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OpenLiveStacker - is on Google Play!

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#1 artik

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Posted 27 December 2023 - 03:55 AM

Hello dear CN members,

 

After a year long development free and open source application -  OpenLiveStacker is now available at Google Play Store 

 

OpenLiveStacker at Google Play: https://play.google....openlivestacker

Manual: https://github.com/a...-Stacker-Manual

GitHub Project: https://github.com/a...OpenLiveStacker

Out of Google Play releases: https://github.com/a...tacker/releases

 

What is OpenLiveStacker?

 

For a long time I was interested in EAA, I looked for a simple rig that would simplify the task to a minimum.

Something that you can easily assemble and take out in a few minutes for an electronic observing session.

 

Taking a full rig of mount, telescope with an additional laptop or mini PC with an additional power source makes it quite complicated and  "grab-and-go" capabilities of such a rig my be quite limited.

 

So I had an idea of attaching the actual astronomical camera to a tablet and running the stacking/EAA software on the tablet itself.

Finally we all have quite a capable computation device in out hands.

 

sample.jpeg

 

For about a year me and some of my friends have been testing and developing the application.

 

So what we got so far:

 

Supported Cameras

 

  • ASI ZWO
  • ToupTek and Meade based on ToupTek
  • DSLR/DSLM vis using libgphoto2 (same library as in Indi and ASIAir)
  • USB Video class devices - like sv105
  • Android camera 

 

Here some of the supported features:

 

  • Live stacking with darks, flats and dark flats
  • Auto and manual stretching
  • Plate solving using ASTAP
  • Accessing the UI remotely via browser.

 

Additional Notes

 

I will continue to update releases on both Google Play and via GitHub. 

This app isn't for Android only - it is general Linux application you can use on any Linux computer including PI.


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#2 Prasad

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Posted 27 December 2023 - 07:26 AM

Sounds great! Thanks for your work and contribution to EAA


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#3 Xeroid

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Posted 27 December 2023 - 03:20 PM

Well, I dived in head first.....

 

Downloaded and installed on a Lenovo P11 Plus Android v 12 with 6GB RAM, 128 GB ROM, 2000 x 1200 Display, MediaTek CPu

 

Really a fast and very stable tablet.

 

Connected a ZWO ASI 178MC with USB-C cable and selected ASI with 60mm Guide Scope.

 

Ran the program and tried 1 ms, 10 ms, 100 ms all at 180 gain...

 

Was late afternoon, very cloudy sky.

 

Hit the Stream button and get a GREEN SCREEN filled with dots..

 

Yes, its obvious I'm doing something wrong...blush.gif


Edited by Xeroid, 27 December 2023 - 03:50 PM.


#4 artik

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Posted 27 December 2023 - 04:02 PM

Which video format did you select?

Generally green-screen is shown till the first frame arrives. Try to switch format, select some small format - to see if there communication problem.

Try to disconnect camera and restart the app.

 

Check the cable. Frequently connectors and cables are source of problems.



#5 Xeroid

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Posted 28 December 2023 - 10:16 AM

Artik,

 

Thanks for the quick reply and suggestions.

I verified the cable & camera were good via a separate mini PC and SharpCap.

I then re-booted the tablet and started the app with a lower resolution and that did it!

Looks good so far and using a tablet for to display at the scope is far easier/simpler than using a mini PC or laptop.

I will try next clear night (I  might have to wait until 2024 for a clear night!!)

Good job!

 

 

Which video format did you select?

Generally green-screen is shown till the first frame arrives. Try to switch format, select some small format - to see if there communication problem.

Try to disconnect camera and restart the app.

 

Check the cable. Frequently connectors and cables are source of problems.


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#6 andriy_melnykov

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Posted 01 March 2024 - 03:52 PM

Hi Artik,

 

I have tried your App - it definitely works :-) Very simple and lightweight solution, in all senses, from used HW (phone) to the SW itself.

Should play with it more outside of the town.

 

Do you have offset parameter in the camera controls? I didn't find it. For ASI SDK it is ASI_OFFSET or ASI_BRIGHTNESS, in SharpCap also called "brightness". It is actually a voltage offset before camera ADC (if I understand it right), to shift a zero point and not get black pixels, because of noise jumping around the zero point.

 

I saw, you planning to implement gradient background subtraction - from my experience extremely useful feature for sessions without narrow band filters under light pollution.


Edited by andriy_melnykov, 01 March 2024 - 03:53 PM.

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#7 andriy_melnykov

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Posted 01 March 2024 - 04:18 PM

Hi Artik,

 

do you have different algorithms of calibration and stretching for single frames and for stacking mode? This is what I supposed by using the App.

But, why do I care. With an ultra-fast setup (F1.8) I can see, for example, Rosette Nebula already with 1 second single exposure. So, for me, background subtraction and stretching are important also for single frame mode. I like to see bright objects already in single frame mode, like almost in real time. Still, more of a personal preference.



#8 artik

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Posted 02 March 2024 - 09:20 AM

Hi Artik,

 

do you have different algorithms of calibration and stretching for single frames and for stacking mode? This is what I supposed by using the App.

But, why do I care. With an ultra-fast setup (F1.8) I can see, for example, Rosette Nebula already with 1 second single exposure. So, for me, background subtraction and stretching are important also for single frame mode. I like to see bright objects already in single frame mode, like almost in real time. Still, more of a personal preference.

It isn't done for normal "live" stream, since it mostly very heavy.

 

But I assume it is possible to make single frame stacking - i.e. run the stacking pipeline but without actual stacking/registration - use only last frame to show the image.



#9 TelescopeBah

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Posted 02 March 2024 - 09:30 AM

Will this app work for Svbonys cameras? Like the SV605cc?

#10 artik

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Posted 02 March 2024 - 09:34 AM

I opened an issue with this feature request: https://github.com/a...acker/issues/86



#11 artik

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Posted 02 March 2024 - 09:37 AM

Will this app work for Svbonys cameras? Like the SV605cc?

Currently it works with USB Video Class (UVC) svbony cameras: sv105, sv205.

 

I talked to SVBony asking for Android SDK, they told me they are thinking to release the Android SDK somewhere in 2024. I have several friends of mine waiting for SVBony support as well.

 

I can easily support it on Linux, or Raspberry PI if needed (I just need to borrow a camera for few weeks from a friend).

 

But for Android I need Android version of SVBony SDK 



#12 artik

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Posted 02 March 2024 - 09:42 AM

For ASI SDK it is ASI_OFFSET or ASI_BRIGHTNESS, in SharpCap also called "brightness". It is actually a voltage offset before camera ADC (if I understand it right), to shift a zero point and not get black pixels, because of noise jumping around the zero point.

 

Should be pretty easy to add. https://github.com/a.../asi_camera.cpp it should be similar to touptek opt_black_level 



#13 TelescopeBah

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Posted 02 March 2024 - 10:55 PM

Currently it works with USB Video Class (UVC) svbony cameras: sv105, sv205.

 

I talked to SVBony asking for Android SDK, they told me they are thinking to release the Android SDK somewhere in 2024. I have several friends of mine waiting for SVBony support as well.

 

I can easily support it on Linux, or Raspberry PI if needed (I just need to borrow a camera for few weeks from a friend).

 

But for Android I need Android version of SVBony SDK 

OK sounds good. This is what I have really always wanted,  to be able to connect a telescope camera to smartphone or tablet! Simple as possible. I really hope you can get it compatible with the SV605! Thanks for your efforts!!



#14 TelescopeBah

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Posted 02 March 2024 - 10:57 PM

I guess adapters are available to go from usb3 to type c etc.?

#15 andriy_melnykov

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Posted 03 March 2024 - 08:37 AM

I guess adapters are available to go from usb3 to type c etc.?

I used my Pixel 4a with USB-C (phone side) to USB-A OTG Adapter and included ASI ZWO USB cable - works for me.


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#16 artik

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Posted 22 March 2024 - 04:11 PM

I hadn't updated for a while.

 

I want to give a few hints. I'm thinking of some planetary/solar live stacking. It needs some changes but I hope I'll made it enough time before the eclipse

 

As a teaser what it may look like (offline algo-testing - so it may differ from final version)

 

sun.jpeg



#17 artik

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Posted 08 April 2024 - 05:28 AM

Version 27 is released to both github and Google Play

 

Unfortunately I didn't manage to include planetary stacking in this release but there is some new stuff.

 

New features

  • Added support of linear gradient removal caused by light pollution.

Bug fixes:

  • Changed the depth of computing queue from 20 to 10 frames to prevent memory overloading under high loads.
  • ToupTek driver fixes
    • Fixed ROI calculations when binning in use
    • Removed frame rate limits for future solar/planetary imaging
    • Removed RGB image from mono cameras
  • Now frame-rate limits are are not shown if they aren't known
  • Fixed "json" error - in case of no camera detected - now proper error is given

 

Here an example of gradient removal  (after and before)

 

grad.jpeg

 

 

 

 


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#18 bbking 91

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Posted 13 May 2024 - 06:11 PM

Work like a charm on Samsung A52 and ASI 224 mc

Fantastic job

Please add QHY driver

#19 artik

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Posted 14 May 2024 - 12:48 AM

Work like a charm on Samsung A52 and ASI 224 mc

Fantastic job

Please add QHY driver

Thanks,

 

I personally don't own QHY camera so I can't myself add QHY driver.

One of key contributors to OpenLiveStacker (who also added touptek support) owns such a camera but is now very busy with personal matters - so need to be patient.

Finally it is open-source and I and other contributors do it on their own time.




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