iTelescope - T40 - Deep Field - Chile

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Location Information

Observatory:  iTelescope, Chile - MPC Code - W76

Telescope:   0.5-m f/3.8 reflector + CCD

Timezone:  UTC -4 Chile. Daylight Savings Time is Observed

Minimum Target Elevation: Approx 20°

South: 30° 27’ - West: 70° 45’   

Elevation: 1570m 

Operational Notes

Deep Field Telescope. Imaging Platform. Typically used for LRGB/Narrowband Imaging. FITS and TIF file formats. Dark Frame calibration data is available for  60, 120, 180, 300, 600, 1200, 1800  second exposures. Binx1 - Binx2. Raw data can be found at

  • Recommended Maximum Exposure 1200 seconds.
  • T40 is a 500mm Imaging platform utilizing a large format FLI Proline CCD. This is an Anti Blooming camera so it lends itself to long exposures on a wide variety of targets. T40 is populated with LRGB & Narrowband filters.
  • Care however should be taken if using T40 for photometry as its CCD is of the ABG variety. So users should make sure they don't saturate the image as result may not be linear.
  • IMPORTANT NOTES: T40 is externally Guided.

Instrument Package

CCD:  FLI Proline 16803

QE: 60% Peak

Full Well:  ~100,000e-  Anti Blooming Gate (ABG)

Dark Current:   0.005 e-/pixel/sec

Pixel Size:  9um Square

Resolution:  0.953 arc-secs/pixel

Sensor:  Frontlit 

Cooling:  Set to -30ºC default 

Array:  4096 by 4096

FOV: 1.08 x 1.08 degrees

Filters: Luminance, Red, Green, Blue, Ha, SII, OIII. (Astrodon)

Position Angle: 91 degrees E of N

Telescope Optics

OTA: ASA 500

Optical Design: Corrected Newtonian Astrograph 

Aperture: 500mm

Focal Length: 1940mm

F/Ratio: f/3.8 

Guiding: External 

Mount: ASA DDM85