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Handbook for SXV-M5       Issue 1 June 2004 

 

 

Starlight Xpress Ltd 

 

SXV-M5 

CCD camera user manual 

 

 

 
Thank you
 for purchasing a Starlight Xpress CCD camera. We hope that you will be 
very satisfied with the results. The SXV-M5 is a medium-resolution cooled CCD 
camera, especially designed for astronomical imaging. The SXV-M5 uses a Sony 
SuperHAD CCD, with 500 x 582 pixels in a 4.9mm x 3.65mm active area. SuperHAD 
devices have the greatest quantum efficiency of any interline transfer CCD currently 
available and the use of high performance microlenses on the CCD surface gives the 
greatest possible throughput of light to the pixels. This camera is a next generation 
version of the parallel port driven MX516, but the use of an internal USB2 interface 
and the addition of an external guide camera option makes it considerably more 
effective. 
 
Please take a few minutes to study the contents of this manual, which will help you to 
get the camera into operation quickly and without problems. I am sure that you want 
to see some results as soon as possible, so please move on to the ‘Quick Start’ section, 
which follows. A more detailed description of imaging techniques will be found in a 
later part of this manual. 

 

Summary of Contents for SXV-M5

Page 1: ...and the use of high performance microlenses on the CCD surface gives the greatest possible throughput of light to the pixels This camera is a next generation version of the parallel port driven MX516...

Page 2: ...00 or Windows XP This machine must have at least one USB port ideally USB2 0 and at least 64 Megs of memory If you intend to view the finished images on its screen then you will also need a graphics c...

Page 3: ...the program disk into your CD drive and select Setup exe if the disk does not autostart The initial installation is to set up the USB drivers required by the SXV electronics The files SXVIO sys and Ge...

Page 4: ...g 8 pixels The other default settings are not important for current purposes and may be left as the software start up values for now Recording your first image We now have the camera and computer set...

Page 5: ...25 adaptor and pricking its centre with a small pin If you use a normal lens then stop it down to the smallest aperture number possible usually F22 as this will minimise focus problems and keep the li...

Page 6: ...era lens can be adjusted for good focus and so you might want to try this to judge the image quality that it is possible to achieve One potential problem with taking daylight images is the strong infr...

Page 7: ...rmal Contrast Stretch and the High Pass Low Power filter The high pass filter gives a moderate improvement in the image sharpness and the effects of image processing This can be very effective on dayl...

Page 8: ...be trimmed to its optimum setting Several astronomical stores sell par focal eyepieces but you can also make your own with a minimum of materials and an unwanted Kellner or Plossl ocular Just measure...

Page 9: ...yepiece is your best option Whichever device you use it is necessary to set up a good optical match between your MX7 and the telescope Most SCTs have a focal ratio of around F10 which is too high for...

Page 10: ...ccessories such as telecompressors An M42 to T adaptor will allow you to easily interface with virtually any device in the astronomical catalogue Achieving a good focus Your starting point will depend...

Page 11: ...w parallel rods across the telescope aperture These make the point of precise focus easier to determine by creating double images or bright diffraction spikes around stars which merge at the setting o...

Page 12: ...ambient temperature will affect the dark signal it is best to take the dark frames within a few minutes of capturing your images For the same reason it is not wise to use old dark frames if you want...

Page 13: ...background by setting the Black slider just below the main peak of the histogram Alternatively you can use the Remove Background option to let the software decide on the best setting This will greatl...

Page 14: ...f a telescope for deep sky imaging do not forget that you have the option of using an ordinary camera lens for impressive wide field shots A good quality 200mm F3 5 lens with an infrared blocking filt...

Page 15: ...histogram has a peak value at around 127 and does not extend much above 200 Ignore the major peak near zero due to the dark background If you use too short an exposure time the image noise level will...

Page 16: ...re and saturate the highlights Aligning the images is always something of a problem as there are rarely any stars to use when imaging the planets but Jupiter s satellites can be useful reference point...

Page 17: ...cal reducers are used This causes a brighter centre to show in images especially when there is a lot of sky light to illuminate the field If dust motes are your main problem it is best to clean the ca...

Page 18: ...y very short exposure dark frame will give a good result The dark subtracted images should then be averaged together before use After the above procedures have been executed the flat field will be rea...

Page 19: ...ng devices and dual CCD self guiding cameras S T A R 2000 can guide on almost any object which is visible within the CCD frame You have the entire CCD field of view to choose from and can even select...

Page 20: ...n mount will work well Please note that the RJ11 cable supplied with the camera has the connectors fitted on opposite sides of the 6 way cord other cables may not be compatible Setting up the system F...

Page 21: ...es You can now test communications between the computer and telescope mount as follows 1 Press Set slew values followed by Save Program Defaults 2 Select Telescope control in the File menu 3 Press eac...

Page 22: ...begins to drift away it is possible that your drive guide directions are reversed in either RA or DEC or both Press ESC to stop the exposure and go back to the Set Program Defaults menu where you can...

Page 23: ...of amplifier luminescence at the upper left hand corner of your images and this will make dark frame subtraction more important than usual The software includes an option to generate properly matched...

Page 24: ...he guide star if the guider frame is aligned with the RA and Dec axes Now connect the head to the SXV camera using the 18 way connector lead including the port divider box if it is to be used The reco...

Page 25: ...The autoguider installed on a 80mm refractor guide scope in the author s garden To use the autoguider please proceed as follows 1 Having started the SXV M5 software open the autoguider control panel b...

Page 26: ...use the main camera control panel as necessary 6 Re open the guider control panel start imaging and try to locate a clearly visible guide star If necessary make adjustments to the guide telescope or...

Page 27: ...nt A lot of information can be deduced by watching the behaviour of the guide star in the guider frame If it is continually moving between two locations either side of the green cross then the RA or D...

Page 28: ...ssembly 4 The entire camera electronic assembly can now be lifted away from the camera front barrel and the CCD will be readily accessible Note that a layer of white heat sink compound is applied to t...

Page 29: ...mpanies are offering alternative software The most active and successful of these is AstroArt by MSB software You can purchase AstroArt from many dealers Worldwide and more information may be obtained...

Page 30: ...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 under guarantee will be free...

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