Quick Specs
GPM585M
IMX585 High-Sensitivity Mono Guide Camera
GPM585M is backordered and will ship as soon as it is back in stock.
Delivery and Shipping
Delivery and Shipping
Shipping options and checkout-calculated delivery details are shown before payment.
Warranty and Support
Warranty and Support
For setup support, software downloads and warranty service, contact ToupTek Astro support with your order information.
Reviews
Reviews
Payment & Security
Payment & Security
We ensure secure processing of your payment information and do not retain or have any access to your credit card details.
Full Specifications
Full Specifications
GPM585M
GPM585M is backordered and will ship as soon as it is back in stock.
Meet GPM585M
Infrared Sensitivity & Precision Guiding
The GPM585M is a high-performance guide camera for deep‑sky autoguiding and infrared imaging. Housing Sony's IMX585 monochrome back‑illuminated CMOS sensor (1/1.2‑inch, 2.9 µm square pixels, 3840×2160 resolution), it achieves outstanding performance in sensitivity, dynamic range, full‑well capacity and read noise. It features excellent near‑infrared response across the 650–720 nm band, and performs great for infrared Milky Way capture from light‑polluted urban locations.
Unlock Infrared Possibilities
The GPM585M is fitted with an AR-coated protective window. The original window measures 19 mm in diameter and 0.55 mm in thickness, and is secured within the adapter by a retaining ring.
For expanded infrared imaging, the camera's front window can be easily removed and replaced with a user-selected filter. Compatible third-party filters may be 19–22 mm in diameter and approximately 1 mm thick, making it easy to adapt the camera for infrared imaging applications.
High‑Performance Readout
The GPM585M incorporates a native 12‑bit ADC delivering 4,096 grayscale levels for richer tonal detail compared to conventional 8‑bit output. Supported by hardware ROI, it achieves higher frame rates when capturing smaller regions, perfectly suited for high‑speed autoguiding targeting guide stars.
Additionally, software‑based digital binning ranging from 1×1 to 8×8 stacks or averages adjacent pixels to boost signal‑to‑noise ratio. This function proves particularly useful for faint‑star guiding, enhancing guide‑star signal strength and supporting stable guiding lock.
GPM585M Guide Camera Performance Analysis
CS‑mount Design & Wide OAG Compatibility
The GPM585M features a CS‑mount (12.5 mm length) with a flange focal distance of 8.5 mm. Its extended front barrel enables wider compatibility with OAG off-axis guiders. It supports 1.25‑inch filters when paired with a 1.25‑inch extender.
OSC vs. Mono
Which Do You Need For Autoguiding?
One-Shot Color (OSC) Guide Cameras
Equipped with an RGB Bayer filter array, one-shot color guide cameras deliver colour star images directly without extra filters. They are convenient for quick setup and visual checking of star colour. However, the Bayer filter blocks part of incoming photons, reducing sensitivity. Pixel interpolation also slightly lowers the effective resolution, making OSC less ideal for faint guide stars or light-polluted sites.
Monochrome Guide Cameras
Without a Bayer color filter array, monochrome guide cameras use the available light more efficiently and avoid color-filter losses. This delivers higher sensitivity, improved signal-to-noise ratio, and more reliable detection of faint guide stars. In light-polluted urban skies, monochrome cameras can make it easier to identify and lock onto dim guide stars. With no need for color imaging or a filter wheel during autoguiding, they are an excellent choice for deep-sky astrophotography setups.
Why Choose GPM Series Guide Camera
Advanced Sony Sensor Technology & Built-In Frame Buffer
GPM series guide cameras feature advanced Sony CMOS sensors selected for high sensitivity, low read noise, and dependable imaging performance. Built-in frame buffers temporarily store image data before transfer, helping ensure stable, complete delivery and reducing the risk of dropped frames during high-speed capture or multi-camera operation. Selected GPM models further incorporate Sony STARVIS 2 technology for enhanced low-light and near-infrared performance.
High-Sensitivity, Low-Noise Camera for Autoguiding & Multi-Purpose Imaging
With high quantum efficiency and low read noise, the GPM series reliably detects faint guide stars for precise autoguiding. Beyond autoguiding, it is also well suited to lunar, white-light solar, and planetary imaging.
Compact Form‑Factor & Versatile Compatibility
Featuring a compact body and standard 1.25‑inch interface, the GPM series guide camera easily attaches to OAG. When paired with the optional 1.25‑inch extension tube, it is compatible with telescopes equipped with 1.25‑inch eyepiece holders.
Flexible Interfaces
Equipped with USB 2.0 Type‑C (reversible plug) and ST4 autoguiding port for mount connection.
What's in the Box
Frequently Asked Questions
What is the difference between the GPM series and G3M series cameras?
The GPM series consists of dedicated guiding cameras equipped with a USB 2.0 interface, designed for lightweight and cost-effective autoguiding.The G3M series is a high-performance planetary camera line powered by a high-speed USB 3.0 interface (ideal for high-frame-rate planetary imaging while doubling as a guide camera).
What accessories are needed for infrared Milky Way imaging with GPM/G3M cameras?
For infrared Milky Way photography, we recommend using an LP825nm IR-Pass filter paired with a compatible CS-mount lens. To make setup easy, we offer a dedicated Infrared Milky Way Accessory Kit for both GPM and G3M series cameras, available for separate purchase.
What software can be used to control the GPM series cameras?
GPM series cameras can be controlled via the StellaVita App and ToupSky software. They are also compatible with ASCOM, INDI and DirectShow SDK. If third‑party software supports these SDKs, you may download the required drivers from the ToupTek official website and install them for use within your third‑party application.
