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D300 x5 MODE


steve4166

Question

Hi,

I'm using a Nikon D300 with BYN 2.0.1. Assuming I'm not mistaken, when using the planetary imaging mode, BYN utilises the "live view" mode which restricts the resolution to that of the camera back panel, that being 640 x 480. With the current telescope and eyepiece combination I'm using (eyepiece projection), Jupiter is currently about 220 pixels across at the full resolution of the camera, but in live view mode, Jupiter is only 36 or so pixels across which is too small to show much detail. Whilst there is not much I can do about this, I'm wondering if the 5x mode available in BYN actually results in a useful increase in resolution compared to the 640x480 live view, or merely digitally  blows up the image 5 times with no increase in effective resolution.

If someone can enlighten me on the actual effect of the x5 mode with the D300, I'd appreciate it.

Thanks Steve

 

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Steve,

I am not a Nikon owner, but I know that Nikon does not present the 5X zoom in quite the same way that Canon does. I would suggest that you just try imaging at 5X zoom.

Here is what Canon does...Planetary imaging with BYE uses LiveView frames to build a video. The camera downscales the image to fit on the LCD display. This is what BYE downloads. The term 5X Zoom is confusing since it is really a portion of the full resolution image that is cropped, without scaling, to fit on the LCD screen. This means that the 5X zoom gives the best possible resolution image since the image is at the full resolution of the sensor.

You might want to consider upgrading to BYN 2.0.4 to get the numerous improvements and fixes.

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7 hours ago, astroman133 said:

Steve,

I am not a Nikon owner, but I know that Nikon does not present the 5X zoom in quite the same way that Canon does. I would suggest that you just try imaging at 5X zoom.

Here is what Canon does...Planetary imaging with BYE uses LiveView frames to build a video. The camera downscales the image to fit on the LCD display. This is what BYE downloads. The term 5X Zoom is confusing since it is really a portion of the full resolution image that is cropped, without scaling, to fit on the LCD screen. This means that the 5X zoom gives the best possible resolution image since the image is at the full resolution of the sensor.

You might want to consider upgrading to BYN 2.0.4 to get the numerous improvements and fixes.

Hi Rick,

Thanks for your reply. My fear is that the Nikon does not behave in quite the same way as the Canon unfortunately. Rather than a a cropped portion of the image as you describe, I think it may just be magnified. Certainly my attempt to image Jupiter was disappointing using this mode, although I'm pretty new at this and not yet able to fully assess how good the seeing conditions were relative to optimal conditions. I'll certainly upgrade to 2.0.4, although I did look through the notes and there didn't appear anything relevant to this issue.

Thanks Steve

 

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10 hours ago, admin said:

I'm afraid all Nikon will do poor with planetary recording, none of the Nikon Models provide a 1:1 pixel resolution in live view like most Canon do :(

Thanks Guylain. Not the answer I ideally wanted of course, but at least I know the score now. 

Steve Pattinson

 

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