Added a new -rotate optional argument to keogram to compensate camera…

[agnunez]

Even if your allsky camera is not oriented North-South resulting in trailing star traces, you can compensate this by rotating every source image before extracting the meridian pixel column. The algorithm used creates a wider black destination image to avoid cropping so, the resulting accumulated image will show black stripes up and down the relevant data, wider as closer to 45 degrees.
The parameter added to keogram is "-rotate" as double integer in degrees, positive values will produce anticlockwise rotation.
The resulting image will show much better pinpoint stars on those not aligned North-South cameras like mine.

[thomasjacquin]

Thanks Agustin! That's a nice feature, especially if you don't have an easy access to physically rotate the camera.

[agnunez]

Thanks Thomas, is my case. My robotic observatory is 2000 km away), but I suppose there will be more people in that situation with the camera on the roof or inaccessible places. Also, I'm curious to apply keogram in different angles.. and look for different interpretations of cloud motion and wind, but.. it will take time and experimentation. Thanks for your software <https://www.avast.com/sig-email?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=webmail> Virus-free. www.avast.com <https://www.avast.com/sig-email?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=webmail> <#DAB4FAD8-2DD7-40BB-A1B8-4E2AA1F9FDF2> El mar., 22 sept. 2020 a las 20:44, Thomas Jacquin (< [email protected]>) escribió:

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Thanks Agustin! That's a nice feature, especially if you don't have an easy access to physically rotate the camera. — You are receiving this because you authored the thread. Reply to this email directly, view it on GitHub <#262 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AAII4PUPJ7DETQPUUKJJ43TSHD5CHANCNFSM4RVK2L2Q> .