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Self-Guiding Spectrograph
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The Self-Guiding Spectrograph is designed to be used with an ST-7E camera. The spectrometer and ST-7/8 are coupled and mounted as a unit onto the telescope. The system is quite handy for collecting spectra since both the object of interest and the spectrometer entrance slit are simultaneously imaged onto the tracking CCD, allowing the object to be viewed and accurately placed onto the slit. The slit is backlit by an LED during the setup so it clearly shows on the tracking CCD.
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| CAT # | PRICE | QUANTITY |
| SGS | $4995.00 |
| SPECIFICATIONS | PRODUCT LITERATURE |
Comparison of DSS-7 to SGS Self-Guided Spectrograph
| DSS | SGS | |
| Input F/number | F/10 | F/6.3 x F/10 |
| Dispersion | 5.4 Angstroms /pixel |
High Res = 1.07 Angstroms / pixel Low Res = 9 Angstroms / pixel |
| Resolution with 9u pixels (ST-7) | 15 Angstroms |
Higth Res = 2.4 Angstroms Low Res = 9 Angstroms |
| Spectral Range (ST-7) | 4130 Angstroms |
High Res = 820 Angstroms Low Res= 3290 Angstroms |
| Projected width of narrowest slit on CCD | 25 microns | 18 microns |
| Blur perpendicular to slit | ~ 25 microns | ~ 100 microns |
| Lower resolution slit choices | 50, 100 and 200 mcirons | 72 microns |
| Ideal for measuring | Extended Objects | Stars |
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Relative Sensitivity for dim extended objects near H-alpha |
5 - 10X | 1X |
| Dimensions (excluding connectors) | 2.2 x 4 x 4.3 in. | 3 x 4 x 7 in |
| Weight (excluding camera) | 1.5 lb. | 1.5 lb. |