HELP in Bulk Astrometry

[J C]

I am trying to upload multiple images to astrometry.net to determine RA and Dec of my images. However, I cannot submit multiple at once and download all the new image fits. Does anyone have any recommendations for this?

[J C]

I have tried to upload as a compressed TAR and a GZ (and both) and it has not worked! The file is too big. 

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From: astro...@googlegroups.com <astro...@googlegroups.com> on behalf of J C <jmc...@gmail.com>
Sent: Tuesday, April 18, 2023 8:54:08 PM
To: astrometry <astro...@googlegroups.com>
Subject: [Astrometry] HELP in Bulk Astrometry

 

I am trying to upload multiple images to astrometry.net to determine RA and Dec of my images. However, I cannot submit multiple at once and download all the new image fits. Does anyone have any recommendations for this?

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[Dustin Lang]

Is using the API client an option for you?

https://github.com/dstndstn/astrometry.net/tree/main/net/client

client.py is a stand-alone script that lets you upload an image, wait for the result (-w) and download the new-image.fits (--newfits=filename.fits).

cheers,

dustin

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[J C]

I dont know how Im afraid! Im a undergraduate and this is my first time using it!

[Dustin Lang]

How big are the individual images?

How many do you have to process?

You said "the file is too big" but what do you mean by that -- did the web service complain about the file? Or did it time out? Or what...?

cheers,

dustin

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[J C]

 50 images, each 65,000kb. If I put them all on a .tar.gz, it ends up being 2.4GB. It says Service Unavailable. 

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From: Dustin Lang <dstn...@gmail.com>
Sent: Tuesday, April 18, 2023 9:27:56 PM
To: J C <jmc...@gmail.com>
Cc: astrometry <astro...@googlegroups.com>
Subject: Re: [Astrometry] HELP in Bulk Astrometry

 

[Dustin Lang]

Can you try 10 at once?

[J C]

Yes, it still does not work. 

[Dustin Lang]

Thanks for checking.  I'll investigate and see if I can see what's going wrong on the server side.

Meanwhile, you should perhaps consider the client.py route.  Do you have a unix machine (linux, mac, or windows with linux subsystem)?  With python installed?  And where you can "cd" to the directory containing your images?  If so, you would then find out your API key (log in, then look on https://nova.astrometry.net/api_help), and then run something like

    python client.py -k YOUR_APIKEY -u IMAGE1.fits --newfits NEW1.fits

on each image.  (It's easy to loop over multiple images using a bash "for" loop -- happy to show you how if you get to that.)

cheers,

dustin

To view this discussion on the web visit https://groups.google.com/d/msgid/astrometry/10d5a1b7-30e4-4aac-9422-23dc4c55caf0n%40googlegroups.com.

[Dustin Lang]

(Because I forget exactly what happens when you upload a TAR.GZ, but I don't think there's a super easy way to download all the resulting new-image.fits files, without clicking through each of the 50 results pages!)

[J C]

Im now trying the API with Boomerang on Chrome and trying to use a regular .TAR, but I'm struggling!! Any suggestions?

[Dustin Lang]

Hi,

I really don't think you want to be trying to make the REST requests yourself -- use the Python client.py program!

cheers,

dustin

[J C]

So I just open it in python and try running it? I tried doing that on Jupyter Notebook and it didn’t work!

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From: Dustin Lang <dstn...@gmail.com>
Sent: Wednesday, April 19, 2023 12:53:43 PM

[Dustin Lang]

The easiest way is probably to put that client.py script in the same directory as your image files, then open a Terminal, and go into that directory (using "cd" + the directory name if you're using Mac or Linux) and run

python client.py -k YOUR_API_KEY -u IMAGE1.fits --newfits NEW1.fits

Alternatively, you could try using the attached notebook (you still need the client.py script to be in the same directory) in Jupyter.

[J C]

This is super helpful! Thank you so much. Do I put the name of the .tar file in place of “IMAGE1.fits”?

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From: Dustin Lang <dstn...@gmail.com>
Sent: Wednesday, April 19, 2023 1:21:31 PM

[Dustin Lang]

Don't try to upload the tar, just do single images at a time.

[J C]

IT WORKED‼️‼️‼️ thank you dustin you’re the BEST!!! 

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From: Dustin Lang <dstn...@gmail.com>
Sent: Wednesday, April 19, 2023 1:41:09 PM