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Workshop on Optical data reduction
Kigali Institute of Education (KIE)
  05-11 May 2013

Venue:  Ishema Hotel (Musanze Town)

Contents:
1. Introduction
2. Background
3. Context
4. Objectives
5. Facilitators
6. Participants
7. Scientific program
8. Data
9. Announcement #1

1.Introduction:


Under the sponsorship of the OAD, a Workshop on Optical data reduction (photometry and spectroscopy) will be organised in Rwanda from 05 May to 11 May. Venue: Hotel Ishema (North- 100 km  from the Capital city Kigali)

Optical telescopes are producing a lot of quality data which some can even be accessed online. The ability of handling/processing these data plays the most important role in the timescale of scientific production. However this aspect of processing these data remains an issue. This workshop aims at enhancing the audiences' ability in  reducing/processing various optical data.

Two facilitators specialists in Astronomy/Astrophysics have been invited:

(1) Dr Petri Vaisanen (from South African Astronomical observatory- South Africa).  He will teach  Observational techniques and Spectroscopic data reduction methods.

(2) Dr Mirjana Povic (from Institute of Astrophysics of Andalucia- Spain). She will teach Stellar and extragalactic astronomy  and Photometric data reduction methods.

In the middle of the workshop, participant will be given a project to reduce and analyse data and at the end of the workshop they will  present results.

Prior to the conference we encourage participants to revise their knowledge in Linux and IRAF.


2. Background:

During the year 2009, IAU donated to KIE 5 computers to help students and Lecturers to learn and use astronomy softwares. The computers run completely on linux. With these computers, KIE students have now a possibility to choose astronomy/space science for their undergraduate final year research projects.


In order to make these computers more useful, a permanent astronomy research team is needed. In fact, as we have already entered in the era where Astronomy research can be done locally even in the developing countries using online data mining (some of these data are semi or completely reduced ). In order to make use of these data, there is a need to have a research team trained on various softwares for data reduction to ensure quality in data handling and interpretation.


In addition, following the growing initiatives to build telescopes in East Africa e.g. the Entoto Optical observatory project (in Ethiopia) and the extension of the SKA radio dishes up to Kenya, research teams need to be introduced at universities to make use (for long term) of the data output of these infrastructures. In these regards, there will be opportunity to get data for our own planned objects.


In this project (phase I), we intend to build an astrophysics research team in Rwanda. The phase II will consist at extending it to the whole region an build a pana-East-African multi-wavelength research team which will be able to reduce multi-wavelength photometric and spectroscopic data (Radio, Optical, X-ray, gamma-rays).


In this phase ONE, a one-week workshop in which we will invite visiting astronomers to train the members of the research team (Lecturers doing research in Astrophysics and related sciences in Rwanda) on the proper use of softwares of handling the data. Equal emphasis in the first phase will be also put in the consolidation of a theoretical background on the understanding and analysing the spectroscopic and photometric properties of stars and galaxies. .

3. Context:  Strengthening  Astronomy research at university in Rwanda.

4. Objectives:

At the end of this workshop  the team will be able to:

  • Learn photometric and spectroscopic data reduction techniques

  • Learn the background theory on the spectroscopic and photometric properties of stars and galaxies

  • Learn how to interpret the online available data

  • Use softwares like IRAF, etc.

  • Produce at least one research paper

5. Facilitators:
-Dr Petri Vaisanen (SAAO)

-Dr Mirjana Povic (IAAS- Spain)


6. Participants:

1. Dr Pheneas Nkundabakura (KIE)

2. Dr Uwamahoro Jean (KIE)

3. Mr Mahoro Antoine (KIE)

4. Mr Celestin Sindikubwabo (KIE)

5. Mr Claver Hitimana (KIE)

6. Mrs Agnes Dusabemungu (KIE)

7. Mr Kizito Ndihokubwabo (KIE)

8.  Dr   Kondakova Elena  (NUR) 

9. Prof. Kondakov Oleg (NUR)

10. Dr Nzabonayo Pierre (University of  Burundi)

11. Dr Karangwa Desire (KIST) [To be confirmed]


7. Scientific  program (provisional:

Day 1

Time

Title

Presenter

Indicative content

Monday

7:30-8:30

Breakfast




8:30-9:00

Communication



9:00-10:30

Stellar astronomy

Mirjana

ISM, star formation, stellar evolution, and stellar remnants

10:30-11:00

Tea break



11:00-12:300

Optical observational techniques I

Petri

Observing Basics: Astronomical coordinate systems; parallax; atmospheric extinction dispersion; time systems.

Telescopes: telescope lenses, mirrors, tubes, mounts, domes and enclosures; mirror coatings; optical nature of the Earth’s atmosphere, Example of modern optical telescopes: the Southern African Large Telescope (SALT).

Detectors: the magnitude scale;CCD principles;

12:30-14:00

Lunch



14:00-16:00

Stellar Astronomy

Mirjana

EM radiation, characteristics of stars and stellar systems

16:00-16:30

Tea break



16:30-18:00

Observational techniques II

Petri

Photometry: Absolute and bolometric magnitudes; colour index; blackbodies; filters and photometric systems; spectral energy distributions; two-colour diagrams; dust extinction and reddening; line blanketing; colour-magnitude diagrams; atmospheric extinction, absorption and emission; reducing photometric data; differential photometry; Fourier theory and period analysis.

Day 2

Time

Title

Presenter

Indicative content

Monday

7:30-8:30

Breakfast




8:30-9:00

Communication



9:00-10:30

Extragalactic Astronomy

Mirjana

Milky way, Galaxy Classifications (Morphology and redshifts), The Tully-Fisher Relation, Quasar Absorption Lines (The Gaseous Halos of Galaxies), Galaxy Clustering, AGN: Their Properties and Evolution, Emission Line Physics, Photometric Evolution of Galaxies (Evolution of Galaxy Luminosities and Colors),

10:30-11:00

Tea break



11:00-12:300

Optical observational techniques I

Petri

Spectroscopy Principles: Early history; dispersion and prisms; objective prism spectroscopy; diffraction gratings, the grating equation and grating parameters; échelle gratings; grisms; volume phase holographic gratings (VPHGs); spectrometer design, collimators and cameras; spectrograph examples including the SALT RSS; slit effects; CCD gain and digitization; signal to noise calculations; sky background.

12:30-14:00

Lunch



14:00-16:00

Multiwavelength database, Virtual observatory

Tools (TopCAT etc)

Mirjana

Multiwavelength database, Virtual observatory

Tools for searching

16:00-16:30

Tea break



16:30-18:00

Introduction to Python

Petri

PYRAF/pysalt

Day 3

Time

Title

Session 1 : Photometry

Session 2: Spectroscopy

Presenter

Indicative content

Presenter

Indicative content

Wed-

7:30-8:30

Breakfast






8:30-9:00

Communication





9:00-10:30

Photometric and Spectroscopic techniques and tools

Mirjana

All processing steps from the raw image to scientific data and nagnitude measurements, etc

Petri

All processing steps from the raw image to scientific data and measurements, line identification etc.

10:30-11:00

Tea break





11:00-12:300

Hands-on session

Mirjana


Petri


12:30-14:00

Lunch





14:00-16:00

Hand-on session

Mirjana


Petri


16:00-16:30

Tea break





16:30-18:00

Hands-on session


Mirjana


Petri


Day 4

Time

Title

Session 1 : Photometry

Session 2: Spectroscopy

Presenter

Indicative content

Presenter

Indicative content

Thursday

7:30-8:30

Breakfast






8:30-9:00

Communication





9:00-10:30

Hands-on session

Mirjana


Petri


10:30-11:00

Tea break





11:00-12:300

Hands-on session

Mirjana

Extracting photometric information: temperature, mass, luminosity, distance, variability: lightcurve etc

Petri

Extracting spectral information: expansion speed, red shift, distance, equivalent width, electronic density, Black hole mass, etc

12:30-14:00

Lunch





14:00-16:00

Instructions for projects

Mirjana

Projects

Petri

Projects

16:00-16:30

Tea break





16:30-18:00

Projects


Mirjana


Petri


Day 5

Time

Title

Session 1 : Photometry

Session 2: Spectroscopy

Presenter

Indicative content

Presenter

Indicative content

Friday

7:30-8:30

Breakfast






8:30-9:00

Communication





9:00-10:30

Projects

Mirjana


Petri


10:30-11:00

Tea break





11:00-12:300

Projects

Mirjana


Petri


12:30-14:00

Lunch





14:00-16:00

Projects

Mirjana

Projects

Petri

Projects

16:00-16:30

Tea break





16:30-18:30

Presentation of projects + Discussion

+Closing

Participants

19:00

Diner



8. Data  

If you need to practice prior to the workshop, you can download data and other related files here. https://sites.google.com/site/dataforworkshop/

9. Group Announcement # 1:    26 May 2013

  Dear participants,

  This is the first workshop group announcement.  We are at 9 days before the start of the workshop and Instructions inside here are regarding the organisation.  Other announcements will be sent on Monday and Wednesday (the last one).

9.1. Scientific program:
 The science programme is posted at the workshop web page (https://sites.google.com/site/rwandaiya2009/home/w). The two first days are dedicated to general sessions. The last three days, will consist of methods of data reduction.

9.2. Social program:  On Wednesday, May 8,  the last  afternoon session will be replaced by an  excursion around Musanze and its vicinity.    Arrangements will be made for a  talk at one of the  high school in the town. 

9.3. Tourism in and around Musanze: 
Musanze is Rwanda's most mountainous district, containing the largest part of the Volcanoes and a National Park. Five of the eight volcanoes of the Virunga chain (Karisimbi, Bisoke, Sabyinyo, Gahinga and Muhabura) are within the district boundaries. It is also in this district that most of Rwanda's Mountain Gorillas, the rarest specie in the world, are found, making it the most popular tourist destination in the country. Musanze's main Town, Ruhengeri, is one of the largest Towns in Rwanda and also serves as a tourist hub. Tourist attractions in Musanze District include; The mountain gorillas as the major tourist attraction, volcanic mountains within the Virunga chain, Flora and Fauna, Ruhondo lake in the south western part covering about 28 Km2. Virunga National park covering about 60 km2 And cultural houses in Kinigi.
More details at:http://www.musanze.gov.rw/index.php?id=946

9.4. Other logistics:
The Hotel offers access to wireless, etc. We will also make available a printer.

9.5. Sports:
 Inside the Hotel, there is  equipment for sports (but on payment).  Behind the Hotel, there is a stadium which is open for people who want to do sport mainly jogging. For people who want to join the morning  jogging, we will be doing it from 5:30 am to 6:15 am.

9.6. Laptops:
 It is recommended to bring your own laptop if you have one. This will help you to continue to do the data manipulation after the workshop without re-installation of the softwares. For Elena, Oleg, Pierre let me know in advance if you don't have one so that I can book one  for you. 
9.7. Softwares to install:
 (1) Install Ubuntu LINUX on your computer. Very recommended before the start of the workshop.
 (2) Download and install  IRAF. When installing IRAF, the following package are installed and no need to reinstall them separately: IRAF, STSDAS, TABLES, PyRAF, PyWCS, DS9, X11IRAF, WCSTOOLS, TELARCHIVE, PHIST, STECF, FV and XVISTA
(See Instructions at https://docs.astro.columbia.edu/attachment/wiki/IRAF/iraf-64-bit_step_by_step_installation)
(3) Download and install TOPCAT (Instructions can be found at the section Downloads of the page http://www.star.bris.ac.uk/~mbt/topcat/)
 (4) Download Sextractor at http://sourceforge.net/projects/sextractor/files/ (Untar and install the source using ./install.sh) . Learn the basics about Sextractor at http://www.bisque.com/Tom/Sextractor/sextractor.asp

(*) For Elena, Oleg and Pierre, a help desk will be put at your arrival. As soon as you arrive, see Antoine and Celestin for a help on (2), (3) and (4).

(**) Facilitators can suggest other installations needed  during the workshop.

9.9. Groups:
Starting Wednesday, we will run two parallel sessions (Photometry & Spectroscopy). Elena, Oleg and Pierre, you will let us know  which group you will join.
Already confirmed members:
Photometry: Mirjana (Facilitator), Agnes, Claver, Antoine
Spectroscopy: Petri (Facilitator), Pheneas, Celestin, Kizito

9.10. Download manuals and Data: If you want to do exercises prior to the workshop, you can find the data  and related files at this link (https://sites.google.com/site/dataforworkshop/)

................................................................................

Contact (Local Organising Committee):

Dr. Pheneas Nkundabakura

Kigali Institute of Education (KIE) 

Maths-Physics Department 

P.O.  Box 5039 

Kigali-Rwanda 

Cell: +250785517032

Email: nkundapheneas@yahoo.fr

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