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ptrcktrcht52

Canon 100D and HD movies

Question

Dear all,

I use BYE with a 100D Canon. When I record a movie using "Planetary" menu, the format is 960x640. I dont find the solution to record movies in the HD format (1920x1080).

Is there a solution to do that?

Thank you in advance for your support.

Best regards

Patrick Trochet

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Patrick,

The short answer to your question is No.

BYE uses the Canon EOS Software Development Kit (SDK) to control the camera. The SDK does not provide 3rd party apps access to video mode. Instead BYE downloads LiveView frames and optionally assembles them into a video file. Fortunately, the 5X zoom mode for LiveView gives you a 1:1 ratio of sensor pixels to image pixels. Since planetary objects are small targets,  the small field-of-view of 5X mode is usually adequate.

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HD is a marketing buzz word.

HD does not equal quality, it fact it destroys quality.

Post above from Rick explains it very well.  Use live view 5x for a 1:1 resolution and never look back.

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Thank a lot admin and astroman133.

An other solution is to use a software like EOS Utility but with the disadvantage to have to close BYE before and the O'telescope plateform , the 2 softs cannot run together

Best regards

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4 hours ago, ptrcktrcht52 said:

Thank a lot admin and astroman133.

An other solution is to use a software like EOS Utility but with the disadvantage to have to close BYE before and the O'telescope plateform , the 2 softs cannot run together

Best regards

I think you miss understood.  You should not (as in never) use HD resolution for planetary imaging, it destroys quality.  The only way to get a 1:1 resolution (the best quality) is to use live view 5x.

This said, you do everything in BYE. No need to switch between EOS Utility and BYE.

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Dear admin,

 

I agree for planet acquisition but for the moon I think the field will be larger with a 1920 x 1080 pixels in one shot avoiding to merge several pictures to get the same field.

Is my comment wrong?

Have a nice day

Best regards

Patrick Trochet

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Patrick,

You are correct. However, with BYE Planetary mode in 5X zoom you will get better resolution. The downside is having to shoot a mosaic and combine the images. 

The attached image was shot by me in 2012 with an EOS Rebel Xsi and a Celestron Edge HD 800 SCT. I shot 800 frames in each of 6 positions by moving the BYE zoom box around. I used RegiStax to combine each of the videos into a single image and them assembled them with RegiStar.

I think that the resulting image was worth the extra work.

Moon-2012-10-24.jpg

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1 hour ago, ptrcktrcht52 said:

Dear admin,

 

I agree for planet acquisition but for the moon I think the field will be larger with a 1920 x 1080 pixels in one shot avoiding to merge several pictures to get the same field.

Is my comment wrong?

Have a nice day

Best regards

Patrick Trochet

Nothing wrong your comment, I was just re-iterating the importance of 5x and 1:1 pixel resolution.

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Patrick,

When we speak of 1:1 Pixel Resolution being "the best thing" for Imaging (DSO or Planetary/Lunar Video, the longer form of the reason is thus:

The Canon 100D has a Sensor Resolution of 5184 x 3456 Pixels. 

When you take a Still Image, all 17915904 Pixels are recorded 1-for-1 into the RAW file.  Once processed, the resulting Image will have "Full Resolution" of 1:1 (until you Crop or Resize).

When you take a Video, the Camera is still recording the Full Sensor.  But when it comes time to render the Output File (AVI or MP4 or...) it will output at most 1920x1080 "Output Pixels".  Each Pixel in the Video is an Interpolated rendition of (5184/1920)= 2.7 Horizontal Pixels and (3456/1080)= 3.2 Vertical Pixels.  Or, if the 16:9 Format is selected then Top/Bottom Masks will be employed and you will get 2.7 Vertical Pixels interpolated into each Output Pixel.  (Obviously, this is not Optimum when you are attempting to get Maximum Detail out of a Telescopic shot of the Moon.)

Thus, when BYE uses the Internal Crop Frame of the LiveView functionality, and captures a 1:1 Pixel Resolution Video (even if only 960x640), it gives us the Best Resolution.

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Hi everyone

 

Thank you a lot to admin astroman133 and s3igell for your useful advices

 

Nota : when you shut down BYE, the O'Telescope BackgroundWorker Console continue to operate generating an issue if you want to use a Canon application.To allow that you have to shut down O'Telescope BackgroundWorker using Windows task manager, not very practical

Best regards

Patrick Trochet

 

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The background worker is optional, default is off.  If yours is running it means you have manually enabled it in advance settings.

When enabled, the background worker stays alive for up to 5 minutes after you closed BYE to ensure is has sufficient time to process queued images in case you close BYE immediately after taking an image or a planetary video.

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