can now switch to the django-ckeditor as I plan to make changes there as I now can push pypi releases for it. django-ckeditor-updated is closed.
Many Python web applications run on production with the help of gunicorn or uwsgi. There are however other solutions that may turn out to be even better than the currently popular solutions. One of alternatives is chaussette and circus. Chaussette is a WSGI server that can serve WSGI applications like your Django project. Circus is an application to control and monitor processes and sockets. It can manage chaussette, celery or other sockets and processes making it a manager of all project services.
MicroPython is a Python 3 implementation capable of working on microcontrollers with no operating system. PyBoard is the first microcontroller board running Micro Python. It can be scripted with Python code and can execute it, work without any connection to a PC. How does it work and what can we do with pyboard and Micro Python?