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spectroscopy

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#1 Webb1104

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Posted 12 October 2019 - 12:29 PM

Good Afternoon,

I am wondering if anybody knows a cheap way to build or purchase a spectrometer for an 8” Newtonian telescope.  I am really fascinated in learning and working with the light spectrum of stars.  Any help in this would be greatly appreciated.

 

Thank You

 

James



#2 555aaa

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Posted 12 October 2019 - 02:45 PM

The shelyak star analyzer is a transmission grating that you put in front of the camera like a filter. The have a whole range of spectrographs. 


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#3 robin_astro

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Posted 14 October 2019 - 05:47 AM

The Paton Hawksley Star Analyser is probably the simplest way to start. Beyond that, the Shelyak  ALPY 600 is a popular entry level instrument but is still a big step up in cost. (Allow for the guider module in your budget). A browse of this section will show examples from both. For a low cost self build spectrograph which actually works, I can suggest the 3D printed Lowspec 

https://www.thingive...m/thing:2455390

 

Cheers

Robin


Edited by robin_astro, 14 October 2019 - 05:48 AM.

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