Starlight Xpress SXVR-H16 Скачать руководство пользователя страница 20 | Manualshive

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Handbook for the SXVR-H16

Issue 1 June 2009

20

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 SXVR-H16 software, open the autoguider control panel by

clicking on the autoguider menu button.

The autoguider control panel with a guide star selected

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Содержание SXVR-H16

Страница 1: ...a 15mm x 15mm active area The use of high performance microlenses on the CCD surface gives the greatest possible throughput of light to the pixels and the resulting QE is very good over the entire vi...

Страница 2: ...ics card capable of displaying an image in a minimum of 1600 x 1200 pixels and 32 bit colour A medium specification Pentium with between 1GHz and 3GHz processor speed is ideal Please note that the SXV...

Страница 3: ...ll be able to access it You can confirm that the installation is complete by checking the status of the USB devices in the Windows Device Manager see above Start up the Windows Control Panel and selec...

Страница 4: ...nu and image panel appear If this is the first time that it has been run you will receive a warning about the lack of an ini file just click on OK and then open Set program defaults from the File menu...

Страница 5: ...click on the camera icon at the top of the screen If the USB connection is OK a message box will inform you of the Handle number for the SXVIO interface and various other version details etc Click OK...

Страница 6: ...your camera and ambient conditions when you have some experience of using the system but do not try to operate at extreme cooling when the air temperature is high Recording your first image We now ha...

Страница 7: ...or pinhole towards a well lit and clearly defined object some distance away Now click on the camera icon in the toolbar of the SXV H16 software and the camera control panel will appear see above Sele...

Страница 8: ...eb site to see if there are any updates or information about your camera software that might help The message board might prove useful to ask for help with getting your camera operating properly Our g...

Страница 9: ...opes As a general guide most CCD astronomers try to maintain an image scale of about 2 arc seconds per pixel for deep sky images This matches the telescope resolution to the CCD resolution and avoids...

Страница 10: ...an indicator Once you are happy with the focus quality achieved you might like to trim the settings of your par focal or flip mirror eyepiece to match the current camera position Although you can rea...

Страница 11: ...ime used during an imaging session As variations in ambient temperature can affect the dark signal it is best to take the dark frames within a few minutes of capturing your images For the same reason...

Страница 12: ...Handbook for the SXVR H16 Issue 1 June 2009 12 A 5 minute exposure many warm pixels are visible see the magnified view below...

Страница 13: ...he readout noise will be much reduced by the square root of the number of averaged darks and so this is one way to improve the situation but it needs a lot of imaging time to be devoted to gathering t...

Страница 14: ...rm pixels are modified the rest of the pixels are unaffected Yet another option is to sum several images that have a small degree of dither in their star alignment If the images are realigned on the s...

Страница 15: ...the use of 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 blo...

Страница 16: ...ill not stop until you press a computer key The images will be saved in FITs format with sequential names such as Img23 Img24 and will be found in the Autosave directory or a sub directory of Autosave...

Страница 17: ...otes on the camera window and vignetting effects in the optical system of the telescope Dust motes act as inverse pinholes and cast out of focus images of the telescope aperture onto the CCD chip wher...

Страница 18: ...y must first have a dark frame subtracted Although this may appear to be unimportant with such brightly lit and short exposures there is the bias offset of the camera in each image and this can produc...

Страница 19: ...mbly mounted in front of the SXV camera or with a separate guide telescope rigidly mounted alongside your imaging telescope I personally use it with an 80mm aperture F5 inexpensive refractor as a guid...

Страница 20: ...n a 80mm refractor guide scope in the author s garden To use the autoguider please proceed as follows 1 Having started the SXVR H16 software open the autoguider control panel by clicking on the autogu...

Страница 21: ...cope and mount You have the option of manually selecting values or asking the software to attempt to determine what they should be This is done by pressing the Train button and waiting for the softwar...

Страница 22: ...ation Removing Dust 1 Dust can be deposited on either the optical window not a big problem to cure or on the CCD faceplate difficult to eliminate entirely When small particles collect on the window th...

Страница 23: ...isturbed renew it with fresh compound before reassembling 7 Replace all the camera parts in reverse order and the job is done Dealing with condensation The SXVR H16 is designed to avoid condensation b...

Страница 24: ...ative to the CCD surface To make an adjustment slacken the appropriate set screw and then turn the adjacent cap head screw in the required direction Complete the adjustment by re tightening the set sc...

Страница 25: ...ly 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 fr...

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