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INDI Library v2.0.6 is Released (02 Feb 2024)

Bi-monthly release with minor bug fixes and improvements

problems with offline solving

  • Posts: 34
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HI, tried again and checked the FOV... using my LX200 8" and the Canon the fov reults in 61'x 41'... with jpg it works (after 35sec) and with FITS... no... i did install all astrometry indices 4203 -4219 at /usr/share/astrometry
matthias
3 years 10 months ago #54370

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There is something wrong with your settings. I use a Nikon D3300 and that has no trouble solving, although it has 24 MP vs. 16MP on your Canon. But I use the RAW setting in the control panel , not the FITS image transfer.
I suggest asking Wouter for help with the Canon settings. He also uses a Canon DSLR on occasion and solving works just fine for him, also on an RC8.
3 years 10 months ago #54397

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It has been nearly a year since I last imaged with a Canon DSLR but I can try to help. Can you please take screenshots of the Align tab and of all four tabs in the popup that opens when you click on the options button at the lower right of the Align tab? Also, can you share the FITS file that fails at some location? Finally, why do you image in FITS? All stacking software are perfectly capable of handling CR2 files. But that's beside the points.


Wouter
3 years 10 months ago #54400

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Hallo El Corazon... that seems to be the problem... with L-jpg it works. so i try the RAW as native... when sending the fits file dirctly through the web at astrometry.net it takes some 5 min. to solve...
(result can be seen at www.worldwidetelescope.org/webclient/?wt...47.03313&fov=0.40753) so it works. but takes too long. see you nxt week, because weather changed to rain...
Matthias
3 years 10 months ago #54401

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In my hands, offline solving, even on a Pi4, is usually faster than online solving. Takes about 10s.
Perhaps dcraw is not installed or not accessible?
Anyway, you can solve these problem even when the skies are cloudy. That's the best time for this, actually. Just post the RAW and/or the FITS files and screenshots of your settings, as Wouter asks.
This is not an intrinsic Ekos problem. Lots of people use Canon cameras, from most of them you never hear because the system works right out of the box.
3 years 10 months ago #54402

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Good Morning (here in the Eifel, Germany) here is a link to my Server, where i placed some fits work... i tried with offline. Perhaps / hope you can "solve " the problem, because the solving function is quite helpful.
Sorry, no CR2 files (guess there was a problem to download it from cam with Kstars and Canon 5d classic) used it together with my old Meade LX200 8" (200/2000mm)

www.magentacloud.de/share/g5metn0zj2

Thanks at all Matthias
Last edit: 3 years 10 months ago by Matthias Greiner-Petter.
3 years 10 months ago #54411

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Good night from Chile Matthias,

I downloaded both FITS files and successfully solved them within 5 seconds on my MacBook with the latest KStars stable. I use astrometry.net and not sextractor by the way. There really is nothing wrong with those FITS files. So, please create those screenshots that I asked you about.

FYI I used the simulators in KStars and the "Load & Slew" option.


Wouter
3 years 10 months ago #54412

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oh, Hi just saw your comment, thanks... i placed a screenshot in that link... is it not enough?
cs matthias
3 years 10 months ago #54414

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OK, so this is the problem: You are using an LX200 reflector, which is an 8"/f10 telescope and a focal length of 8"=200mm x 10 = 2000 mm.

The information in your FITS files, however, shows a focal length of 600 mm and an aperture of 80 mm. Therefore, the solver is trying to solve the image with a 3.33 x mismatched pixel resolution and a 1.33 x mismatched FOV.
No wonder it can't find anything.

Looks like you may have entered your guide scope information instead of your primary telescope information in the respective fields in the Control panel.

Go into the mount tab and enter 200 mm for aperture and 2000 mm for focal length for your primary telescope, then the solver should have no problem completing.

Image #1
SIMPLE = T / file does conform to FITS standard
BITPIX = 8 / number of bits per data pixel
NAXIS = 3 / number of data axes
NAXIS1 = 4365 / length of data axis 1
NAXIS2 = 2912 / length of data axis 2
NAXIS3 = 3 / length of data axis 3
EXTEND = T / FITS dataset may contain extensions
COMMENT FITS (Flexible Image Transport System) format is defined in 'Astronomy
COMMENT and Astrophysics', volume 376, page 359; bibcode: 2001A&A...376..359H
INSTRUME= 'Canon DSLR EOS 5D (normal mode)' / CCD Name
TELESCOP= 'LX200 OnStep' / Telescope name
OBSERVER= 'Unknown ' / Observer name
OBJECT = 'M_51 ' / Object name
EXPTIME = 3.000000E+01 / Total Exposure Time (s)
CCD-TEMP= 0. / CCD Temperature (Celsius)
PIXSIZE1= 8.200000E+00 / Pixel Size 1 (microns)
PIXSIZE2= 8.200000E+00 / Pixel Size 2 (microns)
XBINNING= 1 / Binning factor in width
YBINNING= 1 / Binning factor in height
XPIXSZ = 8.200000E+00 / X binned pixel size in microns
YPIXSZ = 8.200000E+00 / Y binned pixel size in microns
FRAME = 'Light ' / Frame Type
IMAGETYP= 'Light Frame' / Frame Type
FOCALLEN= 6.00E+02 / Focal Length (mm)
APTDIA = 8.00E+01 / Telescope diameter (mm)
FOCUSPOS= 0 / Focus position in steps
SCALE = 2.819433E+00 / arcsecs per pixel
SITELAT = 5.056120E+01 / Latitude of the imaging site in degrees
SITELONG= 6.255970E+00 / Longitude of the imaging site in degrees
AIRMASS = 1.013823E+00 / Airmass
OBJCTRA = '13 29 51.59' / Object J2000 RA in Hours
OBJCTDEC= '47 11 58.27' / Object J2000 DEC in Degrees
RA = 2.024650E+02 / Object J2000 RA in Degrees
3 years 10 months ago #54421

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Hi, that seemed to be the solution... so i changed the spec as you told me... but no solution, then i changed the Fits Header Length and diameter to the LX200 spec... no solution. Then i did erase the hole Header and schwups after 10 sevc i had a positiv solution. So anything in the header is mismatched. Kstars is working with J2020.4 coordinates and fits has J2000 data... may be? where to change the J2020 data?
Matthias
3 years 10 months ago #54422

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Sorry, I didn’t realize that you put a screenshot there as well. It only shows one tab of the options panel, not all four. Anyway, I see that in the options you have “Use Scale” enabled. Whenever I have solver problems I always disagle that option and in fact by default switch it off now. Can you give that a try?


Wouter
3 years 10 months ago #54426

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ok folks, seems to work now, guess it was the wrong scaling, my fault... thanks again for your pation
Matthias
3 years 10 months ago #54427

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