Telescope Data

Primary mirror diameter 1.20 m
Secondary mirror diameter 0.50 m
Effective unobstructed diameter 1.09 m
Focal length 8.40 m
f-ratio f/7
Mount type Altitude-Azimuth ("Alt-Az")
Platescale 24.56 arcsecs/mm
Speed of axes 10°/sec maximum
Telescope manufacturer Halfmann Machinenbau
M1+M2 mirror manufacturers

Lomo PLC/St. Petersburg

 

M3 mirror manufacturer

Berliner Glas KGaA/Berlin

 


 

Observatory Data

  MONET/North MONET/South MONET/Central
Site McDonald Observatory, Texas, USA Sutherland, Northern Cape, ZA Göttingen, Niedersachsen, DE
Latitude +30° 40' 17" = 30.6714° North -30° 22' 44"  =  30.3789° South +51° 33' 38" = 51.5606° North
Longitude -104° 1' 18" E  =  104.0217° West +20° 48' 39" E  =  20.8108° East +9° 56' 40" E  =  9.9444° East
Height 2000 m 1700 m 201 m
Time zone

Central Standard Time (CST)

UTC-7 (winter), UTC-6 (summer)

SA Standard Time (SAST)

UTC+2 (no summer time)

Middle European Time (MEZ)

UTC+1 (winter), UTC+2 (summer)

First light

December 2005

2008

2014

 



 Camera Data

Camera Scientific Instruments 1100 

Finger Lakes Instruments

ProLine PL230

SBIG STF-8300 M (current) Apogee ALTA E47+ (old)
Chip

E2V 230-42 BI BBAR

back-illuminated

Q.E. 95% at 570 nm

E2V 230-42 BI BBAR

back-illuminated

Q.E. 95% at 570 nm

KAF-8300

front-illuminated

Q.E. 57% at 550 nm

 E2V CCD47-10

back-illuminated

Q.E. 92% at 570 nm

Size 2048x2048 2048x2048 3326x2504 1024x1024
Pixels 15 μm 15 μm 5.4  μm 13 μm
Gain  2.28 e-/ADU  1.83 e-/ADU  2.7 e-/ADU 1.3 e-/ADU
Readout-Noise  7.1 e- = 3.1 ADU 12.1 e- = 6.6 ADU  24.3 e- = 9.0 ADU  9.0 e- = 11.7 ADU
Bias level  525 ADU 997 ADU  1025 ADU  
Dark current  < 0.002 e-/pixel/s 0.302 e-/pixel/s  0.02 e-/pixels/s  0.2 e-/pixel/s
Scale (unbinned) 0.3684 arcssec/pixel 0.3684 arcssec/pixel 0.1326 arcsec/pixel 0.3193 arcsec/pixel
Field 12.6 x 12.6 arcminutes 12.6 x 12.6 arcminutes 7.4 x 5.5 arcminutes 5.4 x 5.4 arcminutes
Saturation  about 45000 ADU about 65000 ADU 64311 ADU  
Non-linear for...     > 57000 ADU  
Notes North starting fall 2016 South starting spring 2017 Use 2x2 or 3x3 binned No longer in use

 


 

Filter Data

Name   Description Central Wavelength [nm] FWHM [nm] Peak Wavelength [nm] T_max [%]
clear  BG glass  (as CCD)  (as CCD)  (as CCD)  (as CCD)
Bessel U  ultraviolet  360  51  364  62
Bessel B  blue  440  94  431  66
Bessel V  green  550  109  520  93
Bessel R  red  660  142  600  83
Bessel I  far-red  800  156  805  94
Sloan g'  green  475  150  492  96
Sloan r'  red  619   132  629  96
Sloan z'  near IR  900    900  96
Halpha  neutral hydrogen  656  8.2  656  92
OIII twice ionised oxygen 498 11.7 498 87
Hcontinuum & once ionized sulfur