Keith Cobby replied to the topic 'KStars Video Documentation?' in the forum. 2 weeks ago

Topic suggestion - Trouble shooting, creating and exporting error logs

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Keith Cobby replied to the topic 'indi_asi_ccd crashing' in the forum. 2 weeks ago

Double check suggestion - you've updated both the RPi and the laptop.

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Keith Cobby replied to the topic 'Flat Calibration failing to find a valid exposure time' in the forum. 2 weeks ago

Are you being a little too optimistic to reach 40,000 ADU on a flat? (I presume you are going for low gain). Can I suggest you review test histograms at 10,000 - 30,000 ADU. Tolerance of +/- 500 should be fine when you get your ADU target. You can easily take more images if you're worried about getting enough signal.

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Keith Cobby replied to the topic 'Live Preview - ASI1600MM-Cooled via RPi' in the forum. 2 weeks ago

Was out in the field two nights ago to capture an ISS Lunar Transit (final image attached). All set up and attempted another Live Preview from the ASI1600MM-Cooled, this time with the mount and camera using direct USB to laptop, but still no luck. (FYI: ASI120MM was fine in this setup).

Undeterred I disconnected the ASI1600 in the Indi Control Panel and switched to using Planetary Imager (Mount control remained via Ekos). Got a reasonably steady stream of 5 FPS at 16-bit recorded as .ser on the laptop.

Can anything be done to improve the Live Preview with high resolution images? If the .ser file is saved to Local would that help the preview? I presume the preview window is a low res copy of the frames being saved?

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Keith Cobby created a new topic ' Live Preview - ASI1600MM-Cooled via RPi' in the forum. 2 weeks ago

Can anyone offer an insight?

I'm not having much success getting my ASI1600MM-Cooled to Live Preview when connected through my 'chained' RPi's. Long exposure imaging is fine with no problems but Live Preview just doesn't produce any stream nor save .ser file. The Live Preview Window stays dark, no FPS is displayed, I click record on/off and it says no frames taken, no frames saved.

It works perfectly with a direct USB connection via local host but doesn't when connected through the remote host.

Note: on the same rig my ASI120MM Guide Camera works great on the remote host, through the same chained RPi's.

If anyone has a similar setup I'd be grateful for your thoughts.

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Keith Cobby thanked Jasem Mutlaq in topic KStars 2.8.2 released! 2 months ago
Keith Cobby replied to the topic 'Polar alignment non-goto mount' in the forum. 2 months ago

I think in the case of non-goto mounts you should drift align.

The Ekos alignment tool is based on mathematical formula and subsequent measurement, it therefore requires digital accuracy from the DEC rotation.

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Keith Cobby replied to the topic 'ASI Camera - Gain/Offset/x-Bit' in the forum. 2 months ago

I would suggest that anything you see below 30 seconds of exposure is not really representative of the sensor for long exposure. Spend an evening testing your rig on a variety of objects with Unity exposures up to 120-240sec. A dozen of each to give you some SNR to play with. Diligently acquire bias, flats and darks (even if you dont advocate using all types of calibration frames, it will expose a better understanding of how the camera works).

Then process your images like you mean it.

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Helge thanked Keith Cobby in topic ASI Camera - Gain/Offset/x-Bit 2 months ago
Keith Cobby replied to the topic 'ASI Camera - Gain/Offset/x-Bit' in the forum. 2 months ago

What I would personally suggest is to use the recommended Unity settings 139/50/21for exposures between 120-240sec. Unity settings are considered a balance between SNR and Resolution.

When you're happy with the camera you can then try the optimal SNR settings which are 70/50/10 for 480-600secs.

Don't forget, you will need Bias, Darks and Flats at the same camera settings.

For focusing between filters you'll probably need to find a setting that allows focusing to be done quickly; 300/50/21 will get you to a few seconds exposure. Trial and error here is essential.

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Keith Cobby replied to the topic 'ZWO ASI Wheel (localhost connectivity)' in the forum. 3 months ago

I hadn't noticed any specific naming difference just the wording EFW and ASI Wheel are used for the same device. FWIW I used the command line efw_initialiseefw_initialise utility from ZWO and the filter wheel responds perfectly when connected via USB.

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Keith Cobby replied to the topic 'ZWO ASI Wheel (localhost connectivity)' in the forum. 3 months ago

Running as Root did not remedy the connection.

Received new device EFW
< EFW >: < CONNECTION >
< EFW >: < DRIVER_INFO >
< EFW >: < DEBUG >
< EFW >: < SIMULATION >
< EFW >: < CONFIG_PROCESS >

Ekos: "Unable to establish:\n+ ASI Wheel\nPlease ensure the device is connected and powered on."

Is it anything to do with the naming somewhere? The new device is found EFW, then it says unable to establish with ASI Wheel

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Keith Cobby created a new topic ' ZWO ASI Wheel (localhost connectivity)' in the forum. 3 months ago

I'm unable to connect to my ZWO EFW Filter Wheel via a localhost connection. All works fine with a remote connection listening to port 7624.

With the EFW Filter wheel direct USB to Laptop connection for localhost connectivity, when I run the indi_asi_wheel driver via the command line the resulting response indicates that the driver is listening on port 7624 like every other drivers does but fails to read everything from the device;

keith@keith-NEON:~$ indiserver -vv indi_asi_wheel
2017-08-06T16:46:40: startup: indiserver -vv indi_asi_wheel
2017-08-06T16:46:40: Driver indi_asi_wheel: pid=6212 rfd=3 wfd=6 efd=7
2017-08-06T16:46:40: listening to port 7624 on fd 4
2017-08-06T16:46:40: Driver indi_asi_wheel: sending <getProperties version='1.7'/>

2017-08-06T16:46:40: Driver indi_asi_wheel: read <defSwitchVector device='EFW' name='CONNECTION'>
2017-08-06T16:46:40: Driver indi_asi_wheel: read <defTextVector device='EFW' name='DRIVER_INFO'>
2017-08-06T16:46:40: Driver indi_asi_wheel: read <defSwitchVector device='EFW' name='DEBUG'>
2017-08-06T16:46:40: Driver indi_asi_wheel: read <defSwitchVector device='EFW' name='SIMULATION'>
2017-08-06T16:46:40: Driver indi_asi_wheel: read <defSwitchVector device='EFW' name='CONFIG_PROCESS'>
2017-08-06T16:46:40: Driver indi_asi_wheel: read <setSwitchVector device='EFW' name='DEBUG'

The next line should read name='ACTIVE DEVICE' I believe.

Anyone know how to remedy this?

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Keith Cobby replied to the topic 'Reasonable Align Accuracy for CGEM' in the forum. 4 months ago

Just a thought; is your FOV correct for your scope and camera combination?

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Keith Cobby replied to the topic 'Trouble Connecting ZWO/ASI EFW Wheel' in the forum. 4 months ago

Add

sudo apt-get indi-full
sudo apt-get gsc

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Keith Cobby replied to the topic 'Trouble Connecting ZWO/ASI EFW Wheel' in the forum. 4 months ago

Are you using KStars install from Ubuntu repo or from the PPA? The latter being the suggested source. If you're sing a single RPi I presume you are using a power USB hub (this can work wonders).

I use the EFW7 and an ASI120MM with my ASI1600MM-C. The EFW and ASI120MM use short USB cables, both into the ASI1600MM-C hub which in turn uses a single USB cable into my RPi3.

I'm not sure if you can use the indi_asi_wheel driver for the EFW with a simulated camera, I could be wrong.

Have you tried the EFW Initialization Tool found under the SDK Tab of the Software page. I'm not sure what it does but maybe it will help.

[url=https://astronomy-imaging-camera.com/software/[/url]

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Keith Cobby replied to the topic 'Reasonable Align Accuracy for CGEM' in the forum. 4 months ago

I presume your setup is not permanent and therefore when you setup before each session you are assembling the tripod, mount and scope. Having witnessed a CGEM being set up and used, guiding is noticeably better when time is spent on mechanical polar alignment i.e. level tripod and accurate inclination (altimuth). What KStars offers, with its Polar Alignment Assistant, is a precision RA alignment. Get that spot-on and your guiding performance will improve with less pulses and possibly little if any DEC movement. Precise polar alignment will also allow you to accurately model/expose your mechanical errors, if any. Using the Polar Alignment assistant will give you the confidence enjoyed by owners of permanently mounted rigs.

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Keith Cobby replied to the topic 'Reasonable Align Accuracy for CGEM' in the forum. 4 months ago

The plate solver works very well with an image containing distinctive stars. In my experience it doesn't like solving around the NCP, nor deep inside the Milky Way, nor does it like globular clusters. I tend to slew East to somewhere around 45 degrees for my first solve, then another two on the same side in a triangle from the first. Once the scopes starts to be more accurate I delete the earlier solves (the one's not centered in the plot graph) and continue with more stars until each slew is perfect.

After I've done this (which takes a handful of minutes) I will then use the Polar Alignment Assistant tool to double check my mount alignment. If it is indeed out (a major contributor to poor guiiding) I will of course manual adjust my mount using the PA Assistant (sometimes needs to be done twice) and then restart the start alignment/plate solving.

Note: If I move to other side of sky I will again solve at least another three stars, again deleting the ones that don't fall in the centre.

IMPORTANT: just in case, save the mount model as you progress.

Start to finish this is 20minutes. The most valuable 20min you'll ever spend in an all night session.

After this your guiiding can now be set up. Try it with the built in guider first and, should you prefer, PHD2 after. Both guide applications will need a few tweaks to the setup parameters (Max and Min Pulses) is where the magic happens.

Note: I frequently attend imaging evenings with a CGEM owner. He doesn't use Ekos (yet) and simply uses the hand controller to set up his two/three start alignment before using PHD2 to guide. His guiding is either great or horrid depending upon his physical polar alignment at setup. The PA Assistant is a brilliant tool and with the subsequent accuracy of polar alignment, it's your new guiding BFF.

Mount Mechanical Problems: One accurately polar aligned if you are concerned about mount error then log the Guide Data. This will produce a text file that can be exported into a spreadsheet to visualize possible mechanical errors. The guide data log gives you an insight only, you will need to use some dedicated mount software to fully evaluate mechanical errors.

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