pauledd replied to the topic 'DIY Flatfield Dustcover with RPi' in the forum. 3 weeks ago

Wow, that looks quite nice! I might consider 3d printing too if my aluminium cap idea fails but I dont own such a printer, and printing 4 ore more prototypes via online service might get very expensive...

I managed to get the ServoBlaster Cap work. Absolutly no errors during compilation! Servo moves as expected in indi :side:
It was indeed a faulty indi installation. Maybe I forgot to do "make install"... I will double check in future to prevent mass panic ;)

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pauledd replied to the topic 'DIY Flatfield Dustcover with RPi' in the forum. 3 weeks ago

hi Magnus_e,

Thanks for your fast response, please dont try to do anything now! I think I found the error.
I think I have a faulty libindi installation... I will report back soon :)

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pauledd replied to the topic 'DIY Flatfield Dustcover with RPi' in the forum. 3 weeks ago

My first hardware arrived. As I unboxed my servo I was shocked about the size: it looks to small!
I realized that I ordered a mini-Servo :pinch:
servo_mini.jpg

It might be hard to attach an dustcap to this tiny thing but the specs say it can handle a lot of weight.
I'll simply use it to get some practising with servo motors and test it later with load attached.


I encounterd some problems following the indilib DIY page .
Firstly, the "contents" Box does not hyperlink any point after 4.
Installing ServoBlaster, no problem. Servo responds to move commands.

But for INDI ServoBlaster Cap (5.5) I get an error while trying to compile:

cmake -DCMAKE_INSTALL_PREFIX=/usr . ..
-- The CXX compiler identification is GNU 4.9.3
-- Check for working CXX compiler: /usr/bin/c++
-- Check for working CXX compiler: /usr/bin/c++ -- works
-- Detecting CXX compiler ABI info
-- Detecting CXX compiler ABI info - done
-- Detecting CXX compile features
-- Detecting CXX compile features - done
-- Found PkgConfig: /usr/bin/pkg-config (found version "0.29.1") 
-- Checking for module 'libindi'
--   Found libindi, version 1.1.0
-- Found INDI: /usr/include/libindi (found version "1.1.0") 
-- Found INDI-DRIVERS: /usr/local/lib/libindidriver.so
-- Configuring done
-- Generating done
-- Build files have been written to: /home/pi/build/indi_servoblaster_cap/build

 LANG=en sudo make install
Password: 
[ 33%] Building CXX object CMakeFiles/indi_servoblaster_cap.dir/servoblaster_cap/servoblaster_cap.cpp.o
In file included from /home/pi/build/indi_servoblaster_cap/servoblaster_cap/servoblaster_cap.cpp:24:0:
/home/pi/build/indi_servoblaster_cap/servoblaster_cap/servoblaster_cap.h:31:34: fatal error: indidustcapinterface.h: No such file or directory
 #include "indidustcapinterface.h"
                                  ^
compilation terminated.
make[2]: *** [CMakeFiles/indi_servoblaster_cap.dir/build.make:63: CMakeFiles/indi_servoblaster_cap.dir/servoblaster_cap/servoblaster_cap.cpp.o] Error 1
make[1]: *** [CMakeFiles/Makefile2:68: CMakeFiles/indi_servoblaster_cap.dir/all] Error 2
make: *** [Makefile:128: all] Error 2
It seems it expects "indidustcapinterface.h" and "indilightboxinterface.h" in the "../servoblaster_cap" directory.
So I copied them from "indi/libindi/libs/indibase" to there.

Next I get a load of other errors:
[Warning: Spoiler!]

Maybe the author of the driver is here on board or maybe anyone can find what's the problem here? I would post an issue on github but for this repository I cant see any "Issues" page.

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pauledd created a new topic ' some thoughts that came up doing native captures...' in the forum. 4 weeks ago

I find it's a bit annoying when I capture NATIVE images (canons raw) they always pop up preview and occupy my whole screen. Even when I resize or close it, it returns to full size with the next exposure. It would be really nice if the preview window for the native captures would behave the same way like the fitsviewer that does it perfectly in my eyes. And an option to disable previewing right on the capture tab would be nice, didnt we already had this some time ago?

It would be also nice to have the preview of native images in the summary capture preview (if native format was selected).

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pauledd replied to the topic 'Ekos Polar Alignment Assistant (Beta) is here!' in the forum. 4 weeks ago

yes I'll do that. By the way, my yesterday test session did run smoothly, no alignment errors, no crashes! Really nice :)

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pauledd replied to the topic 'Ekos Polar Alignment Assistant (Beta) is here!' in the forum. 1 month ago

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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pauledd replied to the topic 'Ekos Polar Alignment Assistant (Beta) is here!' in the forum. 1 month ago

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:
www.youtube.com/watch?v=ItY9EIJxpHE&feature=youtu.be

Log:

File Attachment:

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


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pauledd replied to the topic 'Got no stars is gsc installed error | SOLVED' in the forum. 1 month ago

I dont get It, how do I install gsc on non ubuntu system (gentoo)? Jasem can you please provide a link for the package again, that I can do cmake with it?

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pauledd replied to the topic 'Got no stars is gsc installed error | SOLVED' in the forum. 1 month ago

As none of the mentioned links work anymore here is the source link for the Guide Star Catalog:
gsss.stsci.edu/Catalogs/GSC/GSC1/GSC1.htm

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pauledd replied to the topic 'Image Autoguiding' in the forum. 1 month ago

What I do not understand is that 15 seconds exposure mentioned in the video. If I remember correctly he said he broke the exposures into 15s subexposures and sum them in ram for the final exposure for
the image autoguiding with the main camera. Then another person in the video asked for that 15 seconds because astroimaging would normaly use exposures 1 to 15 minutes and he said you could also use the guiding scope to do the image autoguiding and use the main camera for longer exposures. That was the point where I was wondering because at the beginning of his presentation he claimed the errors that are introduced by those other methods to guide (fov, differential flexure,jitter) and then he recommends one of those to have longer exposures on the main camera. Maybe I missunderstood something :oops:

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pauledd replied to the topic 'DIY Flatfield Dustcover with RPi' in the forum. 1 month ago

Thank you, I'll do that when I finish the hardware part and everything works manually.

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pauledd replied to the topic 'DIY Flatfield Dustcover with RPi' in the forum. 1 month ago

I am not shure about the FlipFlap but when you say "command set" you mean I need to built some kind of USB controller to drive my dustcover with the FlipFlat driver?
:whistle: thats far beyond my skills, then I will stick to the ServoBlaster and wiringpi like in the article.

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pauledd created a new topic ' DIY Flatfield Dustcover with RPi' in the forum. 1 month ago

Hi there

Since I discovered a regional dealer that got flatfield foils with a evenly white spectrum
I plan to build a DIY flatfield dustcover in the next 2 to x months.
My plan is to follow the nice article
indilib.org/support/tutorials/165-diy-au...telescope-cover.html
but since I never had anything to do with servo motors its a bit unclear to me
what kind of servo I should look for. Especially what force and what gear (metal or plastic).
And of cause it should be as cheap as possible.

I currently focus on the BMS-390 DMH servo that has metal gear and a force of 46NM/cm/4.8V.
That mean that it should handle about 4,6 kilogram 1cm away from the axis. 10cm away makes
460 gramms. My flatfieldfoil will be taped on an 22x22x0,1cm aluminium plate that weights about 200g.

The flatfield would be switched on/off by a relay.
Now my qestion is would it be possible to integrate the flatfield into indi, is there already an solution in indi or do I need to write a new driver
for that.

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