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INFORMATION ABOUT THE OBSERVATORY, TELESCOPE, INSTRUMENT & CCD PARAMETERS USED


OBSERVATORY PARAMETERS:
&Phi L = 73.667 ° E Longitude for IUCAA Telescope.
&Phi l = 19.083 ° N latitude for IUCAA Telescope.
B_atm_Ext = 0.46 (mag/airmass) Atmospheric Extinction{4400}
V_atm_Ext = 0.28 (mag/airmass) Atmospheric Extinction{5500}
Das, H. K.; Menon, S. M.; Paranjpye, A.; Tandon, S. N. 1999, "Site characterisation for the IUCAA telescope". 1999, BASI, 27, 609.
A_xt = 0.15512195/airmass Extinction parameter, (k(&lambda) = A_xt + B_xt/ &lambda4 )
B_xt = 1.14271229e+14 4/ airmass Extinction parameter, (k(&lambda) = A_xt + B_xt/ &lambda4 )
SeeingV = 1.5 arcsec Seeing Assumed.
Aperture = 3.0 arcsec Aperture size Assumed.

TELESCOPE PARAMETERS:
Tel_eff = 0.7 Telescope Efficiency (1=100%)
Tel_aria = &Pi * 10000.0 cm Telescope Ligh Collecting Area.
TPlt_Scale = 10.0 arcsec/mm Telescope Plate-Scale

INSTRUMENT & CCD PARAMETERS:
CPlt_Scale = 44.0 &mu m/arcsec. Camera Plate-Scale.
[f=315.7mm Collimator f=141.8mm Camera]
Grism: Grism Information
Nord = 13 Number of Orders of IFOSC9 (EchelleGrisms).
EEV CCD: CCD Quantum Efficiency
N_axis1 = 2048 Number of pixel in axis1
N_axis2 = 2048 Number of pixel in axis2
pix_size = 13.5 &mu m Square Pixel size
CPlt_Scalp = 3.26 pixel/arcsec Camera Plate-Scale in pixels
CCD_Gain = 1.8 -e /ADU CCD gain
RONoise = 6.3 -e CCD read out Noise
RONoisA = 3.5 ADU CCD read out Noise
N_dark = 36 -e /pixel/hour Dark Current at 153K (Typical)
Saturation = 65536.0 ADU CCD Saturation Level (16 bits data)
Loral CCD: CCD Quantum Efficiency
N_axis1 = 2048 Number of pixel in axis1
N_axis2 = 2048 Number of pixel in axis2
pix_size = 15.0 &mu m Square Pixel size
CPlt_Scalp = 2.93 pixel/arcsec Camera Plate-Scale in pixels
CCD_Gain = 1.4 -e /ADU CCD gain
RONoise = 10.0 -e CCD read out Noise
RONoisA = 7.1 ADU CCD read out Noise
N_dark = 120.0 -e /pixel/hour Dark Current at 153K (Typical)
Saturation = 65536.0 ADU CCD Saturation Level (16 bits data)
Instrument: Efficiency with CCD Optical Layout of IFOSC.
The caption along with each of the lenses in the Collimator, the Camera and the Field lens, indicates the coated glass material used and its average transmittance.






2003 by Pavan Chakraborty
IUCAA, Pune