Telescopes At Millikin:
Parallax Instruments 20" Ritchey-Chrétien
Telescopes Specifications:
 | |  | |
Model No.
| PI500R,
20"
| Clear Aperture
| 508mm
|
Focal Ratio
| F/8.1 | Focal Length
| 4114mm |
Primary &
Secondary
Mirror Substrate
| Zero Expansion
Astrositall | Telescope
Tube
| Low
Expansion
Carbon
Fiber |
|
Secondary
Amplification
| 2.70x | Spacing
(aprox.)
| 40"
|
| Mirror Coatings | AISiO | Optical Tube
Dia. | 24".
|
Optical Tube Length
| 56" | Optical Tube Weight | 130lbs.
|
| Focuser | 2.7" | Finder Scope | 7X50
|
Tube Rings
| Standard | Primary
Cooling Fan | Standard
(Quantity
3)
|
| Slewing Handle | Standard | Tube C'wt
Bar Assy. | Standard
(Quantity
2)
|
Meade LX 200 8" Schmidt-Cassegrain
Telescope Specifications:
 | |  | |
F
| 6.3
| 10
|
| Focal Length | 1280mm | 2000mm |
| Aperture | 203mm | 203mm |
| Secondary | 88mm | 76mm |
| Obstruction | 43% | 37% |
| Type | SCT | SCT |
| Drive | Fully Computer Controlled;
64359 Object Library;
Automatic GO TO Capability | |
| Altaz | Yes | |
| Polar | Yes with optional wedge | |
| Eyepiece | 26mm Plossl | |
| Finder | 8x50 | |
| RS232 | Yes | |
| Power | 18v DC (AC
adapter included) | |
| Weight | 41 lbs | 41 lbs |
| Tripod | Standard | Standard |
CCD Cameras At Millikin:
ST-7XME
| CCD | Kodack
KAF-0402ME
+ TI TC-237 | Pixel Array | 765 x 510 pixels,
6.9 x 4.6 mm |
| Total Pixels | 390,000 | Pixel Size | 9x9 microns |
| Full Well Capacity (ABG) | `50,000 e- | Full Well Capacity (NABG) | ~100,000 e- |
| Dark Current | 1e-/pixel/sec at 0C | Antiblooming | KAF -0402ME is
NABG only ABG optional (KAF-0402LE) |
| Shutter | Electromechanical | Exposure | 0.11 to 36000 seconds,
10ms resolution |
| Correlated Double Sampling | Yes | A/D Converter | 16 bits |
| A/D Gain | 2.6e-/ADU | Read Noise | 15e-RMS |
| Binning Modes | 1 x 1, 2 x 2, 3 x 3 | Pixel Digitization Rate | Up to 420,000 pixels per second |
| Full Frame Acquisition | ~35 seconds | Field of View | 12 x 8 arcminutes on f/10 Meade LX 200 |
| Pixel Size | .9 x .9 arcseconds on f/10 Meade LX 200 | Limiting Magnitude | Magnitude 14 in 1 second |
| (for 3 arcsec FWHM stars) | Magnitude 18 in 1 minute | Cooling Standard | Single Stage Thermoelectric, Active Fan, Water Assistant Ready -45 C from Ambient Typical |
| Temperature Regulation | +-0.1 C | Power | 5 VDC at 1.5 amps, +-12 VDC at 0.5 amp desktop power supply included |
| Computer Interface | Parallel | Computer Compatibility | Windows 98/2000/Me/NT/XP |
| Guiding | Dual CCD Self-Guiding |
STL-1001E
| Imaging CCD | Kodak Enhanced KAF-1001E | Pixel Array | 1024 x 1024 pixels, 24.6 x 24.6 mm |
| Total Pixels | 1.0 Million | Pixel Size | 24 x 24 microns |
| Full Well Capacity (NAGB) | 200,000 e- | Dark Current | 9 e-/pixel/second at 0 degrees C |
| Antiblooming | NAGB only | Shutter | Electromechanical |
| Exposure | 0.12 to 3600 seconds, 10 ms resolution | Correlated Double Sampling | Yes |
| A/D Gain | 2.0e-/ADU | Read Noise | 14.8e-RMS |
| Binning Modes | 1 x 1, 2 x 2, 3 x 3 | Full Frame Download | 40.8 seconds |
| Cooling - standard | Two Stages Thermoelectric, Water Assist, -40 C from Ambient Typical | Temperature Regulation | +-0.1 degrees C |
| Power | 10-18VDC nominal, Universal AC to 12VDC desktop supply | Computer Interface | Parallel |
| Computer Compatibility | Windows 98/NT/2000/ME/XP/Mac OS-X
| Guiding | Dual CCD Self-Guiding Standard |
SGS-Self Guided Spectrograph
| Dispersion: | Two grating available, on a carousel for rapid selection
150 lines per mm (4.3 angstroms per pixel)
600 lines per mm (1.0 angstroms per pixel) |
| Slit width | 100 microns wide entrance slit |
| Acceptance cone angle | F/6.3 by F/10 |
| Resolution | |
| Narrow slit & 600 lines/mm | 2.4 angstroms |
| Narrow slit & 150 lines/mm | 10 angstroms |
| Wide Slit & 600 lines/mm | 10 angstroms |
| Wide slit & 150 lines/mm | 38 angstroms |
| Relative Sensitivity to Diffuse Sources: | |
| Narrow Slit & 600 lines/mm | 1.0 |
| Narrow slit & 150 lines/mm | 4.0 |
| Wide slit & 600 lines/mm | 4.0 |
| Dispersion: | 1.07 0r 4.3 angstroms per pixel |
| Resolution | Emission line is recorded with 2.4, 10 or 38 Angstroms Full Width at Half Maximum |
| Spectral Coverage per frame | About 750 Angstroms with the high resolution grating, or 32000 with the low resolution grating |
| Center Wavelength Selection | Calibrated Micrometer Adjustment |
| Wavelength Range | 3800 to 7500 Angstroms |
| Sensitivity | Signal to noise ration of 10:1 for a 9th mag star, 20 minute exposure using a non-AGB ST-7 and a 10 inch (25 cm) apertaur in high resolution mode. An ABG ST-7 will reach magnitude 8. The low resolution mode will be 1.5 magnitudes more sensitive. |
| Entrance Slit | 18 micron (2.3 arcseconds wide with 63 inch focal length telescope or 72 microns |
| Uses: | Stellar Classification
Analysis of Nebular Lines
Identification of spectroscopic binaries
Measurement of stellar proper motion to +/- 6km/sec accuracy
Measurement of Emission Nebula Proper Motions
Spectra of laboratory and field sources |
| | |