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Welcome! Please ask your questions and post your experiences about Astrometry.net:

- the Astrometry.net web service (https://nova.astrometry.net)
- the command-line code (https://astrometry.net/downloads/)
- the Flickr group Astrometry (https://www.flickr.com/groups/astrometry/)

When reporting a bug, please include the URL to your web submission, or an example image showing the problem. This makes it much easier to track down.

The group is (temporarily, I hope) set so that you have to ask permission to join & post, because we've had a bunch of spam postings. All real humans are accepted!

thanks,
dustin

0 selected

Dustin Lang, … Thibault Notargiacomo8

1/11/18

Astrometry.net code now on Github!

Thank you very much for this work ! Le lundi 23 juin 2014 16:23:38 UTC+2, Dustin Lang a écrit : Hi, I

unread,

Astrometry.net code now on Github!

Thank you very much for this work ! Le lundi 23 juin 2014 16:23:38 UTC+2, Dustin Lang a écrit : Hi, I

1/11/18

Geoff McHarg, Dustin Lang2

9:36 PM

Should images with earth in field of view solve?

Hi, It depends a bit on the details -- if the source detection algorithm finds a lot of fake "

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Should images with earth in field of view solve?

Hi, It depends a bit on the details -- if the source detection algorithm finds a lot of fake "

9:36 PM

Frans van Muijen, Dustin Lang5

2:59 PM

Site seems down?

Marvelous! Up and running again!👍🏻👌🏻✨ Met vriendelijke groet, Frans van Muijen 🌐🌍💫🌏💫🌎🌐 Op ma 12 mei

unread,

Site seems down?

Marvelous! Up and running again!👍🏻👌🏻✨ Met vriendelijke groet, Frans van Muijen 🌐🌍💫🌏💫🌎🌐 Op ma 12 mei

2:59 PM

Katie Breeland-Newcomb, Dustin Lang2

Apr 16

Can I specify what catalogue I want used for astrometry.net solution?

Hi, There isn't an easy way to force it to use, say, only the Gaia catalogs - any index files

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Can I specify what catalogue I want used for astrometry.net solution?

Hi, There isn't an easy way to force it to use, say, only the Gaia catalogs - any index files

Apr 16

yian...@gmail.com, Dustin Lang2

Apr 16

about Astrometry.net index

Hi, I don't know, but that is a good guess - the 4100-series are the only recent ones built from

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about Astrometry.net index

Hi, I don't know, but that is a good guess - the 4100-series are the only recent ones built from

Apr 16

Abdullah Qureshi, Dustin Lang6

Apr 8

Thanks it works now. I have also made a script to automatically download into the folder if

unread,

Thanks it works now. I have also made a script to automatically download into the folder if

Apr 8

Donald Samuels, Dustin Lang4

Apr 7

Field of View question

Hi, If you plug in 22.3 mm and 5.13 deg, that's 249 mm: https://www.wolframalpha.com/input?i=22.3

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Field of View question

Hi, If you plug in 22.3 mm and 5.13 deg, that's 249 mm: https://www.wolframalpha.com/input?i=22.3

Apr 7

Paul Evangelopoulos, Dustin Lang5

Apr 7

error: (403) Forbidden.

It seems that the image is solved but I am receiving an exception together with 403 error for some

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error: (403) Forbidden.

It seems that the image is solved but I am receiving an exception together with 403 error for some

Apr 7

Εμμανουήλ Φωκίτης, … Bruce Sobut7

Apr 5

500 Internal Server Error

That did it! Needed that to verify I had imaged the new nova V7993 SGR @ RA18h 02m 21.6 Dec -33 10

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500 Internal Server Error

That did it! Needed that to verify I had imaged the new nova V7993 SGR @ RA18h 02m 21.6 Dec -33 10

Apr 5

alb...@googlemail.com, Dustin Lang5

Apr 2

ID of SkyPlotZoom2 image

OK, perfect, I think I just mixed the ID's in my first try, now it works perfect for me :-) dstn.

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ID of SkyPlotZoom2 image

OK, perfect, I think I just mixed the ID's in my first try, now it works perfect for me :-) dstn.

Apr 2

Stan, Dustin Lang4

Mar 29

Error saving image-radec.fits

Will work on this.. this weekend.. thank you for fixing the bug!! Great service.. sir On Fri, Mar 14,

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Error saving image-radec.fits

Will work on this.. this weekend.. thank you for fixing the bug!! Great service.. sir On Fri, Mar 14,

Mar 29

Jakub Lipiński, Dustin Lang3

Mar 29

Astrometry on healpix boundaries

I believe it's about 2x1.5 degrees. It was solved using 5204-10 index file. piątek, 28 marca 2025

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Astrometry on healpix boundaries

I believe it's about 2x1.5 degrees. It was solved using 5204-10 index file. piątek, 28 marca 2025

Mar 29

Andreas Faisst, Dustin Lang7

Mar 28

Question regarding quads fitting that doesn't converge

Great! On Fri, Mar 28, 2025, 8:17 pm Andreas Faisst <anfa...@gmail.com> wrote: I was able to

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Question regarding quads fitting that doesn't converge

Great! On Fri, Mar 28, 2025, 8:17 pm Andreas Faisst <anfa...@gmail.com> wrote: I was able to

Mar 28

Abdullah Qureshi, Dustin Lang2

Mar 19

Identified Star Coordinates?

Hi, xyls are stars detected in your image (without looking at the sky) rdls are stars from the

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Identified Star Coordinates?

Hi, xyls are stars detected in your image (without looking at the sky) rdls are stars from the

Mar 19

Camilo Ortiz, Dustin Lang2

Mar 19

plot-constellation color change

Hi, The plotting is a bit of a mess - there's plot-constellations but also plotann.py, which has

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plot-constellation color change

Hi, The plotting is a bit of a mess - there's plot-constellations but also plotann.py, which has

Mar 19

Mar 9

command options

您好，我有一个问题。获取星空图像的命令选项有哪些，在哪里可以找到它们？

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command options

您好，我有一个问题。获取星空图像的命令选项有哪些，在哪里可以找到它们？

Mar 9

Ashish Kumar Mandal, Dustin Lang2

Mar 5

Incomplete outputs while solving field using astrometry

Hi, Where did you get these index files from? They do not look right -- see the complaints like:

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Incomplete outputs while solving field using astrometry

Hi, Where did you get these index files from? They do not look right -- see the complaints like:

Mar 5

Εμμανουήλ Φωκίτης, Dustin Lang2

Mar 1

Backlog in astrometry net submissions?

Hello, It looks like the backlog has cleared - thanks for your note. cheers, dustin On Fri, Feb 28,

unread,

Backlog in astrometry net submissions?

Hello, It looks like the backlog has cleared - thanks for your note. cheers, dustin On Fri, Feb 28,

Mar 1

Jose Miguel Ibáñez, Dustin Lang4

Feb 24

Sure, that would be a fair comparison. On Mon, Feb 24, 2025 at 11:10 AM Jose Miguel Ibáñez <ppmime

unread,

Sure, that would be a fair comparison. On Mon, Feb 24, 2025 at 11:10 AM Jose Miguel Ibáñez <ppmime

Feb 24

Jakub Galczynski, Dustin Lang3

Feb 21

New Here. What am I doing Wrong?

Dustin Thank you so much for the time and help. The outcome is very exciting and will encourage me to

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New Here. What am I doing Wrong?

Dustin Thank you so much for the time and help. The outcome is very exciting and will encourage me to

Feb 21

Feb 21

Re: [Astrometry] index files

Hi, Basically, you want the properties of the star catalog to match the images you're going to be

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Re: [Astrometry] index files

Hi, Basically, you want the properties of the star catalog to match the images you're going to be

Feb 21

Dustin Lang, Dan Clemens3

Feb 18

Re: [Astrometry] URL uploads

Oh yes, right, I didn't spot the "request-json" part - glad you got it sorted out, and

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Re: [Astrometry] URL uploads

Oh yes, right, I didn't spot the "request-json" part - glad you got it sorted out, and

Feb 18

Sean Jao, Dustin Lang8

Feb 11

a question to a build index file

Oh wait, I think I see it.... You have "build-astrometry-index -s phot_g_mean_mag" it

unread,

a question to a build index file

Oh wait, I think I see it.... You have "build-astrometry-index -s phot_g_mean_mag" it

Feb 11

Geoff McHarg, Dustin Lang2

Feb 10

Visual magnitudes?

Hi, Would you mind sending a link to the solved image? We do have mags in different bands handy for

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Visual magnitudes?

Hi, Would you mind sending a link to the solved image? We do have mags in different bands handy for

Feb 10

Dong Yun Jung, Dustin Lang7

Feb 3

Solve-field works on Website but Fails Locally

Hello, After decompressing by using funpack, it works!! Thanks a lot!! 2025년 2월 3일 월요일 오전 5시 3분 32초

unread,

Solve-field works on Website but Fails Locally

Hello, After decompressing by using funpack, it works!! Thanks a lot!! 2025년 2월 3일 월요일 오전 5시 3분 32초

Feb 3

Ivan Venzor, … Dustin Lang8

Feb 2

Are there currently performance issues?

Thank you! On Sunday, February 2, 2025 at 6:07:05 PM UTC-6 dstn...@gmail.com wrote: Should be better

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Are there currently performance issues?

Thank you! On Sunday, February 2, 2025 at 6:07:05 PM UTC-6 dstn...@gmail.com wrote: Should be better

Feb 2

Samuel Grund, Dustin Lang4

Feb 1

Unable to solve small fields

Hi, 2.85 arcmin is pretty small - the 5201 index files (scale 01) contain quadrangles of stars with

unread,

Unable to solve small fields

Hi, 2.85 arcmin is pretty small - the 5201 index files (scale 01) contain quadrangles of stars with

Feb 1

Stan, Dustin Lang8

Feb 1

Option to increase --objs parameters

That's fantastic! Glad to hear it! Good luck with the rest of your project! On Sat, Feb 1, 2025

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Option to increase --objs parameters

That's fantastic! Glad to hear it! Good luck with the rest of your project! On Sat, Feb 1, 2025

Feb 1

Christopher Sandor, Dustin Lang6

Jan 31

Problem Installing Astronomy.net on Mac

Thanks Dustin. I switched over to my phone hotspot and it is installing without a problem. Thanks for

unread,

Problem Installing Astronomy.net on Mac

Thanks Dustin. I switched over to my phone hotspot and it is installing without a problem. Thanks for

Jan 31

Davide Abriola, Dustin Lang2

Jan 31

Cannot solve field of galaxy cluster

Hi, This is a super narrow field - only a couple of arcminutes wide - so the web version definitely

unread,

Cannot solve field of galaxy cluster

Hi, This is a super narrow field - only a couple of arcminutes wide - so the web version definitely

Jan 31

Dong Yun Jung, Dustin Lang3

Jan 30

Index file download

Actually it looks like it is back alive now! On Thu, Jan 30, 2025 at 9:49 AM Dustin Lang <dstndstn

unread,

Index file download

Actually it looks like it is back alive now! On Thu, Jan 30, 2025 at 9:49 AM Dustin Lang <dstndstn

Jan 30

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