Axel replied to the topic 'D.A.R.V 'Drift Alignment by Robert Vice method'' in the forum. 3 months ago

Hi altogether,

now that my setup of OnStep, the astroberry pi, focuser and so on is ready, I am starting to dig deeper into KSTARS and EKOS. Since I use D.A.R.V. (manually) and wanted to integrate it into my workflow, I came about Jasems scripting HowTo ( ). For programming I don't have the time in the moment. Fortunately INDI is scriptable: - and I did it :-) Feel free to mail me your ideas or post at this thread - no crossposts supported (really!) ;-)

This is my very simple bash script which should do the thing. .

One question. setting the position of the scope can only be positioned with RA/DEC, not ALT/AZ coordinates. This is OK and I am using the (bad) algorithm to get near the meridian. I know the following solution is not very good. If someone has a better idea -> post here.

south=$(date +%I)
actMinute=$(date +%M)
actSecond=$(date +%S)
indi_setprop "${indi_telescope}.EQUATORIAL_EOD_COORD.RA;DEC=$south:$actMinute:$actSecond;$(( 0+$decOffsetNS ))"

=> indi_setprop "Telscope Simulatior.EQUATORIAL_EOD_COORD.RA;DEC=09:39:23;0"
where 09:39:23 is the local time in 12 hour format.

Cheers, Axel


Axel replied to the topic 'Install INDI and KSTARS on Raspbian Buster' in the forum. 3 months ago

Hi there,

this is an older thread I just stumbled upon.

To get things working on the PI with EKOS I am working - from the beginning - with astroberry ( ). This is the most hassle-free method getting everything needed up and running on the PI. Or simply buy :-)


Axel replied to the topic 'DIY Flatfield Dustcover with RPi' in the forum. 6 months ago

Hi Paul,

thank you for sharing your experience so far and it nice to see everything is working for you. I got some really interesting ideas for my own FlipFlat project. A long time passed. When I read through the thread carefully, I see you made some changes to the code and did a CAD design different to the one of. So would you mind share the final project summary with us?: source code, stl/obj/freecad files, specs.

best regards


Axel replied to the topic 'D.A.R.V 'Drift Alignment by Robert Vice method'' in the forum. 1 year ago

So do I.

No view to north. D.A.R.V. brings me very near to an acceptable aligment.And PHD2, as also EKOS requires at least a good first align to the NCP before you can even use it.

So D.A.R.V. is - in my opinion - an elementary tool.

Until I detected D.A.R.V, I never could get my mount aligned correctly on my balcony. It is so simple and yet practical.

Also a very famous windows competitor application (APT), which I cannot use on my Linux devices, including the astroberry (based on Raspberry Pi), implemented the method.

Tracking on.

Take photo and capture / solve, slew to south/dec zero, take a DARV photo, correct azimuth…

Slew to east/dec zero, take a DARV-Photo, correct altitude…

Genious and simple, and it works.

If I just had time and knew how to inplement…

Cheers Axel


Axel replied to the topic 'Ekos Polar Alignment Assistant (Beta) is here!' in the forum. 2 years ago

PK wrote: I'll give it a shot!

I would be highly interested, if this worked - because nevertheless I am living at 48 deg north, I don't have a view to north from my balcony ;-) So without using a guiding scope it is really really problematic. I think, this is a scenario, which a lot of people might have. Or think, if you are in the mountains or have trees to the north.

Cheers Axel


Axel replied to the topic 'Erratic behavior slewing South - Kstars changes peer side' in the forum. 2 years ago

Hi everybody,

luckily I could solve the problem. I don't know exactly why it's working now but here is what I did:

  1. Installing EQMod, Stellarium_Scope and Stellarium on a windows pc. Configuring the mount. I got the same problems. But here, the reverse DEC, reverse RA switches worked so I found out, that the DEC axe slew wrong.
  2. Reconfigured my mount controller to reverse DEC (in fact an d in my case RA is reversed, DEC not).

Voilá ;-)

I took me a long way here. I estimate because initially a already tried to reverse DEC i can only assume, that either I missed something or the windows setup trigged something in the mount controller so everything is working know. Glad it's no bug.


Axel created a new topic ' Erratic behavior slewing South - Kstars changes peer side' in the forum. 2 years ago


I have configured my EQ-5 with custom motors and an AstroEQ controller using Astroberry (KStars, Ekos, INDI).

That works so far for every Star thas is from West over North to East and above the North Celestial Pole. When I cross that boarder, the RA and DEC axes move reversed and the pier side switch in The EQMod-Mount->Main Control Panel (INDI Control Panel) switches from "West(pointing East)" to "East(pointing West)". See the attached files from KStars.

I tried reconfiguring my mount controller and tried the "Reverse DEC" switch (which is not working with my controller).

I am just Slewing/Tracking here, not making images (meridian flip).
There is no alignment (tried, but won't help).
I am always starting from the default park position (Site Management -> Options -> Default -> Write)



Axel replied to the topic 'Astroberry Server - Headless Mode? Kstars/Ekos/INDI autostart' in the forum. 2 years ago

Hi there, hi Kaczorek,

I am wandering and didn't find anything about:

* Running astroberry "headless" - only start the indiserver with the given Ekos configuration


* In the gui -> Autostart KStars (no problem), but then autostart Ekos after KStars and Indi with a default profile


P.S.: I am doing my first workshop for others about KStars and the astroberry-PI ;-) Thanks for your great work Kaczorek.


Axel replied to the topic 'Astroberry Server' in the forum. 2 years ago

Hi Radek,

sorry: one last question again using "xz": how exectly do you compress a given (!) sdcard into an "img.xz"?
I don't want to use dd or ddrescue.

Greets Axel


Axel replied to the topic 'Astroberry Server' in the forum. 2 years ago

Dodge wrote: Hi Radek,

Thanks - but the scaling only works through a web browser, I'm using a VNC viewer on the tablet. Anyway, I've made some more tweaks to /boot/config.txt and I've had some success. I don't know why it wasn't working before, but thanks for your help!

Thanks again!


Hi Paul,

which changes did you do to VNC and/or /boot/config.txt exactly?

I tried to edit ~/.vnc/config with e.g.
-geometry widthxheight

without success.



Axel replied to the topic 'Astroberry Server - Installation problems' in the forum. 2 years ago

Kaczorek wrote: Thanks for your comments Alex. I do appreciate your input. I will be releasing new version soon so I will be updating the documentation as well.

BTW. xz is very efficient compression utility for images e.g. Ubuntu Mate images for Raspberry Pi are available in this format - see here .

Again thanks for the link. Just to mention: also points out other ways using "ddrescue (command line interface)" or "gnome-disk-utility (graphical user interface". But made my experiences with non-Linux-users Etcher is really a brease ... and open source ;-)


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