The Astronomer's Telegram
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The Astronomer's Telegram (ATEL) is for the reporting and commenting upon new astronomical observations.

In addition to the Telegram Index on the web, readers may request a Daily Email Digest (see Email Options ). Readers select those subject areas of interest, and Telegrams marked with those subject headings will be mailed to them after each 24-hr period (no email will be sent if no such Telegrams are received). Readers may also request the Instant Email Notices, used to report the discovery, with coordinates, of one of several different types of objects, as well as new outbursts of previously known transients. The Instant Email Notices are sent immediately (within a few seconds) upon receipt.

Reports submitted to The Astronomer's Telegram are not filtered or edited: the final editing on all submissions is made by the author. Submissions are posted onto the web instantly, by software.

All reports are citeable, and referenced for fast retreival at the NASA/ADS Abstract Service.


Editorial Policy

The Astronomer's Telegram is for reporting and commenting on new astronomical observations.

The posting of a Telegram implies the permission of the authors to reproduce and re-distribute its contents electronically, either in whole or in part, when such reproduction or re-distribution does not alter the substantive meaning of the Telegram, and when such reproduction or re-distribution does not exclusively serve a commercial purpose. This does not suspend the ethical requirement of correct citation. The copyright for each Telegram remains the property of the authors. By posting a Telegram, the authors grant non-exclusive royalty-free license to archive and redistribute the Telegram in electronic form for the life of the copyright to The Astronomer's Telegram.

Editors exercise no control over content. The authors are responsible for the content of their Telegrams.

In using The Astronomer's Telegram, all are expected to adhere to commonly accepted standards of professional conduct. Behavior which is to be avoided includes sabotage of software, hardware, or contents of The Astronomer's Telegram ; failure to exercise professional decorum in the content of a Telegram; or purposeful inclusion of fraudulent content in a Telegram. Users who do not adhere to these standards of use may have their access to this site restricted.

Previously, the editor would post information sent to him, which was of an urgent nature, with the author as "Editor". This practice has been discontinued. All such information must now be posted by the originating author.

Submitting a Telegram

Telegrams are submitted with the web interface , where you may also see how your Telegram will look on the website before posting. The Telegram may be authored by anyone; however, all telegrams must be verified by someone's username+password.

Contents of a Telegram

Telegrams are for reporting or commenting upon new astronomical observations. Content is limited to 4000 characters. HTML formatting is encouraged, although we restrict some tags (see HTML ).

Authors reporting discoveries of supernovae or comets are strongly encouraged to also report these to the Central Bureau of Astronomical Telegrams (CBAT), which is the body designated under Commission 6 of the International Astronomical Union which designates the discoverer of supernovae and comets. The Astronomer's Telegram is not affiliated with CBAT.

Format of a Telegram

Telegrams must be in HTML formatted text, and written in English. Other formats (such as postscript, LaTeX, Tex, Word) are not permitted. Some HTML tags are not permitted (the message checker will tell you if you have included any which are not permitted).

Daily Email Digest

Upon signing up for the Digest (on our
Email Options form), the reader selects from among the available subjects. Once a day, the reader will be sent the complete contents of all those Telegrams which were posted with any of the selected subjects. If no such telegrams were posted, no email will be sent. Also, Telegrams sent previously as Instant Email Notices are only distributed in the Daily Email Digest to you if you have not already received it.

Instant Email Notices

Readers may also request (on our
Email Options form) various topics for Instant Email Notices. These are sent out immediately on posting of the Telegram, when the author has requested it. Authors are instructed to only request Instant Email Notices when they are reporting new coordinates, or a new outburst of a transient object. "New Coordinates" includes both the coordinates of a newly discovered object, or a smaller error box for a previously known object (for example, an optical transient associated with a gamma-ray burst). "New Coordinates" are always the result of more precise observations, and not the result of a re-interpretation of previous observations and reclassification of an object.

Becuase of the potential for misuse of the Instant Email Notices and the subsequent annoyance of observers who use these to keep vigilant watch for new, observable objects, users are cautioned to pay strict attention to the requirement of using them only for distributing new coordinates. Users who use the Instant Email Notices for other than this purpose will receive a cautionary warning. Repeated misuse will result in the suspension of the authenticating password, until it is clear that the misunderstanding has been rectified.

Charges

There are no charges for posting or reading any of the telegrams, nor are there charges for any use of any of the facilities. Making ATEL available free of charge is a design specification, and motivates its operational methods.

Producing a Telegram Index

To search Telegrams for specific content, the option Index Display Options (at the top of the Index page) permits several options to do so (including a date filter, and a keyword search in the text and author listing). For example, you may not be interested in Telegrams more than 1 month old, so you can set your defaults on the Refine Selection page so that they do not appear on your Index.

Correcting Errors After a Telegram is Submitted

Authors are responsible for the content of their telegrams. Should the authors discover an error after posting, the authors must make another submission, providing the correction.

Authors (Affil.)

This should be the complete list of authors, and their institutional affiliations. While collaboration names can be used, please note that using exclusively a collaboration name makes bibliographic searches more difficult (we list all publications on the NASA/ADS Abstract service), so we recommend appending at least one author name. Examples:
I. Newton (Cambridge), M. Planck (MPA)

E. Hubble, on behalf of the Full-Sky Optical Survey Team (Palomar)

Email address

A valid email address where readers might send queries to the authors.

Telegram Title

A descriptive and brief title. Example:
New Outburst of GRO J1744-28

Wavebands

Select all wavebands which are relevant to the content of the Telegram. This is one of two filters which will be used by readers to find your Telegram (the other is Objects), so it is important to be accurate.

Objects

Select all Object-types relevant to the content of the telegram. This is one of two filters which will be used by readers to find your telegram (the other is Wavebands), so it is important to be accurate.

Text

The text must be < 4000 characters in length. Many (but not all) HTML tags are permitted. (See
HTML ).

Auto-linking to other Astronomer's Telegrams, IAU Circulars, and Gamma-Ray Burst Coordinate Network (GCN) Circulars (ATEL #N, IAUC #N, GCN #N)

If you include in your message the text: ATEL #25 (for example), a link to the appropriate Telegram will be placed automatically (so you do not have to do this yourself). The same is true for IAU Circulars, for which the proper form is: IAUC #6723. You also link to Gamma-ray Burst Coordinate Network (GCN) Circulars the same way: GCN #114. If you have multiple references, each number must be immediately preceeded (with no intervening spaces) by the "#" symbol, such as: ATEL #23, #24, #25, and #26; or IAUC #6730, #6820, and #6821; but not IAUC # 4242 (no the intervening space). The following is a valid list of references, which will be auto-linked: (ATEL #22, #23; IAUC #6004, #6005; GCN #200, #202).

HTML in Text

We permit many tags to be used in text. Those which we do not permit are APPLET, FRAME, HR, IMG, and META. These restrictions are in place so that the information content of the Telegram does not change after posting, and so that the Telegram documents are identical in layout. We may add other HTML tags to this list in the future, and we may remove some; this depends partially on whether researchers report that their postings are being adversely affected in clarity or content. Note that you may use the "anchor" tag A so that you can directly include links to other sites (such as your own) which may contain additional information.

Optional Link URL

This link will be placed at the bottom of your Telegram, as a highlight. You may use it to direct readers to a website, or to provide them with a figure. Links may be included directly in the body of text, so this is an option largely aesthetic purposes.

Optional Link Title

A brief, descriptive title which describes the contents of the link. Example:
V-Band Finder's Chart for GRB970828
Table of Ephemeris for 1997 QK1

Username and Password

To insure the identity of the author, the text must be submitted with an accepted Username+Password. These may be submitted
at this website .

PGP (Pretty Good Privacy)

What is PGP?

PGP stands for "Pretty Good Privacy". It is a freely available electronic document signing and encryption program. The program is available at:
More information about PGP can be obtained at PGP, Inc..

What is a digital signature?

A digital signature, when made with PGP, takes the text which is signed and runs it through an encryption algorithm, which requires a secret key owned by the signator. What this produces is the orginal text along with the "signature", which could be produced only by a combination of the text and the signator's secret key. The text and the signature are distributed together. Anyone with a copy of the signator's public (not secret) key, may verify the text; if only one character in the text is changed, the signature will not verify.

Why use a digital signature on text, instead of the easier to use username+password?

Digital Signatures ensure that the information has not been changed since it left the author's computer. You can verify the signature yourself. With a copy of the author's key (which we also distribute in the public PGP keyring), the PGP program will verify that no changes have been made to the text since the author's signature was affixed. This level of certainty is valuable: you can be sure that no one in between you and the author changed the text: it is just as good as if you heard the author read it with his or her own voice.

Does everyone need a PGP Key or a username and password to submit a Telegram?

No. While Telegrams may be signed by accepted PGP keys or username and password, these do not necessarily have to be yours. They could belong to anyone. Thus, for example, there could be one PGP key used by your department, to sign all text. However, if you want to, you can always obtain your own key or Username+Password, and submit your text on your own.

How is a PGP Key to be submitted?

Submit the key from our
Key Submission Form . It may take up to 7 days for the Editor to verify both your identity and institutional affiliation, after which you will be contacted that your key has been accepted, and you may then post Telegrams. If you do not have a forms-capabable browser, you may send your key by email, along with a phone number and institutional affiliation to R. Rutledge .

When do I use the PGP Key?

If you wish, you can sign your ASCII text with your (accepted) PGP key, instead of using a Username+Password. This offers extra security, to those who would like to use it.