SpectraGaze Systems has raised Rs 3.7 crore in a seed round led by venture capital firm GVFL. The Ahmedabad-based startup builds optical imaging sensors and electro-optical payloads for space, defence and scientific use. Angel investors also participated. It is the company’s first external fundraise.
SpectraGaze was founded in 2023 by Arup Banerjee, a former ISRO scientist with 23 years of experience. The company ran for three years on money from customer programmes before this round. That detail matters more than the cheque size.
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What the company builds
SpectraGaze makes imaging sensors and payloads for space, defence and scientific applications. Its product roadmap covers Earth observation, space-based intelligence and surveillance, greenhouse gas mapping, and drone-based hyperspectral imaging.
The money will go into product development, deliveries on existing programmes, hiring, testing infrastructure and business development.
“Building the business through customer-funded programmes has helped us validate our technology and establish strong industry relationships,” Banerjee said. He said the round would let the company accelerate product development and reach a wider set of applications.
The import dependence it is attacking
Infrared detectors are a choke point for Indian space and defence programmes. The devices are largely imported, which makes supply chains slow and subject to export controls. SpectraGaze’s stated aim is to build the technology in India.
Its clearest proof point is the iDEX PRIME Challenge, which it won for developing an Infrared Detector Dewar Cooler Assembly that includes the detector itself. The brief was set by India Optel Limited under the iDEX PRIME X round. It asks for an infrared detector that is currently not made in India.
That framing is the reason a Rs 3.7 crore cheque got announced at all. Strategic technology that no domestic supplier makes is a policy priority, and government-backed programmes are how early capital reaches it.
The customer list is the real asset
SpectraGaze counts ISRO, the Physical Research Laboratory and Kaynes Technology among its customers. It has delivered an infrared detector and a test system to ISRO. It has also secured an image sensor development contract, in partnership with AMETEK, for ISRO’s next-generation HRSAT programme.
HRSAT is a high-resolution Earth observation constellation. Use cases run from mapping to disaster management. It was first planned as three satellites. It was cut to two, HRSAT 1A and 1B, and is now scheduled to launch together on a PSLV in 2027. The satellites are designed to image at roughly one metre resolution in panchromatic mode.
On the commercial side, SpectraGaze is building a hyperspectral imaging camera for a 3U satellite. It is due to deliver it to Kaynes Technology in November 2026. Kaynes set up a wholly owned subsidiary, Kaynes Space Technology, in June 2025. In its first quarter FY27 earnings call, the company said its first 3U satellite was in the prototype phase, targeting a mid-2027 launch.
Mihir Joshi, managing director of GVFL, said SpectraGaze had built a strong technology foundation through customer-funded programmes and established relationships with key institutional customers.
The capital question in deeptech
Indian spacetech startups have raised about $871 million across 241 rounds since inception, according to Tracxn data as of July 2026. The sector raised a record $200 million across 53 rounds in 2025, and about $113 million across 24 rounds in 2026 up to July.
Against those numbers, Rs 3.7 crore is a small round. That is the honest read of the deal. Detector development is capital intensive, and a seed cheque of this size funds engineering and testing, not a fabrication line.
What makes the model work is the customer-funded approach. SpectraGaze sold programmes before it sold equity, which is unusual in a market where many deeptech startups raise first and look for customers later. The risk is concentration. A handful of institutional customers means a handful of delivery timelines that the company does not control.
What to watch
Three things will show whether this round was a step or a ceiling. The Kaynes hyperspectral camera, due in November 2026, is the nearest delivery milestone and the one that tests whether SpectraGaze can ship a commercial payload on schedule.
Next is HRSAT, where the company’s image sensor work sits inside an ISRO programme scheduled for a 2027 launch. A slip there pushes revenue and credibility at the same time.
The third is whether SpectraGaze moves from custom programmes to catalogued products. Custom work pays the bills. Products scale. For Indian detector manufacturing to matter, at least one company has to get to the second.