SBIG CCD CAMERA SYSTEM
The Meade LX200R 14'' is fitted with Meade f/6.3 Focal Reducer which has a measured focal length of +140.3mm.
Depending of the separation of the lens and the CCD, various reductions are possible and the current system produces a focal ration of f/6.35.
Faster focal ratios produce a larger field but at a cost of so much vignetting, that the autoguider chip is hardly illuminated at all.
The detector is an SBIG STL-1001E which has a CCD of 1024 x 1024 x 24 microns. Thus the field of view is 37.41 arcmin square with one pixel corresponding to 2.19 arcseconds. The autoguider chip is 7.38 arcmin x 5.57 arcmin with pixels which are 0.675 arcseconds square. The CCD is cooled by a 2 stage Peltier device using air and water cooling and operates at -5C. Control of the CCD is by CCDSoft.
The system is focused using FocusMax, with a Finger Lakes Instruments Precision Digital Focuser (PDF).
The internal filter wheel in the CCD is computer controlled and currently has the following photometric filters: U B V R and a Schott BG20 filter which attenuates the NaD yellow street light pollution.
Zoom Lens Spectrograph:
Optics and Aberrations:
Focus Drive and Encoder:
TV Slit Viewing and Calibration Optics: