I've compiled indi 3rd party from the source code and found that the captured image from my Atik 490ex contains 3 horizontal lines. See screen. This didn't happen in Artemis software nor the ppa distribution.
The OS is rapsbian buster. I tried it on both rpi3 and rpi4, same.
I can confirm this. I have the same lines on my Atik 428EX Mono. I've tested it directly connected to my Windows 10 machine with Artemis & Nebulosity and stretched the images, there are no horizontal lines visible
What happens when you take an image with the camera with Ekos and stretch them in the same way as you stretched the images taken with Artemis & Nebulosity? Do you still see the lines? And vice versa, what happens if you open the image taken with Artemis & Nebulosity and open it in the KStars FITS viewer? Perhaps it is just a difference in the way the images are stretched?
Wouter van Reeven
ASI6200MM and 7 slot 2" filter wheel with a SkyWatcher Esprit 80 ED on a SkyWatcher HEQ5-Pro
ASI1600MM-Pro Cooled and 5 slot 1.25" filter wheel with an 8" TS Ritchey-Chrétien on a SkyWatcher EQ6-R
Using the Atik 428 EX last night I’ve noticed that the horizontal lines disappeared when the camera is cooled to -10C and the Subs are 600 seconds, but as soon as you warm it up and take shorter Subs they return. I’ve tried with the camera connected directly to the raspberry pi 4 and connected on it’s own with no other equipment connected and still the same result.
I've installed the cloudmakers driver and note the differences on the lines. Two lines instead of 3.
I tried to see if this is a general problem by connecting to ZWO ASI camera and there're no lines in the image when it's taken from ZWO ASI
I've stretched 3 images all from the Atik 428EX in PixInsight using the STF function to the same level.
From the left first image is a 2 second Dark captured using Windows and Artemis, no line visible. (Note the camera image is inverted when compared to the Ekos captures)
The second image is a 2 second Dark captured on a raspberry pi 4 Raspbian Buster using Ekos and shows a line.
The third image is a 600 second Sub captured on a raspberry pi 4 Raspbian Buster using Ekos and again no line visible
there's an FAQ in Atik website about the horizontal lines saying it's the USB transfer problem. I'm not sure if this is due to the USB in RPI4 causing this.
I tried ubuntu 19.10 kstars, raspbian.
All same in RPI4.
Finally I have this solved. After an update to the Raspberry Pi 4 B, I encountered the usual issues with things not connecting or dropping out and my Atik 428 Mono just would not connect if I had the focuser plugged into the USB hub. After several hours of connecting one device at a time and swopping USB leads etc, I realised the issue was with the Addon 5 volt powered 7 way USB 3 hub. I switched the hub for an Anker 12 volt powered 13 way USB 3 hub, problem solved. Now I have good connectivity INDI finds all the devices without any input from me, there's less noise in the images and the line has completely disappeared. After so many reports on this forum about USB hubs and their suitability, it should have been the first place I looked.
I hope this helps someone else solve their issue.
Please note even if the hub appears to work from a connection point of view, it may not be working correctly for all your devices.