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#1
October 27th 07, 08:58 AM
posted to alt.binaries.pictures.astro
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ASTRO: 17P Images
Took a set of images last night. Total of 30, 10s shots with 8" LX200
and ST-7. The greyscale image is pretty much what I see in the eyepiece. The false colour image shows some interesting detail. For the the third image, I rotated the original by 3 degrees and subtracted it. Everything processed with iraf and ds9. Had another look tonight - can't believe how bright it is. Eric. -- "I feel like I am being nibbled to death by a cat" -Londo Molari 
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#2
October 27th 07, 09:37 AM
posted to alt.binaries.pictures.astro
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ASTRO: 17P Images
that's cool Eric
I like the idea of rotating one a small amount relative to the other to show some additional detail "Eric" wrote in message news:rcCUi.29607$GO5.20596@edtnps90... Took a set of images last night. Total of 30, 10s shots with 8" LX200 and ST-7. The greyscale image is pretty much what I see in the eyepiece. The false colour image shows some interesting detail. For the the third image, I rotated the original by 3 degrees and subtracted it. Everything processed with iraf and ds9. Had another look tonight - can't believe how bright it is. Eric. -- "I feel like I am being nibbled to death by a cat" -Londo Molari
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#3
October 27th 07, 03:21 PM
posted to alt.binaries.pictures.astro
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ASTRO: 17P Images
i guess you did the equivalent of this:
http://astrosurf.com:80/~buil/us/iris/comet/comet.htm is that right? "Eric" wrote in message news:rcCUi.29607$GO5.20596@edtnps90... Took a set of images last night. Total of 30, 10s shots with 8" LX200 and ST-7. The greyscale image is pretty much what I see in the eyepiece. The false colour image shows some interesting detail. For the the third image, I rotated the original by 3 degrees and subtracted it. Everything processed with iraf and ds9. Had another look tonight - can't believe how bright it is. Eric. -- "I feel like I am being nibbled to death by a cat" -Londo Molari
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#4
October 27th 07, 05:21 PM
posted to alt.binaries.pictures.astro
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ASTRO: 17P Images
Yup.
I guess 'Rotational Gradient' must be 'RG processing', eh ? E. Richard Crisp wrote: i guess you did the equivalent of this: http://astrosurf.com:80/~buil/us/iris/comet/comet.htm is that right? "Eric" wrote in message news:rcCUi.29607$GO5.20596@edtnps90... Took a set of images last night. Total of 30, 10s shots with 8" LX200 and ST-7. The greyscale image is pretty much what I see in the eyepiece. The false colour image shows some interesting detail. For the the third image, I rotated the original by 3 degrees and subtracted it. Everything processed with iraf and ds9. Had another look tonight - can't believe how bright it is. Eric. -- "I feel like I am being nibbled to death by a cat" -Londo Molari -- "I feel like I am being nibbled to death by a cat" -Londo Molari
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#5
October 27th 07, 06:05 PM
posted to alt.binaries.pictures.astro
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ASTRO: 17P Images
that's my conclusion
try adding a bias offset of about 15000 adu before subtracting to avoid that black saturated spot "Eric" wrote in message news:bAJUi.64208$%B2.6329@edtnps82... Yup. I guess 'Rotational Gradient' must be 'RG processing', eh ? E. Richard Crisp wrote: i guess you did the equivalent of this: http://astrosurf.com:80/~buil/us/iris/comet/comet.htm is that right? "Eric" wrote in message news:rcCUi.29607$GO5.20596@edtnps90... Took a set of images last night. Total of 30, 10s shots with 8" LX200 and ST-7. The greyscale image is pretty much what I see in the eyepiece. The false colour image shows some interesting detail. For the the third image, I rotated the original by 3 degrees and subtracted it. Everything processed with iraf and ds9. Had another look tonight - can't believe how bright it is. Eric. -- "I feel like I am being nibbled to death by a cat" -Londo Molari -- "I feel like I am being nibbled to death by a cat" -Londo Molari
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#6
October 27th 07, 11:35 PM
posted to alt.binaries.pictures.astro
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ASTRO: 17P Images
Try these on for size... I took the absolute value after doing the
calculation. The first is a 5 degree rotation as before. The second is a laplacian (second derivative). Eric. Richard Crisp wrote: that's my conclusion try adding a bias offset of about 15000 adu before subtracting to avoid that black saturated spot "Eric" wrote in message news:bAJUi.64208$%B2.6329@edtnps82... Yup. I guess 'Rotational Gradient' must be 'RG processing', eh ? E. Richard Crisp wrote: i guess you did the equivalent of this: http://astrosurf.com:80/~buil/us/iris/comet/comet.htm is that right? "Eric" wrote in message news:rcCUi.29607$GO5.20596@edtnps90... Took a set of images last night. Total of 30, 10s shots with 8" LX200 and ST-7. The greyscale image is pretty much what I see in the eyepiece. The false colour image shows some interesting detail. For the the third image, I rotated the original by 3 degrees and subtracted it. Everything processed with iraf and ds9. Had another look tonight - can't believe how bright it is. Eric. -- "I feel like I am being nibbled to death by a cat" -Londo Molari -- "I feel like I am being nibbled to death by a cat" -Londo Molari -- "I feel like I am being nibbled to death by a cat" -Londo Molari
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#7
October 28th 07, 03:04 AM
posted to alt.binaries.pictures.astro
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ASTRO: 17P Images
interesting result from a logical set of processing ideas
visualization is always an interesting thing "Eric" wrote in message news:03PUi.64244$%B2.56665@edtnps82... Try these on for size... I took the absolute value after doing the calculation. The first is a 5 degree rotation as before. The second is a laplacian (second derivative). Eric. Richard Crisp wrote: that's my conclusion try adding a bias offset of about 15000 adu before subtracting to avoid that black saturated spot "Eric" wrote in message news:bAJUi.64208$%B2.6329@edtnps82... Yup. I guess 'Rotational Gradient' must be 'RG processing', eh ? E. Richard Crisp wrote: i guess you did the equivalent of this: http://astrosurf.com:80/~buil/us/iris/comet/comet.htm is that right? "Eric" wrote in message news:rcCUi.29607$GO5.20596@edtnps90... Took a set of images last night. Total of 30, 10s shots with 8" LX200 and ST-7. The greyscale image is pretty much what I see in the eyepiece. The false colour image shows some interesting detail. For the the third image, I rotated the original by 3 degrees and subtracted it. Everything processed with iraf and ds9. Had another look tonight - can't believe how bright it is. Eric. -- "I feel like I am being nibbled to death by a cat" -Londo Molari -- "I feel like I am being nibbled to death by a cat" -Londo Molari -- "I feel like I am being nibbled to death by a cat" -Londo Molari
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