Inter University Centre For Astronomy And Astrophysics Tender
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Inter University Centre For Astronomy And Astrophysics - IUCAA Tender
Machinery and Tools
Eprocure
Opening Date18 Mar 2025
Closing Date2 Apr 2025
Tender AmountRefer Documents
Costs
EMD
0Document Cost
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Description
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Contact
Tender Id
2025_IUCAA_853612_1Bid Award Id
ViewTender No
M24-0865Tender Authority
Inter University Centre For Astronomy And Astrophysics ViewPurchaser Address
-Website
http://https://www.iucaa.in/
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Documents
BOQ Items
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Ø1" or 25 mm Mirror Mount with monolithic flexure arm, 3 Adjusters, Monolithic Optic Retention
Specification:
Tip, tilt, and Z-axis adjustment with 100 TPI
Material Heat-treated stainless steel
Cleanroom and vacuum-compatible
Adjustment per revolution 7.7mrad/rev or less
Front plate translation 6mm or more
Angular range ±4°
(It should be compatible with the item number 6)
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InGaAs Switchable Gain Amplified Detector, 800 - 1700 nm, area 3 mm²
Specifications:
Detector type - InGaAs
Wavelength range - 800 - 1700 nm
Bandwidth - 10 MHz or larger
Active area size - 3 mm2 or larger
Gain adjustment and step - 10 dB steps (8 to 10 position rotary)
Output - BNC (DC coupled), 0-5 or 0-10 V range
Output impedance - 50 ohm
Peak response - 1 A/W or better within the operating wavelength range
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Quadrant photodetector head, 1000 - 1700 nm, area 3.0 mm Specifications:
Detector type - InGaAs
Wavelength range - 1000 - 1700 nm
Detector Bandwidth 100 kHz
Active area size - around 3.0 mm
Peak Responsitivity - 1 A/W or better within the operating wavelength range
Transimpedence gain - 10000 V/A or better
Output - X, Y, and sum analog signals through cable(s)
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50:50 Non-Polarizing Beamsplitter Cube, 700 - 1100 nm, Ø1′′ or 25 mm Specifications: Cube side length - 25 mm or 1′′ Clear aperture 20mm Wavelength Range - 700 - 1100 nm AR Coating (All Four Surfaces) with Ravg 0.5% in the wavelength range
Substrate Material - N-BK7 Beam Deviation - 5 arcmin or less
Surface Quality - 40-20 Scratch-Dig Absolute T and R are within 47 ± 10 %
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Ø 25.0 mm N-BK7 Plano-Concave Lens, f=-50 mm
Specifications:
Focal length tolerance - ± 1%
Diameter - 25.0 mm
RoC - 25.8 ± 1 mm
Material - N-BK7
AR Coated for the 1050-1700 nm wavelength range
Reflectance over coating range - 0.5 % or less
Surface quality - 40-20 Scratch-Dig
Surface irregularity - λ/4
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