iTelescope - T3 - One Shot Color - New Mexico

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Location Information

Observatory:  New Mexico Skies at Mayhill, New Mexico - MPC H06

Timezone:  UTC Minus 7:00. Daylight savings time is observed 

Minimum Target Elevation: Approx 25 - 45 Degrees

N 32° 54’    Decimal: 32.9 North

W 105° 31’ Decimal: 105.5 West

Elevation: 2,225 metres (7,298 ft)

Operational Notes

Med-Wide Field. Typically used for One Shot Color imaging. FITS and TIF file formats.

Raw data can be found at

  • Dark Frame calibration data is available for  60, 120, 180, 300, 600  second exposures.
  • Recommended Maximum Exposure 300 seconds.
  • Bin x 1 ONLY for Color. Bin x 2 images will produce monochrome data.
  • T3 is part of the iTelescope public outreach program run in partnership with the Research School for Astronomy & Astrophysics and also used by the general public as an educational tool.
  • IMPORTANT NOTES: T3 is Externally Guided: Please limit sub-exposure times to 300 seconds or less for best results.


Instrument Package

CCD:  SBIG ST-4000XCM One Shot Color CCD

A/D Gain:  0.6e-/ADU

Pixel Size:  7.4um Square

Resolution:   1.45 arc-secs/pixel

Sensor:  Frontlit 

Cooling:  -20C Winter (-15C Summer)

Normal Array:  2048 x 2048 (8.3 Megapixels)

Filters:  NA

FOV47.1 x 47.1 arcmin

Pixel scale:1.37 arcsec/pixel
Orientation:Up is 179 degrees E of N


Telescope Optics

OTA: Takahashi TOA-150

Optical Design: Apochromatic Refractor 

Aperture: 150mm

Focal Length: 1095mm

F/Ratio: f7.3

Guiding: External 

Mount: Paramount GTS