Markus Wildi replied to the topic 'simulation devices enable debug fails' in the forum. 1 month ago

Hello Jasem and joxda

It's controlled in Ekos main screen --> logs


This is true. I found out, that if I switch from Enable to Disable and back to Enable, the check boxes stay permanently. I can live with that.

bye, wildi

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Markus Wildi replied to the topic 'Problem with polar alignment in southern hemisphere?' in the forum. 1 month ago

Hello xthestreams

So I am thinking a bug in the WCS/solver when close to the pole and/or the FOV crossing the meridian?


I noticed that astrometry.net has difficulties once the center of the image is close to CP. That's natural. Let's assume we have a resolution in declination of 1 arcsec/pixel. In RA direction the resolution is the same at the equator but the closer to the CP the resolution increases unbounded e.g. 10 degree/pixel. The pixel "on" the CP has no defined resolution.

I suggest to separate this aspect, do the alignment at dec = 80 deg and repeat it several times. Of course, the idea is only to see if the results are reproducible, but surely not use them to correct the alignment.

Kind regards, bye, wildi

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Markus Wildi replied to the topic 'Astro-Physics GTOCP4 driver, lx200ap_experimental.cpp' in the forum. 2 months ago

Hello

I solved this issue and made my fix available as a pull request AP drivers, undefined park position in HA/Dec coordinate system .

Chris, at Dec = +/- 90 deg HA is well defined, e.g. HA = -6 hours means for a GEM that the counter weights are at their lowest position, where observing at HA = 12 is in general only possible if the mount has a Knicksäule .

Kind regards, wildi

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Markus Wildi replied to the topic 'Advice re Astrophysics Experimental driver' in the forum. 2 months ago

Hello Mike

I posted a proposal in thread Astro-Physics GTOCP4 driver, lx200ap_experimental.cp to change the calls to Alt,Az gotos to HA/Ra, Dec.

Kind regards, bye, wildi

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Markus Wildi created a new topic ' Astro-Physics GTOCP4 driver, lx200ap_experimental.cpp' in the forum. 2 months ago

Hello Jasem

working on thread Advice re Astrophysics Experimental driver I found several glitches which prevented the mount to be parked properly (see attached git diff).

But there is a more fundamental issue. Pointing an equatorial to Az = 0, 180 deg (N/S), Alt = latitude is impossible, since HA (hour angle) is undefined. Any other AltAz position has, of course, a defined HA and Dec value. Since up to now Astro-Physics does not sell any AltAz mounts I think it is best to implement the park positions (1,2,3,4,5) as pairs of HA, Dec. That means replacing any calls of setAPObjectAZ(), setAPObjectAlt() by e.g. Goto(equatorialPos.ra / 15.0, equatorialPos.dec) including the necessary calculations.

If you agree, I'll change the code accordingly in file lx200ap_experimental.cpp and may be in the other AP drivers, too.

Kind regards, bye, wildi

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Markus Wildi replied to the topic 'ALS - Astro Live Stacker' in the forum. 2 months ago

Hello all

if the desktop computer is a Linux machine then rsync comes handy in. Let's assume that kstars writes the images on RPi to directory /mnt/raspberry and ALS expects the images in $HOME/als/scan, then use the terminal and issue the commands

cd $HOME/als/scan
watch -n 5 rsync -av pi@192.168.4.1:/mnt/raspberry/Light/ .
Of course before on has to configure Passwordless SSH access .

Kind regards, wildi

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Markus Wildi replied to the topic 'Problem with polar alignment in southern hemisphere?' in the forum. 2 months ago

Hello Jasem

as soon as I'm through with the AP experimental driver, may be next week, I'll try to use ccd_simulator to get more insight.

Kind regards, wildi

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Markus Wildi replied to the topic 'Advice re Astrophysics Experimental driver' in the forum. 2 months ago

Hello Mike

unfortunately there are two identical attachments. If you right click on one of them save it as

/home/mike-pi/Projects/indi/drivers/telescope/lx200ap_experimental.cpp

It is a bit cumbersome I know.

Kind regards, wildi

P.S. if we need to exchange another file we will do that without this pain.

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