/// <summary>
/// Tries to find an object of the given name
/// </summary>
/// <param name="raDecCoordinate"></param>
/// <param name="radiusInDegrees"></param>
/// <returns></returns>
public IReadOnlyList <AstronomicalObject> QueryAround(RaDecCoordinate raDecCoordinate, float radiusInDegrees)
{
var query = File.ReadAllText("Simbad/Queries/QueryAroundRaDecCoordinates.adql");
query = query
.Replace("{{RACenter}}", Convert.ToString(raDecCoordinate.RightAscension, CultureInfo.InvariantCulture))
.Replace("{{DECCenter}}", Convert.ToString(raDecCoordinate.Declination, CultureInfo.InvariantCulture))
.Replace("{{RadiusInDegrees}}", Convert.ToString(radiusInDegrees, CultureInfo.InvariantCulture));
var result = QuerySimbad(new SimbadTAPQuery(query));
return(result.ToAstronomicalObjects());
}
private static async Task SearchForObjectsAroundRaDecAsync(ReceivedMessage receivedMessage, Match regexMatch, SimbadClient simbadClient)
{
RaDecCoordinate centerCoordinates = null;
const float radiusInDegrees = 0.5f;
try
{
if (regexMatch.Groups["CenterOfSearchRA"].Success)
{
centerCoordinates = new RaDecCoordinate(
double.Parse(regexMatch.Groups["CenterOfSearchRA"].Value, CultureInfo.InvariantCulture),
double.Parse(regexMatch.Groups["CenterOfSearchDEC"].Value, CultureInfo.InvariantCulture));
}
else if (regexMatch.Groups["CenterOfSearchName"].Success)
{
var name = regexMatch.Groups["CenterOfSearchName"].Value;
var queryAroundObject = simbadClient.FindObjectByName(name);
if (queryAroundObject == null)
{
await receivedMessage.Channel.SendMessageAsync($"No object with name {name} found in the SIMBAD databse!").ConfigureAwait(false);
return;
}
centerCoordinates = queryAroundObject.RaDecCoordinate;
}
}
finally
{
if (centerCoordinates == null)
{
await receivedMessage.Channel.SendMessageAsync("Could not parse RA/DEC coordinates").ConfigureAwait(false);
}
}
var objectsAroundTarget = simbadClient.QueryAround(centerCoordinates, radiusInDegrees);
var csvString = CsvExporter.AstronomicalObjectsToCsv(objectsAroundTarget);
await receivedMessage.Channel.SendMessageAsync($"Found {objectsAroundTarget.Count} objects around {centerCoordinates} within a radius of {radiusInDegrees}°:").ConfigureAwait(false);
await receivedMessage.Channel.SendMessageAsync(
new SendMessage(
content : null,
new List <Attachment>
{
new SendAttachment
{
Name = "queryResult.csv",
Content = Encoding.ASCII.GetBytes(csvString)
}
})).ConfigureAwait(false);
}
