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Discussion on BYE live with a telesope on a planet


Dirty Harris

Question

Just curious Guylain, do you think it's possible that somewhere down the road, you might be able to have another open discussion similar to the one you had some while back on BYEOS. And this time be acutally hooked up to a telescope, and do some planetary imaging?

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That is a neat idea, but why wait for Guylain or some other BYE user to put such a session together? Have you tried planetary imaging with BYE or BYN? If you have issues, I am sure that the group will be responsive with assistance.  What problems are you having?

 

Also, I did not see your location in your profile, but if there are any other BYE/ BYN users near to you, perhaps you could arrange to get together.

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Actually I'm in Colorado, where we've simply gone to "POT" Just having some issues with nailing down focusing in planetary imaging using BYE, and a star to focus. Would welcome any other suggestions on what others are doing for sharp focus. Thanks.

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Sure, I'd be willing to but to be completely honest I don't do planetary imaging that much, I mostly do DSO's.

 

If someone is willing to do a presentation that is in the deep-end with Planetary imaging the session might be more valuable... and I would attend as a key resource during the entire presentation of course... but the lead would/should be an actual planetary imager.  Just my 2 cents.

 

Regards,

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I would suggest focusing on a bright star near the planet. The focusing procedure is just like you were going to shoot a DSO. Then slew to the planet to do your planetary capture.

 

The unprocessed video and stacked image won't typically look very good before applying sharpening and other post processing enhancements.  The critical capture item is to shorten the exposure and/or ISO to darken the image so you can see planetary surface details in the LiveView display.  You can always brighten it to suit your preferences during post-processing.

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Thanks Guylain, we'll keep it all in mind. I do a fair amount of planetary imaging, and would just like to see what someone else does to get near razor sharp focus. My images are very close but I feel they could be/ should be better. We're polar aligned, on a wedge, dual stage Crayford focuser,dew shield, on and warm, using BYE to frame&focus on a star, then to planetary to record video. As I say the pic's I get after stacking in registax-6 are pretty darn good, but I see others that are sharper and more definition. Would a guide scope on a star be of any help on my C-11 SCT fork mount with canon Rebel T-3 and telvue 2.5x barlow? Again thanks to all for any help. Dirty Harris.

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Thanks Guylain, we'll keep it all in mind. I do a fair amount of planetary imaging, and would just like to see what someone else does to get near razor sharp focus. My images are very close but I feel they could be/ should be better. We're polar aligned, on a wedge, dual stage Crayford focuser,dew shield, on and warm, using BYE to frame&focus on a star, then to planetary to record video. As I say the pic's I get after stacking in registax-6 are pretty darn good, but I see others that are sharper and more definition. Would a guide scope on a star be of any help on my C-11 SCT fork mount with canon Rebel T-3 and telvue 2.5x barlow? Again thanks to all for any help. Dirty Harris.

It is not really necessary to have good Tracking / Guiding in order to get the sort of Highly Detailed Images that you desire - in fact other than the need to place and keep the entire Disk of your Target Planet (and maybe its visible Moons or Rings) within the FOV of your Camera there is no need for Tracking at all.

Video Stacking for Planetary Imaging is dominated by the effort to capture Very Quick Exposures so that you have multiple chances of "Lucky Seeing" - where the Atmospheric Distortion has lessened for at least the duration of an Exposure (or even just part of a Planetary Image for that single Exposure - given current Stacking Capabilities).  Compared to that, the slow motion of inaccurate Tracking has no appreciable impact on your eventual Processed Image.

On the other hand: Good Seeing Conditions, Great Optics, Fast Cameras with High Pixel Resolution, Good Focusing Skills, and Aperture are the main components of Good Video Image Capture.  And Good Video Stacking and Processing Software and Skilled Application of Image Processing Workflows are also required in order to realize the goal of Great Planetary Images.

 

BYE/BYN holds a place in this by 1) Facilitating Accurate Focusing; and 2) Empowering the DSLR to generate 1:1 Pixel Ratio Video at appreciable Frame Rates in an App with an Easily Understood GUI.

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Thanks "Milky Way" to date, that is the most concise answer I've heard yet. And as I say my final image is truly not bad, I just see others getting somewhat sharper, or defined images using the same equipment  I have, and it caused me to wonder what I am doing wrong. But you're quite right in pointing out that other variables in the equation like seeing, transparency, light pollution, jet stream location and etc. all figure into it.. And perhaps I am just at the limits of me and my equipment abilities. Thanks though to all for your input, we'll try to implement all suggestions.

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