Publisher: The GAVO DC team / Content Level: Amateur / Validation Level: 2

ID:: ivo://org.gavo.dc/apass/q/cone
Title:: AAVSO Photometric All Sky Survey (APASS) DR10
Short Name:: APASS DR10 cone
Date:: 27 Dec 2024 08:31:05
Publisher:: The GAVO DC team
Description:: AAVSO Photometric All-Sky Survey (APASS), underway since 2010, covers the entire sky from 7.5 < V < 16.5 magnitude, and in the BVugrizY bandpasses. A northern and a southern site are used, each with twin ASA 20cm astrographs and Apogee Aspen CG16m cameras, covering 2.9x2.9 square degrees with 2.6arcsec pixels. Landolt and SDSS standards are used for all-sky solutions, with typical 0.02mag calibration errors on the bright end. Data Release 10 is a complete reprocessing of all 500K images taken with the system, including hundreds of nights not part of DR9. Sextractor is used for star finding and centroiding; DAOPHOT is used for aperture photometry; the astrometry.net plate-solving library is used for basic astrometry, supplanted with more precise WCS that utilizes knowledge of the optical train distortions. With these changes, DR10 includes many more stars than prior releases. More information is available at http://www.aavso.org/apass.

ID:: ivo://edu.gavo.org/hd/gavo_addpms
Title:: Adding catalog data to object lists using the VO
Date:: 27 Dec 2024 08:31:06
Publisher:: The GAVO DC team
Description:: This brief tutorial shows you how to quickly add proper motions and photometry from Gaia to (almost) any object list using the Virtual Observatory. The VO protocol most suited to this kind of this is TAP ("table access protocol") and lets you transfer data and queries to database servers. In the example, we will be using TOPCAT as a client. There is no lock-in to it: There are libraries and other tools allowing an integration of TAP operations into arbitrary workflows – that's what standards are about. Tutorial supplements apply the techniques to Simbad, show how to use TAP from Python, and introduce UCDs.

ID:: ivo://org.gavo.dc/misc/adqlcourse
Title:: A Short Course on ADQL
Short Name:: GAVO ADQL course
Date:: 27 Dec 2024 08:31:03
Publisher:: The GAVO DC team
Description:: This is a course on the Virtual Observatory's main query language ADQL (short for Astronomical Data Query Language), which is a SQL dialect standardised so users do not have to learn new languages each time they want to use a new resource. We also introduce the basic aspects of the Table Access Protocol TAP, which transports ADQL queries, their results as well as the metadata necessary to write meaningful queries. The course comes with many exercises, most of which also have solutions. We hope it is suitable for both self-study and as lecture notes in teacher-led situations.

ID:: ivo://org.gavo.dc/tutreg/gavo_pyvocourse/rec
Title:: A Short Course On PyVO
Short Name:: GAVO pyvo course
Date:: 27 Dec 2024 08:31:13
Publisher:: The GAVO DC team
Description:: This is a course on pyVO, an astropy-affiliated Python library implementing client parts for many protocols in the Virtual Observatory: Simple discovery protocols like SCS, SIAP, and SSAP as well as the sophisticated Table Access Protocol TAP, which allows users to send complex queries to remote tables and retrieve metadata-rich results. There is also an interface to the VO Registry to enable data and service discovery. The course comes with many exercises, most of which also have solutions. We hope it is suitable for both self-study and as lecture notes in teacher-led situations.

ID:: ivo://edu.gavo.org/gavo_aladincalib
Title:: Astrometric Calibration using Aladin
Date:: 27 Dec 2024 08:31:03
Publisher:: The GAVO DC team
Description:: The VO client Aladin offers powerful facilities of creating an astrometrical calibration to images lacking WCS (World Coordinate System) information. This tutorial shows how to go about doing this for an image of the Ring Nebula in Lyr.

ID:: ivo://edu.gavo.org/hd/splat_redshift
Title:: Compute Redshifts of Quasars Using SPLAT-VO
Date:: 27 Dec 2024 08:31:06
Publisher:: The GAVO DC team
Description:: This tutorial uses SPLAT-VO to search the VO registry for spectra of galaxies and quasars. From the obtained spectra, the Hydrogen Lyman Alpha line will be used to compute redshift and velocity

ID:: ivo://edu.gavo.org/eurovo/aida_snconfirm
Title:: Confirmation of an apparent supernova
Date:: 27 Dec 2024 08:31:12
Publisher:: The GAVO DC team
Description:: Within this intermediate use case you learn about supernovae (see also the tutorial “Distance to the Crab Nebula“, ivo://edu.euro-vo.org/tutorials/08_m1_distance) and determine the celestial coordinates of a just discovered candidate supernova on an provided image without astrometric calibration. This use case provides a glimpse of an activity that is representative of the practical tasks that astronomers have to perform when they analyze data.

ID:: ivo://org.gavo.dc/cstl/q/cone
Title:: Constellations as Polygons
Short Name:: cstl cone
Date:: 27 Dec 2024 08:31:13
Publisher:: The GAVO DC team
Description:: This cone search will return all constellations within the cone, together with the J2000 polygons of them.

ID:: ivo://edu.gavo.org/gavo_simulations_teachers
Title:: Introduction to Simulation Databases - Density Fields and Dark Matter Halos
Date:: 27 Dec 2024 08:31:06
Publisher:: The GAVO DC team
Description:: This tutorial was created for a physics teacher workshop (~ high school level). It shows how to extract density fields and information on dark matter halos from the CosmoSim database using SQL queries. It is optimized for brevity.

ID:: ivo://edu.gavo.org/gavo_simulations
Title:: Introduction to Simulation Databases Using CosmoSim
Date:: 27 Dec 2024 08:31:03
Publisher:: The GAVO DC team
Description:: This tutorial shows how to do first SQL-queries on cosmological databases, including retrieving mass functions, extracting merger trees or particles of a specific dark matter halo.

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