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27 Feb 2017
INDI development team is happy to announce the release of INDI Library v1.4.0. This new exciting release builds on the maturity of INDI Library and comes with many new supported devices and fixes for existing drivers. Several improvements and enhancements are included in this release including native support for Cygwin and MacOS platforms in addition to Linux, BSD, and Windows (Client only).
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TOPIC: Ekos Polar Alignment Assistant (Beta) is here!

Ekos Polar Alignment Assistant (Beta) is here! 2 months 1 week ago #15265

I encountered this. It appears to trace wide arcs and then the pointer jumped 180°. I thought it was cone error preventing me from pointing at NPC, but I recalibrated that and I wasn't that far off.
Using EQMod Driver with Skywatcher HEQ5

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Ekos Polar Alignment Assistant (Beta) is here! 2 months 1 week ago #15271

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Supernov that's exactly what happened to me but I did let it finish the movement and noticed the wrong place on kstars. Then I made a second alignment and like you, it worked.

Ihoujin I noticed that jump too. When it reaches very close to polaris it jumps 180°.

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(PT) SC@ROS Observatory
RPi3 / Explore Scientific ES80480 / Canon 550D / ESFF 2" / ASI120MM / Arduino Moonlite DC Clone- HEQ5 Pro
RPi2 / Orion 120ST / Atik 420m / WOIII / SSAG - Arduino Moonlite DC Clone - LXD75
www.flickr.com/photos/139335144@N03/
Last Edit: by nmac.

Ekos Polar Alignment Assistant (Beta) is here! 2 months 1 week ago #15283

Well, I should have known that slewing uncalibrated mount near the pole might end up in odd discontinuities like this. I will try to test it tonight and see if I can figure out a way to do it properly and safely. If not, I'll disable the auto slew and just advise the user to move the mount closer themselves.

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Last Edit: by knro.

Ekos Polar Alignment Assistant (Beta) is here! 2 months 1 week ago #15284

But thing is, I know the NCP was in view I wasn't that far off. And yes I have to test the accuracy in another way but guiding at 0.3" afterwards sort of tells me it was bang on. :)

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Ekos Polar Alignment Assistant (Beta) is here! 2 months 1 week ago #15286

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Hi Jasem, first the align model is working very well, I have checked that with PHD2 drift align and I am really closer than I was before.
Also I can make longer exposures without drift. I was guiding with 0.5" (both RA and DEC) and now I am on 0.4" (RA)/0.2"(DEC) so I it's really a big improvement.
The issue is only the first positioning of the mount, If made manually there's no problem. Thank you for this method, it really helps.
The following user(s) said Thank You: knro

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(PT) SC@ROS Observatory
RPi3 / Explore Scientific ES80480 / Canon 550D / ESFF 2" / ASI120MM / Arduino Moonlite DC Clone- HEQ5 Pro
RPi2 / Orion 120ST / Atik 420m / WOIII / SSAG - Arduino Moonlite DC Clone - LXD75
www.flickr.com/photos/139335144@N03/
Last Edit: by nmac.

Ekos Polar Alignment Assistant (Beta) is here! 2 months 1 week ago #15413

I tested the alignment method yesterday. Just a simple remark. When a slowing orientation (west or east) is chosen at first rotation it remained not set at second rotation.
Anyway I didn't had enough time to test the accuracy as the clouds went to ruin the rest of the night.

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Ekos Polar Alignment Assistant (Beta) is here! 2 months 1 week ago #15414

You mean if you select "Auto Mode" then 2nd rotation does not follow first rotation? If that's the case then it is already fixed in GIT.

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Ekos Polar Alignment Assistant (Beta) is here! 2 months 1 week ago #15415

No I mean that if, manually, I choose east direction for first rotation, at the second rotation west is checked instead of east.

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Last Edit: by patdut.

Ekos Polar Alignment Assistant (Beta) is here! 2 months 1 week ago #15423

Thanks, just committed a fix in GIT for this.

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Ekos Polar Alignment Assistant (Beta) is here! 2 months 22 hours ago #15708

I still have this strange issue with what appears to be a meridian flip while doing alignment.

Before I did the alignment I slew the mount to EAST a bit more than 90 deg° in RA to be sure to have enough space to do two 15° slews to WEST without meridian flip.

I recorded a session with two alignments, the first worked, it did the 15° deg. west rotations without going to the other side.
The second (to prove the accuracy) was far off and it did? a meridian flip although I started at roughly the same RA as in the first alignment... Maybe I am to stupid and should read "Telescope for dummies" again, especially section meridian flip :silly:

If someone finds a reason why the second alignment did slew to the other side and why the result is so far off from the first one please let me know :)

VIdeo:


Log:

File Attachment:

File Name: log_19-58-07.txt
File Size: 640 KB
Attachments:

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--= human, without Windows™ =--
pls excuse my bad english! :)

Ekos Polar Alignment Assistant (Beta) is here! 2 months 12 hours ago #15720

Ok, I found out if I dont do the +90° RA rotation at the beginning but instead use 15° west and continue to rotate 15° west everything works fine.

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--= human, without Windows™ =--
pls excuse my bad english! :)

Ekos Polar Alignment Assistant (Beta) is here! 2 months 9 minutes ago #15733

Also, I noticed from the video when you recheck, you manually go back to the beginning and start again. No need. just start again from where you are, but reverse the direction (i.e. east instead of West), and you're set!

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