From here near SPOC, 32 Lynx disappeared and reappeared right on schedule. Star started to fade at 09:46:51.04396 UT First frame of "totality" 09:46:51.05397 UT Last frame of "totality" 09:47:05.03533 UT Star back to full bright at 09:47:05.04534 UT Although scientifically valuable, the event was not as visually impressive as those of grazing lunar occultations but seeing the star wink out so quickly and completely caught me by surprise. All-in- all, fun stuff on a frosty morning. Video: http://utahastro.info/temp/palma/PALMA26JAN2007.AVI (3.1 MB) http://utahastro.info/temp/palma/PALMA26JAN2007.MOV (4.2 MB) pw
So was it definitely a graze from your location, Patrick? There was some starlight twinkling at a very low level throughout the occultation. Dissappearance and reappearance were very gradual on the video- more gradual than I would have thought. Less than a second but slow enough to easily perceive. From your comment, you've seen some occultations that were much more gradual? Good work! --- Patrick Wiggins <paw@wirelessbeehive.com> wrote:
From here near SPOC, 32 Lynx disappeared and reappeared right on schedule.
Star started to fade at 09:46:51.04396 UT First frame of "totality" 09:46:51.05397 UT Last frame of "totality" 09:47:05.03533 UT Star back to full bright at 09:47:05.04534 UT
Although scientifically valuable, the event was not as visually impressive as those of grazing lunar occultations but seeing the star wink out so quickly and completely caught me by surprise. All-in- all, fun stuff on a frosty morning.
Video:
http://utahastro.info/temp/palma/PALMA26JAN2007.AVI (3.1 MB) http://utahastro.info/temp/palma/PALMA26JAN2007.MOV (4.2 MB)
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On 26 Jan 2007, at 17:49, Chuck Hards wrote:
So was it definitely a graze from your location, Patrick? Not a graze. In fact, I'm told my data compared to others indicate I was very close to the centerline.
There was some starlight twinkling at a very low level throughout the occultation. The light seen during "totality" is the light from the asteroid. The asteroid, BTW, showed up clearly on the tape up until a few minutes before the occultation when it and the star appeared to merge.
Dissappearance and reappearance were very gradual on the video- more gradual than I would have thought. Less than a second but slow enough to easily perceive. For those who like data, disappearance took from 09:46:51.04396 to 09:46:51.05397 (~.01")
From your comment, you've seen some occultations that were much more gradual? I can't comment on occultations by minor planets because I don't have anything to compare to. I've only seen one before and in that case the star just barely registered on the video and the MP did not show at all.
However, every time I've seen the Moon occult Aldebaran it always takes a few video frames to disappear (I'm told that's because Aldebaran is so big). Patrick
How long before we see a best-fit profile of Palma? Any idea? Thanks! --- Patrick Wiggins <paw@wirelessbeehive.com> wrote:
Not a graze. In fact, I'm told my data compared to others indicate I was very close to the centerline.
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On 26 Jan 2007, at 22:08, Chuck Hards wrote:
How long before we see a best-fit profile of Palma? Any idea?
Can't say for sure. There may not be a lot of data to work with. The predictions had folks going north to observer only to have the actual track move south. So far I've only heard of one other positive result. I'll let you know if I hear anything else. Patrick
participants (2)
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Chuck Hards -
Patrick Wiggins