iTelescope - T21 - Deep Space - Utah
< Previous Telescope | Next Telescope >
Location Information
Observatory: Utah Desert Remote Observatory at Great Basin Desert, Beryl Junction, Utah, USA
MPC: U94
Telescope: 0.43-m f/6.8 reflector + CCD + f/4.5 focal reducer
Timezone: UTC Minus 7:00. Daylight savings time is observed
Minimum Target Elevation: 15º all azimuths except noted. 23º elevation for azimuths 50-130º.
N 37° 44’ 16" Decimal: 37.7378 North
W 113° 41’ 51" Decimal: -113.6975 West
Elevation: 1,570 meters / 5150 ft
Operational Notes
Deep Field. Hybrid Missions. Typically used for Photometry and Imaging. FITS and TIF file formats. Dark Frame calibration data is available for 60, 120, 180, 300, 600 second exposures. Binx1 - Binx2. Raw data can be found at data.itelescope.net.
- T21 is fitted with a 0.66 Focal reducer. Recommended Maximum Exposure 600 seconds.
- The Planewave Ascension 200HR mount is so accurate whilst tracking that iTelescope Admin have disabled active guidance, with a corresponding decrease in session setup time when imaging.
- T21 is a 'Full House' telescope system. It can Image deeply and do powerful science.
Instrument Package
CCD: FLI-PL6303E CCD camera
QE: 68% Peak
Gain: 1.16
Full Well: ~100,000e- Non Anti Blooming Gate (NABG)
Dark Current: ~.005 e-/pixel/sec. @ -45º C
Conversion Factor (Gain): 1.13
Pixel Size: 9um Square
Resolution: 0.96 arc-secs/pixel
Sensor: Frontlit
Cooling: Set to -35ºC default
Array: 3072 by 2048 (6.3 Megapixels)
FOV: 32.8 x 49.2 arc-mins
Filters:
Astrodon LRGB 50mm unmounted, Astrodon Ha, SII, OIII, (all 5nm), 50 mm unmounted, Astrodon UBVRI John/Cousins
Position Angle: 359º
Telescope Optics
OTA: Planewave 17" CDK
Optical Design: Corrected Dall-Kirkham Astrograph
Aperture: 431mm
Focal Length: 1940mm (0.66 Focal Reducer)
F/Ratio: f/4.5
Guiding: Active Guiding Disabled
Mount: Planewave Ascension 200HR
----------------------------------------------------------------
Transformation Coefficients
VPHOT system –
Tub= 1.035; standard deviation= .010
Tbv= 0.974 ; standard deviation= .012
Tvr= 1.077 ; standard deviation= .011
Tri= 1.009 ; standard deviation= .018
Tv= 0.012 ; standard deviation= .006
Tr= -0.048; standard deviation= .015
Ti= -0.063; standard deviation= .004
Tb= -0.009; standard deviation= .014
These use the following definitions (lower case are instrument magnitudes; upper case are reference magnitudes of NGC7790 from Arne Henden’s standard field available at http://binaries.boulder.swri.edu/fields/ngc7790.html)
Tv= slope of (V-v)/(B-V)
Tr= slope of (R-r)/(V-R)
Ti= slope of (I-i)/(R-I)
Tb= slope(B-b)/(U-B)
Horizon
Please note that T21 has a partial low obstruction to the NE and SE due to the retracted observatory roof.
Here is a 'map' of T21's horizon (the red baseline is 15 degrees)