Gina

This is the new power distribution and RPi control/capture circuit.

Since the facility is available I've decided to provide a switched dew heater supply, same as the ASC, though I might as well use Line A (GPIO5) rather than Line B (GPIO6) as this will be the only Astroberry Board driver control wanted. There is sufficient room on the HAT and I'm currently adding the extra components.

Gave up on that and just copied the backup image I took of the ASC micro SD card to a new card. The software wanted is the same except for the cooling and dew heaters (cooling is built into camera and may or may not want a dew heater control). So next job is to work out layout and size of box to take all the bits.

I have posted the new thread but cannot get any further with it without help from a more learned member...

This thread has become somewhat mixed up with both the imaging and the RPi software setting up and I think the RPi stuff ought to be in a separate thread.

No good - the fog has rolled in now so packing up for tonight.

Still clear but the Heart & Soul are about to go behind an obstuction for an hour or so, so I'm moving over to the NAN area and capturing SII.

I think it's more likely to be the much greater histogram stretch applied.

Now capturing OIII subs and these are very much fainter, making me wonder if I should increase the exposure. OTOH if I do the stars will saturate more and become bigger making the combining of different wavelengths more difficult. I think it's more the overall accumulated time that counts rather than individual subs as long as the noise is low - which it is. Random noise accumulates as the square root of the number of subs whereas the signal is directly proportional. So the more subs the better the resultant signal to noise ratio. Here is one OIII 60s sub histogram stretched to show the nebulae.

Another 60s sub in Ha this time slightly cropped and gamma stretched to bring out the fainter data. I plan to take 100 Ha subs if conditions permit followed by OIII and SII subs as and when we get clear sky.

Clear sky tonight so I'm imaging the Heart & Soul Nebulae. Currently capturing 60s Ha subs.

There's a problem further up too

Phew... That was a bit of a detour but something else learnt on the way Now to the rest of the INDIlib installation - using these instructions. Oh dear - "Huston - we have a problem..."

OK... Downloaded the indilib file to win7 and then ran FileZilla to FTP across to the RPi. Just entered the RPi IP address in Host then Username and Password, Port 22 - then clicked Quickconnect. Transferred from local window to remote window with drag and drop.

Yes, I need the file link. The bottom left corner of the browser window gives the HTML file link. Looks like I'll have to download to to my Win7 desktop and use FileZilla to FTP across - I hadn't thought of that. I tried accessing the INDIlib page using Linux Mint but same result. All the info for installing indilib is in the form of command line text except for the download. I wonder why they don't list a wget command to the file. Thank you for coming back on this

But that will save to my Download folder on my desktop machine - I want to install on the headless RPi. Normal method is "wget <filename link>".

Installing the INDI library full edition next. First to install the dependencies :- sudo apt-get install cdbs libcfitsio3-dev libnova-dev libusb-1.0-0-dev libjpeg-dev libusb-dev libtiff5-dev libftdi-dev fxload libkrb5-dev libcurl4-gnutls-dev dcraw libgphoto2-dev libgsl0-dev dkms libboost-regex-dev libgps-dev libdc1394-22-dev Then download the library as a .tar.gz package I have a problem :- Previously I used "wget http://www.indilib.org/download/raspberry-pi/send/6-raspberry-pi/9-indi-library-for-raspberry-pi.html" and it downloaded the "libindi_1.2.0_rpi.tar.gz" file but now it downloads the HTML file. I can't find anywhere on the INDIlib site where I can get the link. All links just go to the download page.

If at any time you want to shutdown the RPi rather than just unplugging and risking corrupting the system it's best to shut down the OS properly using sudo shutdown -h -P now.

With the OS upgrades completed we can now install libraries. We need the bcm3825 chip library to use the GPIO and the INDI and Astroberry libraries for the hardware drivers and INDI server. bcm2835 library added using the following command lines, executed one at a time. wget http://www.airspayce.com/mikem/bcm2835/bcm2835-1.50.tar.gz tar xvfz bcm2835-1.50.tar.gz cd bcm2835-1.50 ./configure make sudo make install Next to make this up to date with sudo apt-get update and sudo apt-get upgrade. And sudo reboot to finish the installation.

Next running sudo apt-get update and sudo apt-get upgrade to update repositories and upgrade software. Screenshots showing end of update and ready to upgrade.

Ran sudo raspi-config and Expanded Filesystem also changed password to a shorter one. Rebooted system to make changes effective. Now need to re-run PuTTY as rebooting closes the session. New session :-

We are now ready to apply any updates/upgrades and set up system files and install software. First we need to expand the file system to make room for installing software. Please wait while I find out how... OK - found it raspi-config

Next step is to Open PuTTY. With the new SSH connection, PuTTY comes up with a Security Alert asking you to check that you're accessing the right host computer. Click Yes to confirm and the SSH login window is displayed. Log in as pi with password of raspberry and the initial text is displayed followed by the command line.

Micro SD card inserted into Raspberry Pi 3 B and the latter powered from Raspberry Pi Mains Adapter. RPi connected to router with Ethernet cable. Run PuTTY and insert IP Address for the RPi - this may be obtained from your router management screen. You may want to alter the text size of the PuTTY screen display from the tiny 10 point default - I changed it to 18 point. Once things are set up, it's a good idea to Save the settings for future use - type the file name for the saved info in the Saved Sessions box and click Save. These procedures are shown in the following screenshots. Note - the Saved Sessions include my earlier sessions for other RPi sessions.

Raspbian Jessie Lite downloaded and the .img file extracted from the .zip using Extract All from the right click menu on the .zip file. Next stage is to write the .img file to the micro SD using Win32 Disk imager. These screenshots show the process - firstly run Win32 Disk Imager and check that it has chosen the right device for writing. Select the Image File (2016-09-23-raspbianjessie-lite.img) and Open it. Finally, Write the image to SD.