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Rainbow Optics:
Star spectrascope (a couple of hundred USŁ$)
Sivo Scientific:
Fiber optic spectrometer (A couple of thousand USŁ)
SBIG:
DSS-7, Deep space spectrograph (optimized for ST-402ME and f/10 SCT scopes)
SGS, Self-Guiding Spectrograph for dual CCD models of ST-7/8/9/10/2000 cameras DSS7. SBIG’s new Deep Space Spectrograph (DSS-7) is a spectrograph optimized for the types of spectral observations that an amateur has always been interested in, from stellar classification to nebular analysis to galactic red shifts.
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