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han59

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About han59

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  1. No you can't. Pinpoint is a commercial product. I didn't investigate using it. I know that Pointpoint Light can't be accessed remotely so only the full version could be used, but since there free solvers available there is no need to use it. Han
  2. Hello Martin, You could place the program astap.exe in any directory or map. It could be under c:\astap or c:\Program Files\astap or simple on your desktop. Under c:\Program Files\astap would be the most appropriate. For ANSVR the CYGWIN directory will be at C:\Users\user_name\AppData\Local\cygwin_ansvr\bin\bash.exe For Astrotortilla as c:\Cygwin\bin\bash.exe Both will install a 2010 version of Astrometry.net and will perform equally. There are two new options in the stackmenu. Set it as follows: Show solving show the Astrometry.net solving console. You better keep this on to see what happening. Keep console open: This should be off and is only required to see an solving error. Search area: This can be large 10 degrees or so. Pixel tolerance: Can be off. Extra options: Can be blank. --Downsample 2 or --Downsample 4 helps sometimes with solving. For noisy images you could experiment with --sigma 10 or higher. For very large images Astrometry.net seems to provide a more accurate orientation angle and therefore result. I like to hear how it performs. You could also join the Yahoo group just started up or send me directly a mail. Han
  3. I managed to solve the two images you send me and then stacking was then easy. With an astrometry.net setting for downsampling and it can solve the images. It requires a little tweaking and each image is seen as different by astrometry.net. I did it with the following two commands: --downsample 2 --sigma 10 and for the orther image as: --downsample 9 Alternatively you could solve them online and stack the result using the produced .new files. In the new ASTAP version ß0.1.1 you can keep the console open and see what for error the solver astrometry.net error is reporting. The stack of the two images provided is not good. The field is too distorted and alignment is poor. A focal length of 30 mm is no success. Longer focal lengths are required. Most likely the zoom lens at 55 mm will also give problems. Anyhow the program made significant progress. Also the SIP polynomials from the solution are included. The should help but not in all cases. 2 images of 30mm focal length stacked:
  4. Did some testing this morning with OSC images from my QHY8 and noticed Bayer conversion for color is not applied if astrometry.net is used. Is fixed in version ß0.0.8a
  5. I had a brief look to the API. To get that working will need some time. The images don't need to be of good quality. For astrometry.net switch in the in TAB astrometry the pixel size limitation off and set the position range to 10 degrees or ever higher. That should still give a quick solving. It could that be that the OSC images are more problematic. Anyhow if you can't solve, send me one or two pictures and I will have a look. It is a good test case. As an experiment you could just upload an image to nova.astrometry.net without any information. The online solver is very good and will solve almost everything. This will give some clue of the position and pixelsize. Anyhow astrometric/plate solving doesn't seems to be easy for everybody. But as soon it is working, it is of great use for pointing your telescope (unless your just use wide field and can see everything)
  6. You have download one of these: Installation of astrometry.net (preferred option via ANSVR or Astrotortilla) or Platesolve2 including star database as the astrometric solver. Astrometry.net is a pretty large package with the index files. For files made with DSLR, having no header with info, you have to enter roughly the 1) position in the viewer and 2) specify the pixel size and focal length in TAB astrometry of the stack menu. Acquisition programs producing FITS files will have this info already included in the FITS header. I think it will be good to have a link to an online solver. I'm not sure if this can be done easily. Will have a look to this. In principle you only need the WCS files produced by astrometry.net. It should be possible to request and download them manually but automated will be much more convenient. Han Later, the ANSVR link contains a newer compilation of astrometry.net made for ASP. It runs as a Linux program under Cygwin in MSWindows. Follow up to installation step 9. The download of the index files was pretty quick done in less 15 minutes. The link you have to put in ASTAP is as follows: C:\Users\user_name\AppData\Local\cygwin_ansvr\bin\bash.exe Adapt "user_name" to the login name used in Windows. It will still not solve an image of 37.2 x 24.6 degrees. The index files run up to 33 degrees. It solves but then stop with an error.
  7. For the moment the solvers can't handle a image made with a 35 mm lens. PlateSolve2 doesn't find a solution and the local Astrometry.net finds a solution but gives an error. So it will work only for longer focal lengths. Anyhow I fixed an error using PlateSolve2 and uploaded version ß0.0.8.
  8. Thanks for the files. The files can be read without problem. The exception is caused by a missing flat file. It should be able to handle but I forget a check in the code. I'm trying now to stack them. The images are made with a short focal length around 50 mm. Both local Astrometry.net and PlateSolve2 have a problem with that. Need a few hours to figure this out.
  9. There is no log file. Most likely it has problems with the FITS file format. Viewing should then also be problematic. Just send me one of FITS file you try to stack. I send you my email address in a private message. In the debugger I should be able to see where it goes wrong.
  10. My new free stacking program ASTAP, Astrometric STAcking Program is just released as version ß0.0.7a. I'm looking for beta testers to test the functionality and suggest improvements. It uses FITS files as input and is released currently for MS-Windows only but a Linux version will follow. Conversion from PNG, TIFF to FITS is possible but only in 8/24 bit resolution. Webpage: http://www.hnsky.org/astap.htm Description: ASTAP is a free stacking program for deep sky images. This program can view and stack astronomical FITS images using an astrometric solution. It uses a local version of Astrometry.net or PlateSolve2 to find the astrometric solution. With the solution the astronomical position of each pixel can be calculated. Main features: Stacking images including Dark Frame and Flat Field correction. Filtering of deep sky images based on HFD value and average value. Automatic call to local Astrometry.net or Platesolve2 for the astrometric solution. FITS viewer with swipe functionality. Results can be saved to 16 bit or float (-32) FITS file Export to 16 or 32 bit integer TIFF files, grayscale or color or simple PNG or JPEG. Mosaic building covering large areas using the astrometric linear solution. Some pixel math functions and digital development process
  11. Just released new ASTAP, Astrometric STAcking Program ß0.07 http://www.hnsky.org/astap.htm ASTAP is a free stacking program for deep sky images. This program can view and stack astronomical FITS images using an astrometric solution. It uses local Astrometry.net or PlateSolve2 to find the astrometric solution. With the solution the astronomical position of each pixel can be calculated. Main features: Stacking images including Dark Frame and Flat Field correction Filtering of deep sky images based on HFD value and average value. Automatic call to Platesolve2 for the astrometric solution. FITS viewer with swipe functionality. Results can be saved to 16 bit or float (-32) FITS file Export to 16 or 32 bit integer TIFF files, grayscale or color or simple PNG or JPEG. Mosaic building covering large areas using the astrometric linear solution. Some pixel math functions and digital development process
  12. I have something simular with an HEQ5, EMOD 2.0i and the HNSKY planetarium program. It seems to occur random. it helps if you move the telescope a small portion, then sync roughly the correction and then go to the target again. After that it syncs on the target. I suspect it is EQMOD. It didn't happen as far I can remember with the EQMOD 1.xx version. Han
  13. The "Hallo northern sky" planetarium program, a PC application has now a swipe screen functionality. Here a short Youtube impression: https://www.youtube.com/watch?v=evzHu73Yvjg&feature=youtu.be Swipe can be switched on/off in the settings menu. (ctrl-E) Comments, user requests and feedback are welcome. Han hnsky.org
  14. Hello Alexander, Good initiative. It would be nice to have more outlines in the public domain. The make outlines of deep sky objects, a good tool is required to become productive. For people who are interested, HNSKY provides a drawing tool where you can draw lines and edit the points with DSS images as background. Result is saved in CSV format. Here a YouTube video from 2015 showing how it is done: https://www.youtube.com/watch?v=tW-kU6ghTcs Work flow: - Download a DSS image as background.(red or blue) Or load any other plate solved image. - Draw the outline by clicking with the mouse. - Edit, remove or add points as required. - Save result supplement 2 (CSV format) It is not a full CAD program, but a simple routine. However, it allows making a deep sky outline in 5 minutes. The CSV format can be quickly converted to another format. Every line contains a RA, DEC position and move or draw line instruction. Note that most deep sky objects don't have a clear boundary and are better represented by an image of different gray levels. I have tried to make a new outline of the Milky Way with a software program but noted that the outlines can be placed almost everywhere depending on the detection level and gave up on that idea. Some outline examples are available in HNSKY Regards, Han An example:
  15. PlateSolve2 frontend program

    The HNS_FV, FITS viewer program is significantly further developed. The program accepts besides all FITS types also PNG and JPG files and can provide them to Platesolve2 as FITs for plate solving. Only the approximate coordinates and dimensions needs to be provided The viewer has a swipe function and accept color FITS. Feedback is welcome. Han
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