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  Star trails: Composite photography from ISS

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Author Topic:   Star trails: Composite photography from ISS
Robert Pearlman
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Posts: 27327
From: Houston, TX
Registered: Nov 1999

posted 05-17-2012 09:10 AM     Click Here to See the Profile for Robert Pearlman   Click Here to Email Robert Pearlman     Edit/Delete Message   Reply w/Quote
These are composites of a series of images photographed from a mounted camera on the International Space Station, from approximately 240 miles above Earth.

Expedition 31 flight engineer Don Pettit shared the photographic techniques used to achieve the images:

My star trail images are made by taking a time exposure of about 10 to 15 minutes. However, with modern digital cameras, 30 seconds is about the longest exposure possible, due to electronic detector noise effectively snowing out the image.

To achieve the longer exposures I do what many amateur astronomers do. I take multiple 30-second exposures, then 'stack' them using imaging software, thus producing the longer exposure.

A total of 18 images photographed by the astronaut-monitored stationary camera were combined to create this composite:

A total of 46 images photographed by the astronaut-monitored stationary camera in the Cupola were combined to create this composite:

A total of 47 images photographed by the astronaut-monitored stationary camera were combined to create this composite:

Jurg Bolli
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Posts: 520
From: Albuquerque, NM
Registered: Nov 2000

posted 05-17-2012 05:50 PM     Click Here to See the Profile for Jurg Bolli   Click Here to Email Jurg Bolli     Edit/Delete Message   Reply w/Quote
These are fascinating. But I prefer regular images that show us what it looks like up there.

mikepf
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Posts: 351
From: San Jose, California, USA
Registered: Mar 2002

posted 05-17-2012 06:24 PM     Click Here to See the Profile for mikepf   Click Here to Email mikepf     Edit/Delete Message   Reply w/Quote
It looks like they've engaged the warp drive.

RocketmanRob
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Posts: 254
From: New York City USA
Registered: Mar 2005

posted 05-19-2012 07:01 PM     Click Here to See the Profile for RocketmanRob   Click Here to Email RocketmanRob     Edit/Delete Message   Reply w/Quote
This reminds me of some fantastic video footage that Ron Garan showed at a recent gathering at the Cradle of Aviation museum. It showed time lapsed video of the Earth from ISS to the theme of the most recent Star Trek movie. Worth a look if you can find it. Unfortunately, I haven't been able to find it.

328KF
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Posts: 829
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Registered: Apr 2008

posted 05-19-2012 10:01 PM     Click Here to See the Profile for 328KF   Click Here to Email 328KF     Edit/Delete Message   Reply w/Quote
Here's a link to that video.

RocketmanRob
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Posts: 254
From: New York City USA
Registered: Mar 2005

posted 05-20-2012 09:25 PM     Click Here to See the Profile for RocketmanRob   Click Here to Email RocketmanRob     Edit/Delete Message   Reply w/Quote
That's it. Thanks for the link!

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