Prototype Version 2
Feedback from the first prototype
The following feedback has been considered:
- Minimize the cross-section of the camera; ideally, it should be possible to use the camera in the primary focus of the telescope (Jonas, Christoph, Christian Weber)
- Provide a version with a bigger chip; the AR0130 is quite small (Martin, Christoph)
- Provide a generic input that can be visualized in the image (Peter)
- Make the 1PPS signal available as an output
- May be provide an interface for an external GPS and 1PPS signal, so that the camera can be used in domes with no GPS reception (Christoph)
- Use a GPS module with integrated antenna (Stefan)
- SharpCap compatibility (various people)
- ASCOM driver (Christian Weber)
- Compatibility with photo mounts (Christian Weber)
- Cool the chip, heat the window, silent, integrated USB hub (Christian Weber)
Design of the second prototype
The second prototype will have the following attributes:
- cylindrical form factor, 2 inch diameter, length about 90mm, M42x0.75 connection
- separate PCB for the sensor
- test bigger sensors (IMX178, IMX174, IMX428)
- use GPS module with integrated antenna
- generic input, 1PPS output, 1PPS+UART input
- precise crystal, e.g. LFTVXO070168
- calibrate the crystal with the GPS signal, save the calibration in the PROM
- USB C connector
- microSD card for in-camera recording
- issues: write speed, patent licensing, 3.3/1.8V modes
- onboard RAM for frame buffer, dark subtract, picture-in-picture
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Table of Contents
- Project Overview, Timeline and News
- Prototyp Version 2
- V2A Boards (updated: 22 Jun 2019)
- V3 power controller design
- Build Prototype Camera Overview
- Camera Control Interface
- Binary Overlay Format Specification
- Computer Specific Issues
- 8 Bit vs. 12 Bit Recording
- FITS header
- Camera Extension Unit Definition
- Packaging
- Konformität
- Image Sensors
- Software Downloads
Inhalt (Seiten in Deutsch)