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Converting Canon CRW (RAW) Files to FITS
Any recommendations on software to do the conversion in Subject?
-- Wayne Watson (Watson Adventures, Prop., Nevada City, CA) (121.015 Deg. W, 39.262 Deg. N) GMT-8 hr std. time) Obz Site: 39° 15' 7" N, 121° 2' 32" W, 2700 feet Web Page: www.speckledwithstars.net/ |
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Converting Canon CRW (RAW) Files to FITS
On Thu, 21 Aug 2008 12:18:09 -0700, "W. eWatson"
wrote: Any recommendations on software to do the conversion in Subject? You can use Photoshop with FitsPlug (the free version will work fine for this). Or you can use MaximDL. More generally, you can convert the RAW files to 16-bit TIFF (the software that comes with your camera can do this) and then use almost any astronomical imaging app, including free ones like Iris, to read in the TIFF and save as FITS. Keep in mind that there is no standard for saving color images in FITS format. Different applications do so differently, and at a minimum you may need to move around color planes. If you want to be absolutely safe, split your raws into RGB channels and save each as its own FITS file. _________________________________________________ Chris L Peterson Cloudbait Observatory http://www.cloudbait.com |
#3
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Converting Canon CRW (RAW) Files to FITS
Chris L Peterson wrote:
On Thu, 21 Aug 2008 12:18:09 -0700, "W. eWatson" wrote: Any recommendations on software to do the conversion in Subject? You can use Photoshop with FitsPlug (the free version will work fine for this). Or you can use MaximDL. More generally, you can convert the RAW files to 16-bit TIFF (the software that comes with your camera can do this) and then use almost any astronomical imaging app, including free ones like Iris, to read in the TIFF and save as FITS. Keep in mind that there is no standard for saving color images in FITS format. Different applications do so differently, and at a minimum you may need to move around color planes. If you want to be absolutely safe, split your raws into RGB channels and save each as its own FITS file. _________________________________________________ Chris L Peterson Cloudbait Observatory http://www.cloudbait.com Thanks, I'll likely go the Iris route, since I'm just learning it now. It's likely I'll be converting the images to grey scale, since I'm going to be taking images of spectra. It's somewhat odd that Canon has two cameras for astrophotography, but they don't have software to convert RAW to FITS. -- Wayne Watson (Watson Adventures, Prop., Nevada City, CA) (121.015 Deg. W, 39.262 Deg. N) GMT-8 hr std. time) Obz Site: 39° 15' 7" N, 121° 2' 32" W, 2700 feet Web Page: www.speckledwithstars.net/ |
#4
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Converting Canon CRW (RAW) Files to FITS
"W. eWatson" wrote in message ... Chris L Peterson wrote: On Thu, 21 Aug 2008 12:18:09 -0700, "W. eWatson" wrote: Any recommendations on software to do the conversion in Subject? You can use Photoshop with FitsPlug (the free version will work fine for this). Or you can use MaximDL. More generally, you can convert the RAW files to 16-bit TIFF (the software that comes with your camera can do this) and then use almost any astronomical imaging app, including free ones like Iris, to read in the TIFF and save as FITS. Keep in mind that there is no standard for saving color images in FITS format. Different applications do so differently, and at a minimum you may need to move around color planes. If you want to be absolutely safe, split your raws into RGB channels and save each as its own FITS file. _________________________________________________ Chris L Peterson Cloudbait Observatory http://www.cloudbait.com Thanks, I'll likely go the Iris route, since I'm just learning it now..... For what it's worth (maybe not much): I've had problems using iris to directly open Canon raw files. It will in fact do it, but everything turns out way too green. What does work (as Chris suggested) is to use the Canon software to convert the raws to tiff and then open the files in iris to stack, etc. That has worked for me. George N |
#5
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Converting Canon CRW (RAW) Files to FITS
In article ,
W. eWatson wrote: Chris L Peterson wrote: On Thu, 21 Aug 2008 12:18:09 -0700, "W. eWatson" wrote: Any recommendations on software to do the conversion in Subject? You can use Photoshop with FitsPlug (the free version will work fine for this). Or you can use MaximDL. More generally, you can convert the RAW files to 16-bit TIFF (the software that comes with your camera can do this) and then use almost any astronomical imaging app, including free ones like Iris, to read in the TIFF and save as FITS. Keep in mind that there is no standard for saving color images in FITS format. Different applications do so differently, and at a minimum you may need to move around color planes. If you want to be absolutely safe, split your raws into RGB channels and save each as its own FITS file. _________________________________________________ Chris L Peterson Cloudbait Observatory http://www.cloudbait.com Thanks, I'll likely go the Iris route, since I'm just learning it now. It's likely I'll be converting the images to grey scale, since I'm going to be taking images of spectra. It's somewhat odd that Canon has two cameras for astrophotography, but they don't have software to convert RAW to FITS. Canon no longer produces these cameras for astrophotography... -- Wayne Watson (Watson Adventures, Prop., Nevada City, CA) (121.015 Deg. W, 39.262 Deg. N) GMT-8 hr std. time) Obz Site: 39° 15' 7" N, 121° 2' 32" W, 2700 feet Web Page: www.speckledwithstars.net/ -- ---------------------------------------------------------------- Paul Schlyter, Grev Turegatan 40, SE-114 38 Stockholm, SWEDEN e-mail: pausch at stjarnhimlen dot se WWW: http://stjarnhimlen.se/ |
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Converting Canon CRW (RAW) Files to FITS
"George Normandin" wrote in message ... For what it's worth (maybe not much): I've had problems using iris to directly open Canon raw files. It will in fact do it, but everything turns out way too green. What does work (as Chris suggested) is to use the Canon software to convert the raws to tiff and then open the files in iris to stack, etc. That has worked for me. George N You can convert the canon files directly into fits in Iris. The green is solved by selecting a small square of background and running the command "black" Then open the digital photo tab and select RGB balance. A good starting point is red 2.0 green 1.0 blue 1.2 Quite good instructions can be found here http://astro.ai-software.com/article...dslr_iris.html Terry B Armidale NSW |
#7
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Converting Canon CRW (RAW) Files to FITS
"Terry B" wrote For what it's worth (maybe not much): I've had problems using iris to directly open Canon raw files. It will in fact do it, but everything turns out way too green. What does work (as Chris suggested) is to use the Canon software to convert the raws to tiff and then open the files in iris to stack, etc. That has worked for me. George N You can convert the canon files directly into fits in Iris. The green is solved by selecting a small square of background and running the command "black" Then open the digital photo tab and select RGB balance. A good starting point is red 2.0 green 1.0 blue 1.2 Quite good instructions can be found here http://astro.ai-software.com/article...dslr_iris.html Terry B Armidale NSW I did all of that stuff Terry. It never worked for me. I ended up with open star clusters with nothing but green stars. Strangely, if I used the Canon's jpg files the colors came out right. When I open regular photographs in iris the Canon raws come out strongly green, but jpgs come out OK. I'm now testing a Hutech mod'ed Canon DSLR, so I'll give it another shot with using iris to directly open the raws, but I can always convert them to tiffs before opening. George N |
#8
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Converting Canon CRW (RAW) Files to FITS
"W. eWatson" wrote in message ... Any recommendations on software to do the conversion in Subject? While curious about the quality of images captured RAW by a particular Fuji digital camera I stumbled on the free program DCRAW which claims to be able to convert RAW files from hundreds of different cameras into TIFF format. Three months ago I downloaded the C language source and compiled it with the GCC compiler of my CYGWIN package under WindowsXP and was able to correctly convert a RAW image posted by another photographer. I have done nothing with it since. DCRAW is a command line application. Look for it at http://cybercom.net:80/~dcoffin/ by clicking on "Decoding raw digital photos in Linux". Tim |
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