ATA050 Telescope

As Türkiye's largest investment in fundamental science, forming the space sciences ecosystem,
we are an advanced research infrastructure founded in partnership between Atatürk University and TÜBİTAK.

The ATA050* telescope located at the Erzurum DAG campus enables scientific observations in the visible region of the electromagnetic spectrum.

General Specifications

Mount Type	Mirror Diameter (m)	f Ratio	Focal Length (m)	Optical Design	FoV Field of View	Observation λ**
Equ.	0.5	8.0	4.0	Ritchey Chrétien	26.3' x 6.3'	VIS

*ATA050: 0.50 m diameter telescope in partnership with Atatürk University**λ: Observation wavelengths VIS: Visible Region

Focal Plane Instruments

Parameter	Value
Model	QHY268M
Image Sensor	SONY APS-C CMOS Sensor IMX571
Sensor Type	Back Illuminated (BSI)
Sensor Size	23.6 mm x 15.8 mm
Pixel Size	3.76 µm x 3.76 µm
Binning	1×1, 2×2, 3×3
Dark Current	0.0005 e⁻/pixel/second at -20 ºC
Readout Noise	1.1e⁻ (High Gain), 3.5e⁻ (Low Gain)
Dynamic Range	16-Bit
Exposure Time Range	30 µs – 3600 seconds
Filter Wheel	12 slots
Filters	Johnson's B, V, R – SDSS u, g, r, i, z

It is a spectrograph capable of slit spectroscopy. It has a Crossed Czerny-Turner optical architecture.

Parameter	Value
Spectral Range	350 nm – 1 µm
Spectral Resolution (with 600 gr/mm grating)	at 650 nm, R=1700
Multi-Position Slit	25µm, 50µm, 100µm, 300µm
Calibration Lamp	Ar-Ne

Parameter	Value
Model	ZWO ASI 2600 MM Pro
Sensor Type	SONY IMX571 CMOS
Sensor Area	23.5 x 15.7 mm
Resolution	26 Mega Pixel 6248×4176
Pixel size	3.76µm
Exposure time range	32 µs – 300 s
Readout noise	1.0 - 3.3 e-
Quantum efficiency	91% at 460 nm

Parameter	Value
Slit Width	23 µm
Slit Length	3 mm
Guiding optics focal ratio	1:1
Guiding CCD maximum size	9.5x7.5 mm

Parameter	Value
Model	ZWO ASI174 Mini
Sensor Type	1/1.2″ CMOS IMX174LLJ / IMX174LQJ
Resolution	2.3 Mega Pixel 1936×1216
Pixel size	5.86 µm
Exposure time range	32 µs – 300 s

It is a high-resolution echelle spectrograph over a wide spectral range. Fiber optics have been used to increase the precision of radial velocity measurements.

Parameter	Value
Spectral Range	390 – 750 nm
Spectral Resolution	R=10000
Grating	79 grooves/mm
Calibration Lamp	Th-Ar

Parameter	Value
Model	ZWO ASI174 Mini
Sensor Type	1/1.2″ CMOS IMX174LLJ / IMX174LQJ
Resolution	2.3 Mega Pixel 1936×1216
Pixel size	5.86 µm
Exposure time range	32 µs – 300 s

ATA050 Telescope

General Specifications

Focal Plane Instruments

UVEX Motorized Spectrograph

eShel Echelle Spectrograph