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VPhot System & AAVSONet Back on Track - 2 May 2012

We recently released a significant update to the backend systems for the AAVSO website. While most of the bugs introduced by this update have been fixed, there may still be problems we haven't fixed. If you run into a problem, please email webmaster@aavso.org
kqr's picture
kqr
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Joined: 2010-03-12

Folks:


Disk issues with VPhot have been alleviated and I have gotten caught up with all telescope processing with AAVSONet. Today's processing (the 2nd) occurred under automatic direction.

We're back where we should be!
--
Richard "Doc" Kinne, [KQR]
Astronomical Technologist
American Association of Variable Star Observers
1911-2011: A Steady Century Monitoring Variable Stars!

problems
Gustav Holmberg's picture
Gustav Holmberg
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I am experiencing problems using Vphot since the weekend's system maintenance. Sometimes Vphot can't be accessed and the message "Bad Request: Request Header Too Long" shows upon logging in. Sometimes I can log on and the image loads but when analysis starts, variables aren't identified and a small window opens with an error messages, for example "http://184.73.185.143 Authentication failed." Sometimes, everything works. Strange.

Has anyone else noticed this?

/Gustav Holmberg, HGUA

Problem
MZK's picture
MZK
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Joined: 2010-07-23

YES!  Weird is the word I used.

Geir is aware of it.   ;-(

Problems
kge's picture
kge
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Joined: 2010-07-19

Hi Gustav,

That is strange. No, I have not heard of it before, and I can not see similar error messages on the server, implying it is realted to your browser somehow.

How often does these problems occur? On each session? Does it occur after an inactive period?

Geir

PS: Ken, have you experienced similar error messages?

One image?
Gustav Holmberg's picture
Gustav Holmberg
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Hi Geir,

Nope, not after an inactive period, it can happen right after logging in. Having tried a number of images, I think the problem is connected only with one image. This one, on the other hand, consistently refuses to be analysed, and gives such error messages as the ones above.

I first thought it might be a problem with the plate solution, but after having got a new solution (from astrometry.net), the problems persist.

/Gustav

One image?
kge's picture
kge
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Hi Gustav,

I you can share that image with me I'll be able to debug it. My username is KGE.

Geir

One image
Gustav Holmberg's picture
Gustav Holmberg
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Joined: 2011-10-29

Geir,

Shared the image with you, it's a wide-field image of XY Cyg taken on April 28.

Cheers,

/Gustav

Browser capacity exceeded
kge's picture
kge
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Hi Gustav,

Thanks. Turns out the total cookie size of the browser is exceeded. Storing information in cookies is a way to persist data in the client browser, and VPHOT store sequence data in cookies. Since this is a wide-field image of a dense field there are hundreds of stars imported from VSX (assuming that you used that feature), resulting in an overload of the browsers capacity.

You would get the 'header too long' error on log in, since the cookies are still present (but it only applies to the relevant URL). If you get into that situation again you need to delete cookies.

I'm looking at alternative ways to store data, but it will require a large modification to the code, so I can't make any promises as to when that change will be done.

Geir

Capacity Issue Resolved
kge's picture
kge
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kge wrote:
I'm looking at alternative ways to store data, but it will require a large modification to the code, so I can't make any promises as to when that change will be done.

Sometimes (but not often) things are easier than they first seemed. I have been able to replace cookie storage with the new HTML5 storage options, so this issue should now be resolved.

 

Geir

AAVSO 49 Bay State Rd. Cambridge, MA 02138 aavso@aavso.org 617-354-0484