Submitted on: 08 January 2004.
Revised on: 01 February 2004.
Accepted on: 26 March 2004.
___________________Journal of Astronomical Telescopes Instruments and Systems
Submitted on: 25 June 2007.
Revised on: 18 August 2007.
Accepted on: 29 September 2007.
___________________Journal of Astronomical Telescopes Instruments and Systems
Submitted on: 14 June 2006.
Revised on: 20 September 2006.
Accepted on: 17 October 2006.
___________________Journal of Astronomical Telescopes Instruments and Systems
Submitted on: 28 November 2008.
Revised on: 24 February 2009.
Accepted on: 22 April 2009.
___________________Journal of Astronomical Telescopes Instruments and Systems
Submitted on: 16 June 2000.
Revised on: 11 August 2000.
Accepted on: 04 September 2000.
___________________Journal of Astronomical Telescopes Instruments and Systems
Submitted on: 12 October 2008.
Revised on: 31 January 2009.
Accepted on: 27 February 2009.
___________________Journal of Astronomical Telescopes Instruments and Systems
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Submitted on: 01 April 1999.
Revised on: 27 June 1999.
Accepted on: 18 July 1999.
___________________Journal of Astronomical Telescopes Instruments and Systems