Undo

Stop what you are doing immediately and read this first. Unfortunately there is no UNDO button, but there are ways to recover from a mistake, if you have not continued from that point. That is, do not navigate to a different tool and do not continue editing (cutting), do not exit, whatever. Breathe and read:

 

I deleted something

The most common unfortunate mistake is to delete your project (etc.) or (re)source catalog. You could have done this by either using the icon menu button for "cut" or by using the menu strip EDIT - CUT - CUT.... Recall that a "delete" is a "cut-without-paste". Whether or not it was a complete catalog or, e.g., a single scan, the salvage method usually is the same:

If you have used the icon menu "cut", and if you have not done anything else, the paste icon (\includegraphics[height=3mm]{psimg/page_paste.png.ps}) from the icon menu will paste the "deleted" item back. You would probably first want to select the location to paste it back to (i.e., at the proper branch of the tree; individual scans can't be replaced as PBs).

If you used the menu strip EDIT - CUT - CUT... the solution is to select the proper place and replace the item with EDIT - PASTE - PASTE..., assuming nothing else was cut and placed in the paste buffer in between.

If meanwhile other operations have been performed, they could have interfered with the previous solutions. If you have not navigated to another tool, which implicitly saved your changes, an option then is to exit gracefully with FILE - EXIT without saving your work. You will not save any of your work done after your last save, but it may be less work to recover from that, than to recover from your mistake.

If you ended up saving your work, whether or not intentional, you may have to start from scratch to recreate what you have lost. Sorry, no UNDO button (yet).

 

I used the wrong position/velocity/frequency in all scans

There is a very simple "bulk edit" feature available. Correct your (re)source in the SCT or RCT catalog, and use EDIT - BULK EDIT to identify the scans you want to correct.

 

I submitted an incorrect SB

If you are convinced that you have submitted the wrong SB, or a SB that you know is incorrect (e.g., you forgot to update the resource or a position for a source), do not panic. Simply navigate to the submission page of the SB and cancel the incorrect SB. An editable copy of the SB will appear in the tree, which you can correct and submit again.

 

I exited before I was finished

Upon exiting you were asked whether you wanted to save your work in the tool you were editing in. Work in another tool would have been saved each time you left it to go to a different tool. Saved changes cannot be undone, but if you exited before finishing up, you can log in again and continue from there.

Connect with NRAO

The NSF National Radio Astronomy Observatory and NSF Green Bank Observatory are facilities of the U.S. National Science Foundation operated under cooperative agreement by Associated Universities, Inc.

Founded in 1956, the NSF NRAO provides state-of-the-art radio telescope facilities for use by the international scientific community. NSF NRAO telescopes are open to all astronomers regardless of institutional or national affiliation. Observing time on NSF NRAO telescopes is available on a competitive basis to qualified scientists after evaluation of research proposals on the basis of scientific merit, the capability of the instruments to do the work, and the availability of the telescope during the requested time. NSF NRAO also provides both formal and informal programs in education and public outreach for teachers, students, the general public, and the media.

The U.S. National Science Foundation (U.S. NSF) is an independent federal agency created by Congress in 1950 "to promote the progress of science; to advance the national health, prosperity, and welfare; to secure the national defense..."

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