Hello, I have a question about night monitoring. Which lens do you use for that ?
Regards. -- Éric Boudrand Le mardi 14 août 2012 à 16:37 +0300, Niko Lavonen a écrit : > Hello, > > We here at Metsähovi Radio Observatory acquired an NC353L camera earlier > this summer for all-sky monitoring of weather conditions. Overall we've > been pleased with the camera, but there is a problem with long exposures > we've not been able to figure out. It seems the camera won't do exposures > longer than approximately 38 seconds. Is there a known limitation in the > camera's hardware or software that imposes this limit? To get a view of > the night sky, we'd very much like to have the camera do exposures for up > to many minutes if needed. > > We've observed that when the camera reaches the "maximum" exposure time, > it starts reporting that the exposure is 1/1000000 seconds, while it can > be seen from the images that the actual exposure is still in the order of > many sedconds. We've tried raising the AUTOEXP_EXP_MAX value higher than > the ~38 second limit, but the camera won't go higher. We've also tried > manually setting the exposure time to e.g. 60 or 120 seconds, but in > these cases the camera has frozen. Our camera firmware version is 8.2.7. > > Regards, > > Niko Lavonen > Research assistant > Aalto University Metsähovi Radio Observatory > Metsähovintie 114, 02540 Kylmälä, Finland > e-mail: nlavo...@kurp.hut.fi > Phone: 029-4424856 > > _______________________________________________ > Support-list mailing list > Support-list@support.elphel.com > http://support.elphel.com/mailman/listinfo/support-list_support.elphel.com _______________________________________________ Support-list mailing list Support-list@support.elphel.com http://support.elphel.com/mailman/listinfo/support-list_support.elphel.com
