my new old spectroscopy book
-
- Way More Fun to Share It!!
- Posts: 2031
- Joined: Sat Nov 24, 2012 2:33 pm
- Has thanked: 57 times
- Been thanked: 1190 times
my new old spectroscopy book
picked up old copy(1875) of "Schellen's Spectrum Analysis"
wonderful illustrations
cover : can u guess what it is? random other pages
there is a whole topic of 1868 eclipse
as well as others
wonderful illustrations
cover : can u guess what it is? random other pages
there is a whole topic of 1868 eclipse
as well as others
-
- Way More Fun to Share It!!
- Posts: 2031
- Joined: Sat Nov 24, 2012 2:33 pm
- Has thanked: 57 times
- Been thanked: 1190 times
- Montana
- Librarian
- Posts: 34698
- Joined: Mon Oct 17, 2011 5:25 pm
- Location: Cheshire, UK
- Has thanked: 17888 times
- Been thanked: 8887 times
- rsfoto
- Way More Fun to Share It!!
- Posts: 6289
- Joined: Mon Jun 18, 2012 8:30 pm
- Location: San Luis Potosi, México
- Has thanked: 9677 times
- Been thanked: 5750 times
Re: my new old spectroscopy book
Great, at that book age 3 years difference do not matter
regards Rainer
Observatorio Real de 14
San Luis Potosi Mexico
North 22° West 101°
Observatorio Real de 14
San Luis Potosi Mexico
North 22° West 101°
-
- Way More Fun to Share It!!
- Posts: 2031
- Joined: Sat Nov 24, 2012 2:33 pm
- Has thanked: 57 times
- Been thanked: 1190 times
- Carbon60
- Way More Fun to Share It!!
- Posts: 14293
- Joined: Wed Mar 07, 2012 12:33 pm
- Location: Lancashire, UK
- Has thanked: 8523 times
- Been thanked: 8251 times
Re: my new old spectroscopy book
An excellent book. One for a display cabinet.
I believe the cover image is a solar spectroscope by Norman Lockyer. Multiple prisms in a circular arrangement to achieve high dispersion. I only know because the original (or maybe a reproduction) was on display at the Science museum in London a couple of years ago.
https://solarchatforum.com/viewtopic.p ... um#p227191
Stu.
I believe the cover image is a solar spectroscope by Norman Lockyer. Multiple prisms in a circular arrangement to achieve high dispersion. I only know because the original (or maybe a reproduction) was on display at the Science museum in London a couple of years ago.
https://solarchatforum.com/viewtopic.p ... um#p227191
Stu.
Last edited by Carbon60 on Wed Oct 28, 2020 7:39 am, edited 1 time in total.
H-alpha, WL and Ca II K imaging kit for various image scales.
Fluxgate Magnetometers (1s and 150s Cadence).
Radio meteor detector.
More images at http://www.flickr.com/photos/solarcarbon60/
Fluxgate Magnetometers (1s and 150s Cadence).
Radio meteor detector.
More images at http://www.flickr.com/photos/solarcarbon60/
- Montana
- Librarian
- Posts: 34698
- Joined: Mon Oct 17, 2011 5:25 pm
- Location: Cheshire, UK
- Has thanked: 17888 times
- Been thanked: 8887 times
Re: my new old spectroscopy book
It does look like a drawing of the Sun though with bits sticking out, but Stuart's idea looks better
Alexandra
Alexandra
-
- Way More Fun to Share It!!
- Posts: 2031
- Joined: Sat Nov 24, 2012 2:33 pm
- Has thanked: 57 times
- Been thanked: 1190 times
-
- Way More Fun to Share It!!
- Posts: 2031
- Joined: Sat Nov 24, 2012 2:33 pm
- Has thanked: 57 times
- Been thanked: 1190 times
Re: my new old spectroscopy book
one thing i don't understand
some images show spectroscopes
with even numbers of prizms
how can that work?
disperse combine. - even
disperse combine disperse-- odd
you get what i mean?
it should always end with disperse?
some images show spectroscopes
with even numbers of prizms
how can that work?
disperse combine. - even
disperse combine disperse-- odd
you get what i mean?
it should always end with disperse?
-
- Way More Fun to Share It!!
- Posts: 2031
- Joined: Sat Nov 24, 2012 2:33 pm
- Has thanked: 57 times
- Been thanked: 1190 times
Re: my new old spectroscopy book
great photo Stu
book has that same image
Note; wearing that hat should be a requirement when looking at sun
book has that same image
Note; wearing that hat should be a requirement when looking at sun
- Carbon60
- Way More Fun to Share It!!
- Posts: 14293
- Joined: Wed Mar 07, 2012 12:33 pm
- Location: Lancashire, UK
- Has thanked: 8523 times
- Been thanked: 8251 times
Re: my new old spectroscopy book
Hi John,
I think they all disperse; no recombination. This gives an overall gradually increasingly wider degree of dispersion throughout the train.
Stu.
H-alpha, WL and Ca II K imaging kit for various image scales.
Fluxgate Magnetometers (1s and 150s Cadence).
Radio meteor detector.
More images at http://www.flickr.com/photos/solarcarbon60/
Fluxgate Magnetometers (1s and 150s Cadence).
Radio meteor detector.
More images at http://www.flickr.com/photos/solarcarbon60/
-
- Way More Fun to Share It!!
- Posts: 2031
- Joined: Sat Nov 24, 2012 2:33 pm
- Has thanked: 57 times
- Been thanked: 1190 times
- Merlin66
- Librarian
- Posts: 3972
- Joined: Tue Dec 13, 2011 1:23 pm
- Location: Junortoun, Australia
- Has thanked: 174 times
- Been thanked: 618 times
- Contact:
Re: my new old spectroscopy book
Whoooo
That's a great and very useful find!
(There's a eCopy available: https://ia803207.us.archive.org/12/item ... 00sche.pdf )
The dispersion of a prism is directly related to the base length - either a very (very!) large and expensive prism, or the addition of many smaller ones - there is a limit around eight prisms when the light loss becomes unacceptable.
That's a great and very useful find!
(There's a eCopy available: https://ia803207.us.archive.org/12/item ... 00sche.pdf )
The dispersion of a prism is directly related to the base length - either a very (very!) large and expensive prism, or the addition of many smaller ones - there is a limit around eight prisms when the light loss becomes unacceptable.
"Astronomical Spectroscopy - The Final Frontier" - to boldly go where few amateurs have gone before
https://groups.io/g/astronomicalspectroscopy
http://astronomicalspectroscopy.com
"Astronomical Spectroscopy for Amateurs" and
"Imaging Sunlight - using a digital spectroheliograph" - Springer
https://groups.io/g/astronomicalspectroscopy
http://astronomicalspectroscopy.com
"Astronomical Spectroscopy for Amateurs" and
"Imaging Sunlight - using a digital spectroheliograph" - Springer