An Astronomical Learning Curve 2

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  • เผยแพร่เมื่อ 28 มิ.ย. 2024
  • The original video recording that was posted of Graeme Awcock's presentation "An Astronomical Learning Curve...", from 16th April 2024 was missing several key software demonstrations, which took place during the first 20 mins of the talk; - this was because of a hitch that prevented video from being recorded initially. However, ALL sound was recorded.
    In the first iteration of the posted video, this missing video was replaced by a basic overlay of the presentation slides to fill in for the missing video. This version was watched 54 times, as of 26th June 2024.
    However, the speaker, Graeme Awcock, has now significantly enhanced the video by, not only reconstructing the MISSING software demonstrations, but also by replacing ALL software demonstrations that were originally shown from an 'audience perspective' (as recorded by the video camera), with versions shown from a 'first-person perspective'. This has significantly enhanced the clarity of the software demonstrations, and made them easier to follow. We hope you find this enhanced version useful.
    In addition, Graeme would like to draw attention to a few notes about the presentation recording:
    Firstly errata; - on the slide entitled "Initial Observation Heads-Up: Callisto Shadow + GRS; 18-October-2021" there are no less than THREE erroneous references to October as the month of the event, including in the title of the slide itself! As correctly noted in the presentation voiceover, the observation took place on 18th of SEPTEMBER 2021, and it was forecast in the September 2021 edition of 'Astronomy Now' Magazine, p55, and the September 2021 edition of the 'BBC Sky At Night' Magazine, p47. Please accept Graeme's apologies for these baffling errors on the slide!
    Next, some notes about the retro-fitted software demonstrations:
    RE Stellarium demo; the rotation angle of the red 'field-of-view' box in the 'sensor view mode' was 45 degrees clockwise. This was programmed into the view using that sensor in Stellarium, to approximate to the degree of rotation of the camera's frame, relative to the true vertical, in the telescope's eyepiece tube that was applied during the observation.
    RE PIPP Autostakkert3 demos; - the run-timings differ on-screen from that mentioned in the voiceover because the inserted demo was recorded using a different computer than that used to deliver the presentation. Thus the run times may be different (faster) than those mentioned in the live presentation VoiceOver.
    RE Registax6 demo; - Graeme recognises that the amendments to denoise values from Wido's ultimate 'linear wavelets scheme', which was loaded up from stored parameters in the live presentation, are not clearly described in the voiceover, nor are they necessarily clear to read off-screen in the retro-fitted 'first-person' view of the demo. The first-pass amendments that Graeme applied to those denoise values were:
    Layer 1: 0.50
    Layer 2: 0.40
    Layer 3: 0.30
    Layer 4: 0.30
    Layer 5: 0.20
    Layer 6: 0.20
    Note that further amendments to these values were committed later in the demonstration, but in each case these are clearly described, verbally, in the VoiceOver.
    Finally, please note that there was a short sound and video 'glitch' in the video, which was present in the original recording. It occurs at around 1hr 00mins 40secs into the recording. No significant video was missed, but the actual dialogue was originally "So, I would say the wavelets make a really impressive DIFFERENCE, don't they, and they have enhanced the image to a remarkable degree. Yes, good, that's good..."
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