The INTER-SOL Programme (ISP)
Active Participation in the Programme
All experienced solar observers - no matter whether they're amateurs or
professionals - are welcome to join the growing IS-Team. For the solar
observations a telescope with an unobstructed aperture of at least 2.4" (60mm)
should be used. Up to an aperture of 4" (100mm) we recommend the direct
observation of the sun through filter glasses. Larger telescopes do also
offer the opportunity of projecting the sun's picture onto a white screen
without lowering the quality too much. Important fundamental security hints
regarding solar observations can be found on our general
information page on the sun.
Active solar observers observe the sun regulary, count sunspots carefully
and send in the data at the beginning of the following month using postal
mail, fax or E-mail. The headquarters of the Inter-Sol Programme is the
Volkssternwarte Paderborn (Paderborn Public Observatory) in Germany. In this
place the data is evaluated and monthly means are calculated. Every four
months the active observers receive an evaluation of the collected data via
Blank protocol sheets can be obtained by sending a short message to the
Volkssternwarte Paderborn e.V., Germany. We also offer the opportunity of
sending in data using a special E-Mail protocol. Information about this can
be found on our Service Page.
If you are interested in participating in the Inter-Sol Programme please
send us a short E-Mail message with
the following pieces information: name, address, telephone and telefax number,
E-Mail address, URL of your own web site and the geographical coordinates
of your place of observatory. Please add whether you need blank protocol
sheets or not (e.g. if you can copy them yourself or if you do not need
them because you would like to send in your data using our E-Mail service).
As soon as your first observation data arrive we will send you
the latest evaluations and additional information via postal mail. We present
the Inter-Sol Programme at our observatory in Paderborn, Germany, and are
always glad to receiving pictures of your observatory and your surroundings.
But do only send pictures via postal mail, please. For information on counting
sunspots please be sure to have a look at the
We offer our active observers the opportunity of including a link to their
own private web sites and their E-Mail addresses in our
Observer's Net page. Please inform us if you would
like your URL or E-Mail address to be included there. Without a special remark
no entries are made even if we know the concerned addresses.
We're looking forward to your participation!