Solve images

[Gaetano Zarcone]

Hi,

I have a question: does astrometry.net and the local version solve only physical images? 

I will try to explain the problem better. As mentioned in a previous discussion (https://groups.google.com/d/msgid/astrometry/CAGm%2BbRWCb9VGp8t%3DKC%3DTYqev%3DVRjntj9_%3DCw5p0fBPGAAcC1ug%40mail.gmail.com.) I'm working on raw images (.cr2 file) and to solve them I have to convert in a supported file format (e.g. png). This is ok, but it requires a lot of time (hours for hundreds images). My question is: if I get out the x,y coordinates of the stars directly from the raw images, and then I write them in a txt file, can I give this txt file to astrometry in order to solve the images?

Cheers

GZ

[Dustin Lang]

Hi,

Yes, you can submit lists of X,Y coordinates of stars.  Sort them by brightness (brightest first).  The easiest format will probably be text -- x,y coordinates, one per line, separated with either a space or comma.

cheers,

dustin

 

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[Gaetano Zarcone]

Ok

If I understood correctly the txt file should be something like this:

x1,y1

x2,y2

x3,y3

...

xn,yn

Now there is only one problem: how can I give  this txt file to the local version of astrometry?😅

Cheers

Gaetano

[Dustin Lang]

Hi,

There's a "text2fits" program you can use to generate "xylist" inputs for solve-field, eg, with a file like you describe, you could go

text2fits -f ff -s, -H "x,y" input.txt input.xy

and then run solve-field on your input.xy file.

cheers,

dustin

[Gaetano Zarcone]

Ok

Thanks Dustin

I'll try it

Cheers

Gaetano