| Topic: |
Science > Physics |
| User: |
"Ioannis" |
| Date: |
11 Sep 2005 09:46:14 AM |
| Object: |
Color Photos of Spectra |
For those doing astro and lab spectroscopy work, I have posted several
spectrum pictures taken with my hand-held spectroscope and with my Nikon
CoolPix digital camera.
All spectra are correctly calibrated against each other in terms of nm.
Note the Fraunhoffer absorption lines on the Solar Spectrum. D, H_{beta},
H_{gamma} and H_{delta} are visible. They are still a little weak, but my
small spectroscope has very small resolution.
Note also that the only "truly" monochromatic source among these, was the
Red Diode Laser, which emits in the vicinity of 660nm.
http://users.forthnet.gr/ath/jgal/spectroscope/amici.html
on my spectroscopy section:
http://users.forthnet.gr/ath/jgal/spectroscope/
Enjoy,
PS: The spectrum of the Propane gas burner is actually molecular and these
are bands, not lines. If anyone has an explanation on what the actual
wavelengths are, please feel free to explain. (Since Propane contains
C/O/H(?), and C's and O's ionization energies are relatively high, I would
expect these bands to be H related, but I am not sure).
--
I. N. Galidakis
http://users.forthnet.gr/ath/jgal/
Eventually, _everything_ is understandable
.
|
|
| User: "Androcles Androcles@ MyPlace.org" |
|
| Title: Re: Color Photos of Spectra |
11 Sep 2005 07:03:26 PM |
|
|
"Ioannis" <morpheus@olympus.mons> wrote in message
news:1126449980.13650@athnrd02...
| For those doing astro and lab spectroscopy work, I have posted several
| spectrum pictures taken with my hand-held spectroscope and with my
Nikon
| CoolPix digital camera.
Very nicely done. Can you get me spectra for beta-Perseus throughout its
70 hour period at, say, 1 hourly intervals?
Androcles.
.
|
|
|
| User: "Ioannis" |
|
| Title: Re: Color Photos of Spectra |
11 Sep 2005 07:12:11 PM |
|
|
Ο "Androcles" <Androcles@ MyPlace.org> έγραψε στο μήνυμα
news:iB3Ve.50961$2n6.3336@fe3.news.blueyonder.co.uk...
"Ioannis" <morpheus@olympus.mons> wrote in message
news:1126449980.13650@athnrd02...
| For those doing astro and lab spectroscopy work, I have posted several
| spectrum pictures taken with my hand-held spectroscope and with my
Nikon
| CoolPix digital camera.
Very nicely done.
Thanks Androcles.
Can you get me spectra for beta-Perseus throughout its
70 hour period at, say, 1 hourly intervals?
Heh, heh. From central Athens? Surely you jest :-)
Androcles.
--
I. N. Galidakis
http://users.forthnet.gr/ath/jgal/
Eventually, _everything_ is understandable
.
|
|
|
| User: "Androcles Androcles@ MyPlace.org" |
|
| Title: Re: Color Photos of Spectra |
11 Sep 2005 07:32:12 PM |
|
|
"Ioannis" <morpheus@olympus.mons> wrote in message
news:1126483942.988633@athnrd02...
|Ο "Androcles" <Androcles@ MyPlace.org> έγραψε στο μήνυμα
| news:iB3Ve.50961$2n6.3336@fe3.news.blueyonder.co.uk...
| >
| >
| > "Ioannis" <morpheus@olympus.mons> wrote in message
| > news:1126449980.13650@athnrd02...
| > | For those doing astro and lab spectroscopy work, I have posted
several
| > | spectrum pictures taken with my hand-held spectroscope and with my
| > Nikon
| > | CoolPix digital camera.
| >
| > Very nicely done.
|
| Thanks Androcles.
|
| > Can you get me spectra for beta-Perseus throughout its
| > 70 hour period at, say, 1 hourly intervals?
|
| Heh, heh. From central Athens? Surely you jest :-)
Oh dear... oh well, I tried. :) Thanks anyway.
Androcles.
|
| > Androcles.
| --
| I. N. Galidakis
| http://users.forthnet.gr/ath/jgal/
| Eventually, _everything_ is understandable
|
.
|
|
|
|
|
|
| User: "Androcles Androcles@ MyPlace.org" |
|
| Title: Re: Color Photos of Spectra |
11 Sep 2005 07:18:12 PM |
|
|
"Ioannis" <morpheus@olympus.mons> wrote in message
news:1126449980.13650@athnrd02...
| For those doing astro and lab spectroscopy work, I have posted several
| spectrum pictures taken with my hand-held spectroscope and with my
Nikon
| CoolPix digital camera.
|
| All spectra are correctly calibrated against each other in terms of
nm.
|
| Note the Fraunhoffer absorption lines on the Solar Spectrum. D,
H_{beta},
| H_{gamma} and H_{delta} are visible. They are still a little weak, but
my
| small spectroscope has very small resolution.
|
| Note also that the only "truly" monochromatic source among these, was
the
| Red Diode Laser, which emits in the vicinity of 660nm.
|
| http://users.forthnet.gr/ath/jgal/spectroscope/amici.html
|
| on my spectroscopy section:
| http://users.forthnet.gr/ath/jgal/spectroscope/
|
| Enjoy,
|
| PS: The spectrum of the Propane gas burner is actually molecular and
these
| are bands, not lines. If anyone has an explanation on what the actual
| wavelengths are, please feel free to explain. (Since Propane contains
| C/O/H(?), and C's and O's ionization energies are relatively high, I
would
| expect these bands to be H related, but I am not sure).
| --
| I. N. Galidakis
| http://users.forthnet.gr/ath/jgal/
| Eventually, _everything_ is understandable
Do you have an explanation why the cyan has bled toward the blue
and the violet appears as it does in the 6,000K CFL Triphosphor
Fluorescent (Hg+Phosphor) ?
Androcles
.
|
|
|
| User: "Ioannis" |
|
| Title: Re: Color Photos of Spectra |
11 Sep 2005 07:37:04 PM |
|
|
Ο "Androcles" <Androcles@ MyPlace.org> έγραψε στο μήνυμα
news:8P3Ve.51077$2n6.43580@fe3.news.blueyonder.co.uk...
[snip]
Do you have an explanation why the cyan has bled toward the blue
and the violet appears as it does in the 6,000K CFL Triphosphor
Fluorescent (Hg+Phosphor) ?
The 6,000K Triphosphor has a blindingly bright blue tint and in general has
increased bluish emission from the phosphors, peaking somewhere around
~450nm.
http://www.narva-bel.de/katalog/ti_spek.html
Color code: 860. Compare with the two triphosphors with lower color temp, to
its left (color code: 827 and 840), which don't have this bluish peak, which
correspond to the first two photographs of the 2,700K and the 4,000K
triphosphors.
In order to take photos of all 3 triphosphors relatively calibrated, I kept
the shutter speed the same on all 3, as a result the 6,000K triphosphor was
lightly overexposed on that area and this was the camera's response to the
increased blue emissions.
Androcles
--
I. N. Galidakis
http://users.forthnet.gr/ath/jgal/
Eventually, _everything_ is understandable
.
|
|
|
| User: "Androcles Androcles@ MyPlace.org" |
|
| Title: Re: Color Photos of Spectra |
11 Sep 2005 08:11:20 PM |
|
|
"Ioannis" <morpheus@olympus.mons> wrote in message
news:1126485434.453673@athnrd02...
|Ο "Androcles" <Androcles@ MyPlace.org> έγραψε στο μήνυμα
| news:8P3Ve.51077$2n6.43580@fe3.news.blueyonder.co.uk...
| [snip]
|
| > Do you have an explanation why the cyan has bled toward the blue
| > and the violet appears as it does in the 6,000K CFL Triphosphor
| > Fluorescent (Hg+Phosphor) ?
|
| The 6,000K Triphosphor has a blindingly bright blue tint and in
general has
| increased bluish emission from the phosphors, peaking somewhere around
| ~450nm.
|
| http://www.narva-bel.de/katalog/ti_spek.html
|
| Color code: 860. Compare with the two triphosphors with lower color
temp, to
| its left (color code: 827 and 840), which don't have this bluish peak,
which
| correspond to the first two photographs of the 2,700K and the 4,000K
| triphosphors.
|
| In order to take photos of all 3 triphosphors relatively calibrated, I
kept
| the shutter speed the same on all 3, as a result the 6,000K
triphosphor was
| lightly overexposed on that area and this was the camera's response to
the
| increased blue emissions.
|
| > Androcles
| --
| I. N. Galidakis
| http://users.forthnet.gr/ath/jgal/
| Eventually, _everything_ is understandable
|
Ok, thanks.
Androcles
.
|
|
|
| User: "" |
|
| Title: Re: Color Photos of Spectra |
11 Sep 2005 08:49:40 PM |
|
|
| Eventually, _everything_ is understandable
|
Ok, thanks.
*************
No "eventually" about it. Cybernetics already has it wrapped up.
Welcome to Principia Cybernetica Web
http://pespmc1.vub.ac.be/
.
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|
|
| User: "Marvin" |
|
| Title: Re: Color Photos of Spectra |
11 Sep 2005 01:10:29 PM |
|
|
Ioannis wrote:
For those doing astro and lab spectroscopy work, I have posted several
spectrum pictures taken with my hand-held spectroscope and with my Nikon
CoolPix digital camera.
All spectra are correctly calibrated against each other in terms of nm.
Note the Fraunhoffer absorption lines on the Solar Spectrum. D, H_{beta},
H_{gamma} and H_{delta} are visible. They are still a little weak, but my
small spectroscope has very small resolution.
Note also that the only "truly" monochromatic source among these, was the
Red Diode Laser, which emits in the vicinity of 660nm.
http://users.forthnet.gr/ath/jgal/spectroscope/amici.html
on my spectroscopy section:
http://users.forthnet.gr/ath/jgal/spectroscope/
Enjoy,
PS: The spectrum of the Propane gas burner is actually molecular and these
are bands, not lines. If anyone has an explanation on what the actual
wavelengths are, please feel free to explain. (Since Propane contains
C/O/H(?), and C's and O's ionization energies are relatively high, I would
expect these bands to be H related, but I am not sure).
C. T. J. Alkemade, Univ. of Utrecht, did extensive studies of flame spectra. Search his
publications.
If it was a propane/oxygen flame, OH bands are likely. If it was propane/air, there might
also be CN bands.
.
|
|
|
| User: "Ioannis" |
|
| Title: Re: Color Photos of Spectra |
11 Sep 2005 02:23:27 PM |
|
|
Ο "Marvin" <physchem@cloud9.net> wrote in message
news:11i8soip5elcr70@corp.supernews.com...
[snip]
http://users.forthnet.gr/ath/jgal/spectroscope/amici.html
on my spectroscopy section:
http://users.forthnet.gr/ath/jgal/spectroscope/
Enjoy,
PS: The spectrum of the Propane gas burner is actually molecular and
these
are bands, not lines. If anyone has an explanation on what the actual
wavelengths are, please feel free to explain. (Since Propane contains
C/O/H(?), and C's and O's ionization energies are relatively high, I
would
expect these bands to be H related, but I am not sure).
C. T. J. Alkemade, Univ. of Utrecht, did extensive studies of flame
spectra. Search his
publications.
If it was a propane/oxygen flame, OH bands are likely. If it was
propane/air, there might
also be CN bands.
Thanks Marvin,
I labeled it incorrectly as "Propane". I just checked the contents of the
camping gas can and it says, 100% Butane.
I have corrected the label on my web-page.
Thanks again,
--
I. N. Galidakis
http://users.forthnet.gr/ath/jgal/
Eventually, _everything_ is understandable
.
|
|
|
| User: "Marvin" |
|
| Title: Re: Color Photos of Spectra |
12 Sep 2005 12:43:18 PM |
|
|
Ioannis wrote:
Ο "Marvin" <physchem@cloud9.net> wrote in message
news:11i8soip5elcr70@corp.supernews.com...
[snip]
http://users.forthnet.gr/ath/jgal/spectroscope/amici.html
on my spectroscopy section:
http://users.forthnet.gr/ath/jgal/spectroscope/
Enjoy,
PS: The spectrum of the Propane gas burner is actually molecular and
these
are bands, not lines. If anyone has an explanation on what the actual
wavelengths are, please feel free to explain. (Since Propane contains
C/O/H(?), and C's and O's ionization energies are relatively high, I
would
expect these bands to be H related, but I am not sure).
C. T. J. Alkemade, Univ. of Utrecht, did extensive studies of flame
spectra. Search his
publications.
If it was a propane/oxygen flame, OH bands are likely. If it was
propane/air, there might
also be CN bands.
Thanks Marvin,
I labeled it incorrectly as "Propane". I just checked the contents of the
camping gas can and it says, 100% Butane.
I have corrected the label on my web-page.
Thanks again,
That doesn't change my guesses at the nature of the bands.
.
|
|
|
|
|
|
| User: "Ioannis" |
|
| Title: Re: Color Photos of Spectra |
16 Sep 2005 03:23:55 PM |
|
|
Ο "Ioannis" <morpheus@olympus.mons> έγραψε στο μήνυμα
news:1126449980.13650@athnrd02...
For those doing astro and lab spectroscopy work, I have posted several
spectrum pictures taken with my hand-held spectroscope and with my Nikon
CoolPix digital camera.
All spectra are correctly calibrated against each other in terms of nm.
A quick update to note a correction on the contents of three spectra, which
I had them wrong.
I have also added a wavelength reference in nm, based on some of the
strongest lines. All the spectra are callibrated against each other AND
against the scale reference.
http://users.forthnet.gr/ath/jgal/spectroscope/amici.html
Many thanks to Don Klipstein who made the corrections for the spectra of
Ne+Kr, Ne+Xe 1 and Ne+Xe 2.
http://members.misty.com/don/spectra.html
Note the Fraunhoffer absorption lines on the Solar Spectrum. D, H_{beta},
H_{gamma} and H_{delta} are visible. They are still a little weak, but my
small spectroscope has very small resolution.
--
I. N. Galidakis
http://users.forthnet.gr/ath/jgal/
Eventually, _everything_ is understandable
.
|
|
|
|
|
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