Starship Asterisk*

Chris Peterson wrote: ↑Tue Dec 07, 2021 2:18 pm

johnnydeep wrote: ↑Tue Dec 07, 2021 2:11 pm

Chris Peterson wrote: ↑Mon Dec 06, 2021 11:17 pm
Presumably to take advantage of lucky imaging algorithms to get a very high resolution ISS image.

"Lucky"? So, was the ISS really transiting the moon in the position shown here, and just the ISS was "enhanced" using frames from the video? Or is this pic composed solely from the frames of the video? Still not clear to me, but I guess it doesn't really matter...

I don't know. If I were taking it with similar equipment, I'd build the ISS image out of the video sequence, and then overlay it on one of the single frames. That would make it a perfectly accurate representation of the event but with a higher resolution ISS image than is possible in a single frame. A perfectly reasonable technique, IMO.

johnnydeep wrote: ↑Tue Dec 07, 2021 2:11 pm

Chris Peterson wrote: ↑Mon Dec 06, 2021 11:17 pm

johnnydeep wrote: ↑Mon Dec 06, 2021 9:53 pm

I'm not understanding the image composition method here. Was a separate image of the gibbous moon - sans ISS - combined with some frames from that video that does show the ISS? If so, I fail to see the purpose.

Presumably to take advantage of lucky imaging algorithms to get a very high resolution ISS image.

"Lucky"? So, was the ISS really transiting the moon in the position shown here, and just the ISS was "enhanced" using frames from the video? Or is this pic composed solely from the frames of the video? Still not clear to me, but I guess it doesn't really matter...

Chris Peterson wrote: ↑Mon Dec 06, 2021 11:17 pm

johnnydeep wrote: ↑Mon Dec 06, 2021 9:53 pm

APOD Robot wrote: ↑Mon Dec 06, 2021 5:05 am Space Station Silhouette on the Moon

Explanation: What's that unusual spot on the Moon? It's the International Space Station. Using precise timing, the Earth-orbiting space platform was photographed in front of a partially lit gibbous Moon last month. The featured composite, taken from Payson, Arizona, USA last month, was intricately composed by combining, in part, many 1/2000-second images from a video of the ISS crossing the Moon. A close inspection of this unusually crisp ISS silhouette will reveal the outlines of numerous solar panels and trusses. The bright crater Tycho is visible on the upper left, as well as comparatively rough, light colored terrain known as highlands, and relatively smooth, dark colored areas known as maria. On-line tools can tell you when the International Space Station will be visible from your area.

I'm not understanding the image composition method here. Was a separate image of the gibbous moon - sans ISS - combined with some frames from that video that does show the ISS? If so, I fail to see the purpose.

Presumably to take advantage of lucky imaging algorithms to get a very high resolution ISS image.

johnnydeep wrote: ↑Mon Dec 06, 2021 9:53 pm

APOD Robot wrote: ↑Mon Dec 06, 2021 5:05 am Space Station Silhouette on the Moon

Explanation: What's that unusual spot on the Moon? It's the International Space Station. Using precise timing, the Earth-orbiting space platform was photographed in front of a partially lit gibbous Moon last month. The featured composite, taken from Payson, Arizona, USA last month, was intricately composed by combining, in part, many 1/2000-second images from a video of the ISS crossing the Moon. A close inspection of this unusually crisp ISS silhouette will reveal the outlines of numerous solar panels and trusses. The bright crater Tycho is visible on the upper left, as well as comparatively rough, light colored terrain known as highlands, and relatively smooth, dark colored areas known as maria. On-line tools can tell you when the International Space Station will be visible from your area.

I'm not understanding the image composition method here. Was a separate image of the gibbous moon - sans ISS - combined with some frames from that video that does show the ISS? If so, I fail to see the purpose.

johnnydeep wrote: ↑Mon Dec 06, 2021 9:53 pm

APOD Robot wrote: ↑Mon Dec 06, 2021 5:05 am Space Station Silhouette on the Moon

Explanation: What's that unusual spot on the Moon? It's the International Space Station. Using precise timing, the Earth-orbiting space platform was photographed in front of a partially lit gibbous Moon last month. The featured composite, taken from Payson, Arizona, USA last month, was intricately composed by combining, in part, many 1/2000-second images from a video of the ISS crossing the Moon. A close inspection of this unusually crisp ISS silhouette will reveal the outlines of numerous solar panels and trusses. The bright crater Tycho is visible on the upper left, as well as comparatively rough, light colored terrain known as highlands, and relatively smooth, dark colored areas known as maria. On-line tools can tell you when the International Space Station will be visible from your area.

I'm not understanding the image composition method here. Was a separate image of the gibbous moon - sans ISS - combined with some frames from that video that does show the ISS? If so, I fail to see the purpose.

APOD Robot wrote: ↑Mon Dec 06, 2021 5:05 am Space Station Silhouette on the Moon

Explanation: What's that unusual spot on the Moon? It's the International Space Station. Using precise timing, the Earth-orbiting space platform was photographed in front of a partially lit gibbous Moon last month. The featured composite, taken from Payson, Arizona, USA last month, was intricately composed by combining, in part, many 1/2000-second images from a video of the ISS crossing the Moon. A close inspection of this unusually crisp ISS silhouette will reveal the outlines of numerous solar panels and trusses. The bright crater Tycho is visible on the upper left, as well as comparatively rough, light colored terrain known as highlands, and relatively smooth, dark colored areas known as maria. On-line tools can tell you when the International Space Station will be visible from your area.

neufer wrote: ↑Mon Dec 06, 2021 3:29 pm

JohnD wrote: ↑Mon Dec 06, 2021 3:09 pm

Chris Peterson wrote: ↑Mon Dec 06, 2021 2:52 pm
The "little fable" of the ISS as Santa's sleigh pales in comparison with the huge fable of Santa!

Oh, come on, Chris! It must be true, NORAD tracks him every Christmas!
And how do those presents arrive otherwise?

https://en.wikipedia.org/wiki/Santa_Claus#Tracking_Santa_Claus wrote:

Click to play embedded YouTube video.

<<The origins of the NORAD Tracks Santa programme began in the United States in 1955, when a Sears Roebuck store in Colorado Springs, Colorado, gave children a number to call a "Santa hotline". The number was mistyped, resulting in children calling the Continental Air Defense Command (CONAD) on Christmas Eve instead. The Director of Operations, Colonel Harry Shoup, received the first call for Santa and responded by claiming to children that there were signs on the radar that Santa was indeed heading south from the North Pole. In addition to providing holiday-themed entertainment, "Santa tracking" websites raise interest in space technology and exploration, serve to educate children in geography and encourage them to take an interest in science.>>

JohnD wrote: ↑Mon Dec 06, 2021 3:09 pm

Chris Peterson wrote: ↑Mon Dec 06, 2021 2:52 pm
The "little fable" of the ISS as Santa's sleigh pales in comparison with the huge fable of Santa!

Oh, come on, Chris! It must be true, NORAD tracks him every Christmas!
And how do those presents arrive otherwise?

https://en.wikipedia.org/wiki/Santa_Claus#Tracking_Santa_Claus wrote:

Click to play embedded YouTube video.

<<The origins of the NORAD Tracks Santa programme began in the United States in 1955, when a Sears Roebuck store in Colorado Springs, Colorado, gave children a number to call a "Santa hotline". The number was mistyped, resulting in children calling the Continental Air Defense Command (CONAD) on Christmas Eve instead. The Director of Operations, Colonel Harry Shoup, received the first call for Santa and responded by claiming to children that there were signs on the radar that Santa was indeed heading south from the North Pole. In addition to providing holiday-themed entertainment, "Santa tracking" websites raise interest in space technology and exploration, serve to educate children in geography and encourage them to take an interest in science.>>

JohnD wrote: ↑Mon Dec 06, 2021 3:09 pm Oh, come on, Chris! It must be true, NORAD tracks him every Christmas!
And how do those presents arrive otherwise?

Don't listen, kids, that old killjoy will have you believe next that the Tooth Fairy is in league with Colgate!

JohnD wrote: ↑Mon Dec 06, 2021 11:51 am Four years ago, when Grandson No.1 was old enough to be shown a sky object and young enough not to be sceptical, we showed him the ISS flying overhead on Christmas Eve, as Santa's Sleigh. I hope that after my criticism of the use of "Blood Moon" I may be forgiven a harmless little fable in favour of childhood wonder?

JohnD wrote: ↑Mon Dec 06, 2021 11:51 am

Four years ago, when Grandson No.1 was old enough to be shown a sky object and young enough not to be sceptical, we showed him the ISS flying overhead on Christmas Eve, as Santa's Sleigh. He now has a brother of that age, and so I clicked on the link above to find when the ISS might be visible, this Christmas. The link doesn't work! Try https://spotthestation.nasa.gov/ and you get straight to it. Happy Observations of Santa's Sleigh, everyone!