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Handbook for the SX remote control Spectrograph    Issue 1, 17/8/20 

 

 

A general view of the optical and mechanical layout 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

Содержание SX Spectrograph PRO

Страница 1: ...automated most of the spectrograph functions The remote spectrograph allows you to change slits adjust the imaging camera focus and wavelength setting and switch on a calibration lamp or flat field l...

Страница 2: ...es a Lodestar X2 guide camera which observes the image field via a 10 90 beam splitter cube The slit is not directly visible in the field but its position co ordinates are provided and marked by a cur...

Страница 3: ...the wavelengths of the lines from any external source A typical calibration spectrum imaged with an M25C colour camera A spectrum with wavelength markers is provided in the appendix The optical input...

Страница 4: ...d of the cross slide This function is pro vided in the Spectrograph control software As the grating is designed for a compact optical system the available back focal distance for the imaging camera is...

Страница 5: ...Handbook for the SX remote control Spectrograph Issue 1 17 8 20 A general view of the optical and mechanical layout...

Страница 6: ...bottom info strip The spectrograph is automatically started with the slit set to the highest resolution position Number 1 20 microns wide x 1 mm high This is usually the best setting for general purpo...

Страница 7: ...have the Lodestar drivers and software installed please follow these instructions To install the Lodestar driver use the supplied stick to copy the appropriate driver files to a convenient folder on y...

Страница 8: ...size of the spectrograph slit assuming that the 1 mm x 20 uM slit is in use The slit cursor position will probably need adjusting to match your spectrograph The nominal setting will be provided on a l...

Страница 9: ...ee several stars when using a 1 or 2 second exposure and be able to refine the focus until the stars are sharply defined If you have a test target in mind slew to this object and find a good bright gu...

Страница 10: ...ry slew ing the scope slightly East or West before taking another image The Adjust lock position in the Tools menu of PHD2 is good for this If the brightness falls off for both directions then the sli...

Страница 11: ...e such as RSpec see below These simple instructions are sufficient for capturing a spectrum but you will probably want to identify spectral lines and perhaps perform further analysis of the data To th...

Страница 12: ...the calibration chart The small double peak at the right is caused by sodium light pollution and is not in the calibration chart You can see that the spectrum is quite linear and matches the referenc...

Страница 13: ...lected slit The slit widths available 1 20uM x 1mm 2 30uM x 2mm 3 55uM x 2mm 4 115uM x 2mm 5 325uM x 2mm 6 3mm diameter clear aperture For maximum light input with point sources stars or small nebulae...

Страница 14: ...with the angle to achieve a different spectral width or line shape The theoretical best angle is marked by a groove in the floor of the spectrograph but a varia tion of two or three degrees in either...

Страница 15: ...2 mm Position 5 325 uM x 2 mm Position 6 3mm x 3 mm circular Input Output Female T2 thread 42 x 0 75 mm input Male T2 thread output Input back focal distance approximately 37 mm Output back focal dist...

Страница 16: ...1 The equipment shall only be used for normal purposes described in the standard operating instructions and within the relevant safety standards of the country where the equipment is used 2 Repairs u...

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