Astrophotography Japan / Planetary Imaging Insights (Episode 27)
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- Опубліковано 25 сер 2024
- The resolution of planetary images is directly dependent on the quality of video data (among other factors). Camera specifications and computers also dictate the frame rate of the recorded video. Understanding these relationships helps to explain why video ROI settings influence image resolution. Also, the effects of atmospheric turbulence on planetary image resolution is demonstrated. Images taken during good and poor seeing conditions are compared, as well as two different cameras (DSO vs. planetary camera). Finally, my new favorite planetary image stacking & processing software called “AstroSurface” is briefly introduced.
01:40. Equipment Review
02:30. ScreenCapture of 1080P Video
03:35. IMX533 Sensor Size & Video Capture ROI Settings
05:41. Day 1 imaging of Jupiter
07:43. Images take at different ROI
08:40. Reason why smaller ROI imaging is better
11:55. Day 2 images of Jupiter
13.16. Comparison of images taken under different seeing conditions
14:32. Motion blur from Jupiter rotation
16:25. Camera comparison
21:32. New ASI664MC Planetary Camera
22:20. Uranus
23:14. Summary
24:05. AstroSurface versus ASIStudio
24:35. Final Comments
Excellent Video, very informative.
Thanks Ray. That was my intention (being informative)! Clear skies!
Very nice video again! Have a nice weekend.
Thanks! You too Matthias.
Really enjoyed this! I too have the 533 but haven't yet tried my hand at planetary imaging. This is a great primer for my first attempts. Thank you.
My pleasure John. Seems like you were exactly my target market! Clear skies!
Hallo Paul,
Congratulations with this very nice en informative video.
In addition to your scientific approach, there is plenty of room for humor, nice :).
I am inpressed with your results using a modest aperture.
Especially your image from Uranus is great.
Do you use any Barlow's or filters with your camera's e.g. a IR blocking filter?
I use a Vixen VMC110L to show people the moon and the planets.
Given your great results with the SVBony Mak, I'm going to try some planetary imaging with my VMC110L and my old Vixen GPDX mount.
The VMC110L has a built in flip mirror so that should be an advantage.
Thanks again and have a nice day.
Kind regards Paul 2
Hi Paul. Thanks for the nice comments. When working with my 80ED scope (560mm focal length), I would definitely use a 3x Barlow lens to get enough magnification and resolution. But with the MK105 (1365mm focal length), it is too difficult. I also believe that it won`t necessarily help, unless the sky conditions are outstanding on that night. In this city area, we do not get very good seeing conditions most of the time. If I use a 2x barlow on my MK105, the theoretical arc sec per pixel resolution with my camera may be less than the seeing conditions allowed by the atmosphere. I did a calculation once and compared it to seeing resolution values on MeteoBlue and it was indeed true. So I doubt that a barlow on the MK105 will help; only make things much more difficult to handle. The Vixen VMC110L is a slightly lower magnification, so a 2x barlow might be useful. I have done planetary imaging with no filters and with a UV.IV filter, but I do not recall a difference. And I never tested to see if using the filter actually helped. BTW......thanks, you gave me some ideas for another video, perhaps! Clear skies!
Really good video, tons of usful information! I have the 533mc pro and now considering to get a good planetary camera replacing my 120mm mini wich i use for guiding. But now im not sure if it would add anything over 533 MC Pro.
Hi Syrius, thanks for the nice comments. My feeling is the full-well depth is the biggest issue with some planetary cameras......but I cannot be certain. I do not have enough experience. Take a look at my other video on my two cameras....episode #12. I have gotten some great nebula and galaxy images with the 678MC planetary camera. And I like to have a back-up and the digital zoom for some images. I still think owning one is worthwhile. More than likely, I will buy the new ASI664MC and use the 678MC as an addition guide camera. The 664MC planetary camera`s full well depth among other features look like a great combination for a planetary. My video intention was not to dissuade or confuse you (sorry); just to report my experiences and show the data. Thanks for watching Astrophotography Japan!
BTW, I just tried out a new guide scope last night....the 32mm F4 Guide scope from ASKAR. Hands down, it provides the clearest images with great contrast ..... that I have ever seen by a guide scope! Love it!!
Hi Paul, very good images and very interesting cameras. They are the same ones I have :-) Now that I've finished the move I also wanted to try to compare myself with the planets but I'm blocked by the bad weather. Searching for various software suitable for this type of shooting I found two very interesting and apparently very popular software: 1) Pipp; 2) Winjupos. The second allows the derotation of the planet, in this case Jupiter, to increase the resolution and sharpness of the final result. Again with regard to Jupiter, the maximum duration of the shots must not exceed six minutes and the best results (so I read) are obtained with 3-4 minutes. I found this video very informative:
ua-cam.com/video/vcioBfAldjQ/v-deo.html
it's in Italian but if you put subtitles you shouldn't have any problems ;-)
Hi Massimo! Thanks for the comments...... You moved? New city / new job? I heard of Pipp, but not Winjupos. The "derotation" feature sounds really interesting. Usually I take multiple videos at different lengths including something long and short and develop everything. But as I said in the video, about 4 minutes is the limit by the camera or the ASIAIR because the file size seems to be limiting. Clear skies!.