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INDI Library v1.8.0 is Released (27 Jul 2019)

INDI Library v1.8.0 is mostly a maintenance release to fix a few bugs in several drivers.

Polar Alignment is not working right - no refresh

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Polar Alignment is not working right - no refresh was created by maxthebuilder

Hello,
I am still new to this.
I tried Polar Alignment before while using just a DSLR. It was very slow but kind of working.
Now I added a guider scope with a CCD to my setup and it's much faster.

When I run the Polar Alignment routine - it does its things - rotates, takes pictures, solves - all works great.
But when it comes to the actual alignment, when one selects a bright star to bring it to the cross...
I hit the "refresh" (every 1 sec) button and it refreshes once and stalls saying "cannot capture while CCD is acquiring".
Sometimes, after a minute or two it starts working again but after several frames stalls again, eventually forever.
Is there something in the settings I miss? How to get around this?
Thanks!
Max
Max S.
RPI 3 B+ with Stellarmate OS.
Nikon D5300. 180 mm f/2.8 antique Nikon lens. Tamron AF 28-75mm f/2.8.
AT72EDII refractor. ASI1600MC Pro. ZWO ASI294MC Pro
ZWO ASI120MC-S on ZWO 30F4 MiniScope.
SW AZ-GTi mount in EQ mode.
Last edit: 7 months 6 days ago by maxthebuilder.
7 months 6 days ago #33556

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Replied by knro on topic Polar Alignment is not working right - no refresh

What camera? Please edit your signature and add your equipment so it's easier to provide support in the future.
Jasem Mutlaq
Support INDI & Ekos; Get StellarMate Astrophotography Gadget.
How to Submit Logs when you have problems?
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7 months 6 days ago #33561

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Replied by pentaxian23 on topic Polar Alignment is not working right - no refresh

Just guessing but It sounds like you have a very slow connection to the camera. If you are using wifi and are too far you can get very slow response that will cause that.
7 months 6 days ago #33563

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Replied by maxthebuilder on topic Polar Alignment is not working right - no refresh

Sorry.
Added the info.
Nikon DSLR and ASI120MC-S. AZ-GTi mount.

INDI server was running on RPI.
Mount wifi-connected to RPI
Cameras usb-connected to RPI.
No hub.
RPI wire-connected to home router.

KStars/Ekos on Windows 7 desktop (with answr). Tried both 2.9.8 and 3.0.0.
Tried KStars/Ekos (3.0.0) directly on RPI.
Same result.

ASI Live View works (10-11 FPS)
I was using it unbinned (in Align module) since plate-solving was failing often with 2x2 binning

Thanks!
Max S.
RPI 3 B+ with Stellarmate OS.
Nikon D5300. 180 mm f/2.8 antique Nikon lens. Tamron AF 28-75mm f/2.8.
AT72EDII refractor. ASI1600MC Pro. ZWO ASI294MC Pro
ZWO ASI120MC-S on ZWO 30F4 MiniScope.
SW AZ-GTi mount in EQ mode.
Last edit: 7 months 5 days ago by maxthebuilder.
7 months 5 days ago #33586

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Replied by maxthebuilder on topic Polar Alignment is not working right - no refresh

I was not far and it was a wired connection.
CCD's Live View works fine with 10-11 FPS rate.
Thanks!

pentaxian23 wrote: Just guessing but It sounds like you have a very slow connection to the camera. If you are using wifi and are too far you can get very slow response that will cause that.

Max S.
RPI 3 B+ with Stellarmate OS.
Nikon D5300. 180 mm f/2.8 antique Nikon lens. Tamron AF 28-75mm f/2.8.
AT72EDII refractor. ASI1600MC Pro. ZWO ASI294MC Pro
ZWO ASI120MC-S on ZWO 30F4 MiniScope.
SW AZ-GTi mount in EQ mode.
7 months 5 days ago #33587

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Replied by knro on topic Polar Alignment is not working right - no refresh

Ok will check if I can reproduce this somehow.
Jasem Mutlaq
Support INDI & Ekos; Get StellarMate Astrophotography Gadget.
How to Submit Logs when you have problems?
Add your observatory info
7 months 5 days ago #33612

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Replied by maxthebuilder on topic Polar Alignment is not working right - no refresh

Hi Jasem,
Tried two more times with the same result.
Yesterday - two cameras and AZ-GTi mount. Nikon DSLR and ASI120MC-S. ASI was used for mount alignments.
Today - just the ASI and AZ-GTi mount.
Attaching the log (polar alignments start at 22:29:45) and a screenshot.

Symptoms:
-- start polar alignment
-- three rotations go as supposed to
-- in the end, when I hit "Refresh" I get one image (sometimes two) and then the procedure stalls saying "cannot capture while CCD is acquiring".

Thanks for looking into this!

File Attachment:

File Name: log_22-25-46.txt
File Size:1,868 KB
Max S.
RPI 3 B+ with Stellarmate OS.
Nikon D5300. 180 mm f/2.8 antique Nikon lens. Tamron AF 28-75mm f/2.8.
AT72EDII refractor. ASI1600MC Pro. ZWO ASI294MC Pro
ZWO ASI120MC-S on ZWO 30F4 MiniScope.
SW AZ-GTi mount in EQ mode.
Last edit: 6 months 3 weeks ago by maxthebuilder.
6 months 3 weeks ago #33981
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Replied by maxthebuilder on topic Polar Alignment is not working right - no refresh

Jasem/All,
Sorry. I have to bump this post...
I assume that the polar alignment procedure is working for everyone else.
Why it doesn't for me? Must be something in INDI settings or something.
Really strange. When I hit "refresh" in the end of the procedure, I am given one, sometimes two or three frames and then - no "refresh" anymore. Sometimes, if I wait long enough, it gives me a few more frames...
?
Thanks!
Max S.
RPI 3 B+ with Stellarmate OS.
Nikon D5300. 180 mm f/2.8 antique Nikon lens. Tamron AF 28-75mm f/2.8.
AT72EDII refractor. ASI1600MC Pro. ZWO ASI294MC Pro
ZWO ASI120MC-S on ZWO 30F4 MiniScope.
SW AZ-GTi mount in EQ mode.
Last edit: 6 months 3 weeks ago by maxthebuilder.
6 months 3 weeks ago #34067

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Replied by nmac on topic Polar Alignment is not working right - no refresh

Hi, that seems to be a symptom of USB bandwidth. The camera is hanging downloading the images.
That's why it giving the message "cannot capture while CCD is acquiring". This is very common with ASI cameras, specially the 120 model.
Please check on ASI120 INDI settings if the value is higher than 40.
This also happened to me some time ago but guiding. The ASI 120 doesn't "like" values above 40 on some USB chipsets.
Also, are you using it with an HUB or directly connected? You have the "S" version (USB3), try to connect it on an USB2 port.
(PT) SC@ROS Observatory
TS 6" F4 Newtonian / Canon 550D / GPU CC / Datyson T7M / Arduino Moonlite DC Clone- HEQ5 Pro
Explore Scientific 80APO - 120ST / G2-8300FW5 / ES FF 2" / ASI120MM - Arduino Moonlite DC Clone - Vixen GPD2
www.flickr.com/photos/139335144@N03/
Last edit: 6 months 3 weeks ago by nmac.
6 months 3 weeks ago #34068

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Replied by pentaxian23 on topic Polar Alignment is not working right - no refresh

Try binning 2x2 - cuts the bandwidth requirement. I think someone pointed out that this will give a lot more dependable results.
The following user(s) said Thank You: nmac
6 months 3 weeks ago #34074

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Replied by nmac on topic Polar Alignment is not working right - no refresh

pentaxian23 wrote: Try binning 2x2 - cuts the bandwidth requirement. I think someone pointed out that this will give a lot more dependable results.


Good suggestion, I use it too, and it seems also more stable on 2x2 bin.
(PT) SC@ROS Observatory
TS 6" F4 Newtonian / Canon 550D / GPU CC / Datyson T7M / Arduino Moonlite DC Clone- HEQ5 Pro
Explore Scientific 80APO - 120ST / G2-8300FW5 / ES FF 2" / ASI120MM - Arduino Moonlite DC Clone - Vixen GPD2
www.flickr.com/photos/139335144@N03/
6 months 3 weeks ago #34076

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Replied by maxthebuilder on topic Polar Alignment is not working right - no refresh

Thank you guys!
I did try binning 2x2 - no change.
Will try to adjust the bandwidth.
The camera works fine in Live View mode - no hiccups.
Max S.
RPI 3 B+ with Stellarmate OS.
Nikon D5300. 180 mm f/2.8 antique Nikon lens. Tamron AF 28-75mm f/2.8.
AT72EDII refractor. ASI1600MC Pro. ZWO ASI294MC Pro
ZWO ASI120MC-S on ZWO 30F4 MiniScope.
SW AZ-GTi mount in EQ mode.
6 months 2 weeks ago #34198

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