[Idea] RAW Video: astronomy usage

[JCBEos]

Hi guys

just got an idea about RAW shooting

in the planetary picture acquisition process, one of the main thing is to have lots of FPS in order to get rid of the "bad pictures" distorted by the atmospheric turbulence.

so maybe it would be nice to try on the moon to start, in order to see what it's possible to get

the power of RAW must be useful, btw it will not change the captor capabilities...

I aint go no time right now to test it with my telescope, maybe someone right here can do it?

[g3gg0]

that the reason why i added some special features to mlv_dump.

you can average a bunch of frames and subtract the result from your footage.
so make a dark video (cap on), average it and subtract the resulting single frame
from your video you made of the moon.

[JCBEos]

ok so i'm not that dumb to had this idea 

I'll try this when I'll get some time!

is there any thread a bout this?

tks g3gg0

[g3gg0]

there is nothing documented yet.
one has to try if it is useful or not.

[RenatoPhoto]

there is nothing documented yet.
one has to try if it is useful or not.

You have documented the use of mlv_dump in first post here:
http://www.magiclantern.fm/forum/index.php?topic=7122.0

-r                  output into a legacy raw file for e.g. raw2dng
-o output_file      set the filename to write into
-v                  verbose output

-b bits             convert image data to given bit depth per channel (1-16)
-z bits             zero the lowest bits, so we have only specified number of bits containing data (1-16) (improves compression rate)
-f frames           stop after that number of frames

-x                  build xref file (indexing, needed for faster processing and improved encoding)

-m                  write only metadata, no audio or video frames
-n                  write no metadata, only audio and video frames

-a                  average all frames in <inputfile> and output a single-frame MLV from it
-s mlv_file         subtract the reference frame in given file from every single frame during processing

-e                  delta-encode frames to improve compression, but lose random access capabilities (requires xref file)

-c                  (re-)compress video and audio frames using LZMA (set bpp to 16 to improve compression rate)
-d                  decompress compressed video and audio frames using LZMA
-l level            set compression level from 0=fastest to 9=best compression

[JCBEos]

tks!

and is there anywhere a tutorial to find some time or a babysiter (free ) ?