Search found 17 matches

by Pon
Fri Dec 31, 2021 3:31 pm
Forum: The Bridge: Discuss an Astronomy Picture of the Day
Topic: APOD: Comet Leonard behind JWST Launch Plume (2021 Dec 27)
Replies: 48
Views: 20588

Re: APOD: Comet Leonard behind JWST Launch Plume (2021 Dec 27)

Amen to that! And for the record, I, for one, never thought the shot was faked, only that it needed further explanation of it's unusual appearance. Unusual to me anyway - my posting history will show that I find a lot of stuff unusual looking :) Until someone addresses my concern about an Ariane ro...
by Pon
Fri Dec 31, 2021 12:46 am
Forum: The Bridge: Discuss an Astronomy Picture of the Day
Topic: APOD: Comet Leonard behind JWST Launch Plume (2021 Dec 27)
Replies: 48
Views: 20588

Re: APOD: Comet Leonard behind JWST Launch Plume (2021 Dec 27)

In any case, the point is this: whatever they did above Thailand, you can bet it was part of the mission plan and scheduled to the second, and not something that put the probe at risk. By design. I believe by the time I observed it, JWST was already kilometers away from the spent upper stage/exhaus...
by Pon
Fri Dec 31, 2021 12:40 am
Forum: The Bridge: Discuss an Astronomy Picture of the Day
Topic: APOD: Comet Leonard behind JWST Launch Plume (2021 Dec 27)
Replies: 48
Views: 20588

Re: APOD: Comet Leonard behind JWST Launch Plume (2021 Dec 27)

I remain confused about many aspects of what I am seeing in your beautiful image but I no longer question that is the result of the Ariane 5 second stage that launched the JWST. (My apologies if you took offense.) I'm not offended. As I said it's perfectly ok to be skeptical. However, having been r...
by Pon
Thu Dec 30, 2021 12:10 am
Forum: The Bridge: Discuss an Astronomy Picture of the Day
Topic: APOD: Comet Leonard behind JWST Launch Plume (2021 Dec 27)
Replies: 48
Views: 20588

Re: APOD: Comet Leonard behind JWST Launch Plume (2021 Dec 27)

Pon - Thank you very much for the time and care you've spent following the posts, clarifying and correcting our understanding of your images, and sharing your many years of experience recording and figuring out the plume(s). For us, one APOD sometimes does not tell enough information, and for sever...
by Pon
Wed Dec 29, 2021 5:57 am
Forum: The Bridge: Discuss an Astronomy Picture of the Day
Topic: APOD: Comet Leonard behind JWST Launch Plume (2021 Dec 27)
Replies: 48
Views: 20588

Re: APOD: Comet Leonard behind JWST Launch Plume (2021 Dec 27)

Pon - Thank you very much for the time and care you've spent following the posts, clarifying and correcting our understanding of your images, and sharing your many years of experience recording and figuring out the plume(s). For us, one APOD sometimes does not tell enough information, and for sever...
by Pon
Wed Dec 29, 2021 2:10 am
Forum: The Bridge: Discuss an Astronomy Picture of the Day
Topic: APOD: Comet Leonard behind JWST Launch Plume (2021 Dec 27)
Replies: 48
Views: 20588

Re: APOD: Comet Leonard behind JWST Launch Plume (2021 Dec 27)

https://apod.nasa.gov/apod/ap181013.html https://apod.nasa.gov/apod/ap181012.html https://apod.nasa.gov/apod/ap171224.html https://apod.nasa.gov/apod/ap120329.html Ok, so those rocket plumes and trails have varied appearances, but none look like a sphere. The sphere is harder to explain. But I did ...
by Pon
Tue Dec 28, 2021 3:57 pm
Forum: The Bridge: Discuss an Astronomy Picture of the Day
Topic: APOD: Comet Leonard behind JWST Launch Plume (2021 Dec 27)
Replies: 48
Views: 20588

Re: APOD: Comet Leonard behind JWST Launch Plume (2021 Dec 27)

I didn't follow all the technical back and forth discussion above, and maybe I missed it, but what's the significance of the plume being surrounded by an almost perfect sphere, seemingly centered on the point of the cone of what I would call the plume proper? jwst plume from tailand.JPG That would ...
by Pon
Tue Dec 28, 2021 3:33 am
Forum: The Bridge: Discuss an Astronomy Picture of the Day
Topic: APOD: Comet Leonard behind JWST Launch Plume (2021 Dec 27)
Replies: 48
Views: 20588

Re: APOD: Comet Leonard behind JWST Launch Plume (2021 Dec 27)

Pon, nice response to the questions. I was similarly puzzled about what we're looking at in your image. I also was thrown by the listed facebook time (7:12pm, 8 min before launch :). I had your location, and the sky field looked right, and the comet was the key to nailing down the day (Dec 25). I d...
by Pon
Tue Dec 28, 2021 1:59 am
Forum: The Bridge: Discuss an Astronomy Picture of the Day
Topic: APOD: Comet Leonard behind JWST Launch Plume (2021 Dec 27)
Replies: 48
Views: 20588

Re: APOD: Comet Leonard behind JWST Launch Plume (2021 Dec 27)

Pon, nice response to the questions. I was similarly puzzled about what we're looking at in your image. I also was thrown by the listed facebook time (7:12pm, 8 min before launch :). I had your location, and the sky field looked right, and the comet was the key to nailing down the day (Dec 25). I d...
by Pon
Mon Dec 27, 2021 11:29 pm
Forum: The Bridge: Discuss an Astronomy Picture of the Day
Topic: APOD: Comet Leonard behind JWST Launch Plume (2021 Dec 27)
Replies: 48
Views: 20588

Re: APOD: Comet Leonard behind JWST Launch Plume (2021 Dec 27)

I've attached some photos of the images that were also shot that night. Here are some close up of the (spent) upper stage rocket and its plume. The plume is probably lit by sunlight but you can also see the glowing heat from the rocket engine as it spiraled out of control. _DSC1196.jpg _DSC1233.jpg ...
by Pon
Mon Dec 27, 2021 11:23 pm
Forum: The Bridge: Discuss an Astronomy Picture of the Day
Topic: APOD: Comet Leonard behind JWST Launch Plume (2021 Dec 27)
Replies: 48
Views: 20588

Re: APOD: Comet Leonard behind JWST Launch Plume (2021 Dec 27)

Hi, the original photographer here. Allow me to explain some of the issues that have been raised. The image was shot exactly at 12:57 UTC from Chiang Mai, Thailand. The coordinate is (if anybody's asking): 18.55387688510697, 98.48196698124625 Yes, this is a single shot. Barely any processing was don...
by Pon
Fri Feb 07, 2020 3:08 am
Forum: The Bridge: Discuss an Astronomy Picture of the Day
Topic: APOD: Lunar Eclipse Perspectives (2020 Feb 05)
Replies: 23
Views: 21686

Re: APOD: Lunar Eclipse Perspectives (2020 Feb 05)

I was surprised that an article titled "perspectives" do not show any from the equator or below. The perspective from Peru or Buenos Aires is totally different for a reason not discussed. I do wonder if anyone below the equator captured the strike. Tracy Kolenchuk In the image I ignored t...
by Pon
Thu Feb 06, 2020 11:53 pm
Forum: The Bridge: Discuss an Astronomy Picture of the Day
Topic: APOD: Lunar Eclipse Perspectives (2020 Feb 05)
Replies: 23
Views: 21686

Re: APOD: Lunar Eclipse Perspectives (2020 Feb 05)

A bonus note to point out: If you trace all the moon images as they appear against the background stars, they happen to trace out a rough geographical map of the Earth as seen from the Moon during the impact! (Albeit the map would be inverted) Yes...the map would be inverted top to bottom ... but n...
by Pon
Thu Feb 06, 2020 4:16 pm
Forum: The Bridge: Discuss an Astronomy Picture of the Day
Topic: APOD: Lunar Eclipse Perspectives (2020 Feb 05)
Replies: 23
Views: 21686

Re: APOD: Lunar Eclipse Perspectives (2020 Feb 05)

A bonus note to point out: If you trace all the moon images as they appear against the background stars, they happen to trace out a rough geographical map of the Earth as seen from the Moon during the impact! (Albeit the map would be inverted)
Screen Shot 2020-02-06 at 11.22.40 PM.png
by Pon
Thu Feb 06, 2020 4:12 pm
Forum: The Bridge: Discuss an Astronomy Picture of the Day
Topic: APOD: Lunar Eclipse Perspectives (2020 Feb 05)
Replies: 23
Views: 21686

Re: APOD: Lunar Eclipse Perspectives (2020 Feb 05)

Hi, I'm the person who composed the image and the text. There seems to be a few questions regarding the post, allow me to try to explain some of them. Simultaneity: - All these images were taken with different exposure time, so it was impossible to perfectly line up all the shots. However, as the im...
by Pon
Thu May 22, 2014 3:26 pm
Forum: Starship Asterisk: Handbook
Topic: Feedback: APOD's online image submission system
Replies: 6
Views: 20298

Re: Feedback: APOD's online image submission system

It appears as if it points to incorrect link. The proper link to the new submission page should be http://apod.com/submit/upload.php .

If you're having problem uploading to the new submission system, please use the URL posted here.

Sorry for the confusion.
by Pon
Wed Feb 12, 2014 7:10 am
Forum: The Bridge: Discuss an Astronomy Picture of the Day
Topic: APOD: Rocket, Meteor, and Milky Way over... (2014 Feb 12)
Replies: 22
Views: 5952

Re: APOD: Rocket, Meteor, and Milky Way over... (2014 Feb 12

Ariane? You can't convince me that's not a comet. French Guiana is 12,000 miles from Thailand. It really does look like a comet, especially with naked eyes. However, a comet wouldn't have streaked this fast in the span of few minutes: _DSC3312_3316.jpg Nor would it look like this up close: _DSC3320...