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About OlegKutkov

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    astronomy, programming, electronics
  • Location
    Crimean astrophysical observatory

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  1. Hi! My lens is Computar 1.8-3.6mm 1:1.6 1/3 CS. To be able to control iris I made a little changes to the lens electronics. Discovering board I found operational amplifier which controls output motor driver. Pulling down one of the amplifier inputs causes closing the iris. I added little npn transistor key (you can see on attached photo). Base of this transistor is connected to the Raspberry GPIO pin through 1k resistor. So when GPIO is high - transistor is opened and amplifier pin is pulled to the ground, iris closed.
  2. You can find and discover all camera software on Github: https://github.com/olegkutkov/allsky Source code is always under development and under modifications
  3. Every morning special script is collecting all cameras images from the last day and compiling movies using ffmpeg. Then this movies is uploading to the camera's Youtube channel: https://www.youtube.com/channel/UC9mot5kKa6-PNMAXGx5_Sig
  4. Here is web interface. Powered by Bootstrap with additional Javascript code and custom styles. All graphs is generating by the Python matplotlib. Text messages is also generated by the Python code with some Bash wrappings. Every images and text data is reloading automatically every 40 seconds.
  5. Camera down-converter is used to deliver 3.3 volts for the sensors, 5 volts for the Raspberry and QHY and 12 volts for the FANs and IRIS motor. This is two impulse converters and one linear. Also on this board I placed simple FAN driver.
  6. This device requires only one external cable which is used as 100mb ethernet and for powering by the free pairs (variant of PoE). I'm using black outdoor ethernet cable. On the both sides of the cable I've mounted protection circuits. Schematics is attached.
  7. On the image below you can see all logical connection between device modules. Most of the sensors is accessed by the I2C bus which is very convenient.
  8. Cameras module is placed under the dome. You can see mechanical construction on the photo below. Vertical camera is allsky. This is a popular and cheap QHY5-IIM astrocam. Lens is also CCTV, –°omputar 1.8-3.6mm 1.6 This lens contains iris motor which is used to close the camera in a day time to prevent damage of the image sensor. Second horizontal camera is a Raspberry camera module, first version. This module is also equipped with CCTV lens using handmade adapter. QHY camera is accessed with my custom software. RPI cam module is working with standard raspistill utility.
  9. Allsky camera and weather station is very important parts of the modern observatory. Here I wanna describe project that I build for my observatory. I started a new topic because I believe that this project is unique and I hope this description may be useful because project is open source/open hardware. This device contains two cameras, one is for beautiful daytime shots (over the horizon) and second for useful night shots. Also there is a lot of sensors: clouds, ir, light, temperature and humidity. Heart of the device is Raspberry PI 2 microcomputer. Everything is built in waterpr
  10. Adrian, Thank you! I believe it's possible to build native version of my program for OS X. Everything that i need is actually OS X. Maybe i will try to play with Virtual machines or with Hackintosh. Can you specify your OS X version?
  11. Hello and thanks for feedbacks. Today i released a new version 0.4.1. Now with console variant! Project adress is the same: https://github.com/olegkutkov/Raw2Fits To build console version just type "make cli" You will need few dependecies: libraw (same requirements, newer versions is better) cfitsio libconfig Console program requires a simple configuration file. Here is example: /* raw2fits-cli sample configuration file Oleg Kutkov <elenbert@gmail.com> Crimean astrophysical observatory, 2017 */ raw2fits: { /* input/output params */ io:
  12. Few updates. New input fields in UI for RA and DEC of the observed object. FITS header was reworked, now it's mostly corresponds to standard, more fields was added. Now it contains object coordinates in h:m:s and coordinates of the image central point which acts like a reference point. In future version will be added communication with astrometry.net service so all generated FITS's will contain full astrometry information. Also console version is under development and will be released soon. This version works with configuration file and it's more flexible.
  13. Hello. This is my first post here and I wish to introduce a little program i wrote. This is a RAW to FITS batch converter. Converter supports many cameras vendors: Canon, Nikon, Pentax, Fuji, Konica, Hasselblad and so on. May be useful for someone who shooting space with DSLR and wanna do a real science, search for variable stars for example. Program is very simple (see attached screenshot), you just set input directory, output directory and few conversion options. You can choose how to process color channels from the RAW file. Possible options is: - convert RGB to avarage
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