I'm not sure if I understand specifically what question you are asking... but am willing to take two guesses.
- If you are asking how to attach these to a modern camera ... then it would be possible to do so provided these use T-threads. You can get an adapter called a "t-ring" which will have the t-threads or M42 threads on the front (so they adapters can thread on) and will have your camera model's bayonet type mount (e.g. Canon, Nikon, Sony, etc.) on the back-side so it will attach to the camera body.
- Another possibility is that you are asking if there are other adapters to do spectroscopy with a modern photographic camera. This gets a more nuanced answer.
Spectroscopy should not normally be done (unless it's for fun) with a modern color camera for two reasons (but I'll provide some info in a moment that will let you do this anyway).
- In order for the spectra to be analyzed the camera should not be filtering the wavelengths of light being projected onto the sensor. But modern cameras do this. They have an internal filter that is meant to try to imitate the sensitivity of the human eye so that the colors you see in your photos will resemble the colors your eye saw when you took the photo. Human eyes are not equally sensitive across the spectrum. We are most sensitive to green (somewhere around 550nm) and a little less sensitive to blues (e.g. around 450nm) and much less sensitive to reds (around 650nm). Also we aren't very good at seeing UV or IR so the filters try to cut those wavelengths completely out.
- A color camera has a color-filter-array (CFA) installed (usually a Bayer Matrix) and each of these filters further limits light sensitivity.
This means that if you use a normal digital camera for spectroscopy you will not get very accurate information. You would ideally want to use an unfiltered monochrome sensor camera (these are usually specialty cameras -- not made by the common brands familiar to most photographers).
But ... if you want to have a bit of fun, RSpec-Astro.com sells diffraction gratings, spacers, and software that would allow you to do spectroscopy using an ordinary color camera and a Windows PC.
I occasionally do spectroscopy demonstrations for students using special gas tubes (e.g. a tube filled with hydrogen gas... or a tube filled with neon gas, etc.) so students can see that the light is made up of specific wavelengths depending on the atoms involved. For hydrogen, the hydrogen-alpha wavelength is the most dominant wavelength in real life (~656nm) but if you do this with a normal color camera (with factory internal filters) you'll find the Ha wavelength is fairly weak and the H-beta wavelength appears to be stronger. The filtering of the camera gives a false impression of the relative strength of the various emission lines.