Luminous Landscape Forum

Raw & Post Processing, Printing => Digital Image Processing => Topic started by: Redcrown on September 15, 2024, 06:11:03 pm

Title: Himawari satellite - earth and moon image.
Post by: Redcrown on September 15, 2024, 06:11:03 pm

A friend posted this amazing earth image on Facebook. I commented wondering what kind of lens gave that perspective. He sent links with enough data and specs on that satellite to choke a horse. But I could not find anything about the lenses, if it even has traditional lenses. Anybody know how this was done?

https://www.facebook.com/photo?fbid=1555387225051115&set=gm.433440236414053&idorvanity=367552686336142

Title: Re: Himawari satellite - earth and moon image.
Post by: Frans Waterlander on September 16, 2024, 12:36:48 am

To me it looks like a regular shot from a satelite or spacestation, nothing more, nothing less.

Title: Re: Himawari satellite - earth and moon image.
Post by: Adam Schallau on September 16, 2024, 02:26:14 pm

It's a composite. The moon isn't that close to Earth.

Title: Re: Himawari satellite - earth and moon image.
Post by: Redcrown on September 16, 2024, 11:57:39 pm

Everything the web has about the Himawari satellite covers the megapixels, the scan rates, the transmission speeds, etc., but nothing about the lenses and focal length. Sure, there are a lot of fake composite moon images. But here is a verified real shot, taken at 555mm.

https://blog.sigmaphoto.com/wp-content/uploads/2019/10/mike-carroll-3.jpg

Title: Re: Himawari satellite - earth and moon image.
Post by: Frans Waterlander on September 17, 2024, 11:54:22 am

"To me it looks like a regular shot from a satelite or spacestation, nothing more, nothing less."

Title: Re: Himawari satellite - earth and moon image.
Post by: Peano on September 18, 2024, 11:16:41 am

Quote from: Adam Schallau on September 16, 2024, 02:26:14 pm

The moon isn't that close to Earth.

Wouldn't you need to know the focal length before drawing that conclusion?

Title: Re: Himawari satellite - earth and moon image.
Post by: Peano on September 18, 2024, 11:33:58 am

This appears to be approximately a three-quarter moon. The white circle circumscribes the disk of the moon. Question: How could stars be visible in the area indicated? Wouldn't the moon (in shadow) block visibility of the stars beyond?

Possible answers: 1) The moon was added (composited) in post, or 2) the stars were added in post.

 

Title: Re: Himawari satellite - earth and moon image.
Post by: mcbroomf on September 18, 2024, 11:43:56 am

Well spotted!

Option 3) these are lights from cities on the Dark Side Of The Moon ...  :)

Title: Re: Himawari satellite - earth and moon image.
Post by: Redcrown on September 19, 2024, 11:12:04 am

Thanks, Peano. I think you are on to something. I found it hard to believe that a satellite would have a 400mm to 600mm lens.

Also, the Facebook account of the original poster looks fake too.

Title: Re: Himawari satellite - earth and moon image.
Post by: degrub on September 19, 2024, 11:15:50 am

then there is Hubble
and the NSA versions pointed the other direction  ;)