CONFIDENTIAL – Only for Use of Marking Examiners

Official Marking Scheme

Academic Committee of Star Party 2018 All Rights Reserved

Eranga Jayashantha Graduated in Astronomy & Modern Astrophysics at ISYA ( IAU) Hon.mend Dip in Astronomy & Astrophysics (IOAA – China ) B.Sc.(Hons) , Microbiology (Sp), University of Kelaniya,Sri Lanka

Simulators , Catalogues and Ephemerides Used;

Starry Night Pro Plus 6.4.3

The Sky 6 Pro

Redshift 7 Premium Version

Stellarium 17.0

WinJUPOS 10.3.8

Simbad Astronomical catalogue

2qs01

5 2018

All original content submitted along with this work registration is created by the work owner or

published under permission including but not limited to text, design, code, images, photographs and

videos are considered to be the Intellectual Property of the work owner and are protected by

copyrighted.com using the Digital Millennium Copyright Act Title 17 Chapter 512 (c)(3). Reproduction

or re-publication of this content is prohibited without permission.

Star Party 2018 All Island Inter School Observation Competition

Official Marking Scheme

1. Distribution of Marks for Each Round

Round No Description about the Round Marks

01 Moon Mapping 100

02 Observational Astronomy - Theoretical Paper Round 100

03 Spot Test on Observational Astronomy 100

04 Deep Sky Observation 150

05 Celestial Measurements 100

06 Constellation Mapping 150

07 Viva Test on Observational Astronomy 100

08 Jupiter Observation 100

09 Mars Observation 100

10 Saturn Observation 100

OVERALL MARKS 1100

2. Location details

Date : 23rd – 24th of February 2018

Observer’s Location : Peradeniya , Sri Lanka

Longitude : 80.6° E ( 79 E– 82E Approved )

Latitude : 7.3° N ( 6N – 10E Approved)

GPS Coordinates : 7° 15’ 23.734”N , 80° 35’ 47.793”E

Elevation : 480m (No need to consider at marking)

LCT to UT Conversion : UT = ( LCT – 05h 30 min ) / Time Zone : +5.5 h

Seeing : Observer should keep in Antoniadi Scale

I Perfect seeing, without a quiver

II Slight quivering of the image with moments of calm lasting several seconds

III Moderate seeing with larger air tremors that blur the image

IV Poor seeing, Constant troublesome undulations of the image

V Very bad seeing, hardly stable enough to allow a rough sketch to be made

3. Basic planetary observerbility data on the day

Moon Data :-

Constellation : Taurus

RA : 4h 27 min

Dec : 170 00’

App. magnitude : (-11.3)

Moon Phase : First Quarter

Calculated Phase : 53 %

Moon Age : 8 days

Jupiter Data :-

Constellation : Libra

RA : 15 h 23 min

Dec : (-170 23’)

App. magnitude : (-2.1)

Rises : 2323 h (23rd)LCT

Culminates : 0515 h (24th )LCT

Sets : 1108 hLCT

Saturn Data :-

Constellation : Sagittarius

RA : 18h 30 min

Dec : (-220 )

App. magnitude : 0.6

Ring Tilt Value : 260

Rises : 0232 h (24th )

Culminates : 0821 h

Mars Data

Constellation : Ophiucas

RA : 17 h 05 min

Dec : (-220)

App. magnitude : 0.9

Phase : 89%

Rises : 0107 h (24th)

Culminates : 0657 h

Sets : 1242 h

Sets : 1411 h

Hour Angle = Cos-1 Cos (90 - Alt) – Cos (90 – Dec) x Cos (90 – Lat ) Sin ( 90 – Dec) x Sin (90 – Lat )

NOTICE !

All the Observation Reports in Star Party 2018 competition were prepared under the International stands for submission of observation reports which was published by the British Astronomical Association (BAA) & American Association of Variable Stars Observers (AAVSO)

Rises : 1158 h (23rd) LCT

Culminates : 1819 h LCT

Sets : 0042 h (24th) LCT

4. Marking Scheme For the Viva Test

No

Main Topic

Marking official should Consider about following facts

Marks

01

Physical Data of their group Telescope

Aperture / focal length / eyepieces/ Current magnification / Telescope Type / Mounting System

20

02 Description on how to prepare the telescope before observing targets

Keeping tripod in correct position/ leveling the axis/ leveling the finder scope/ Ajusting polar axis , Equatarial axis, declination axis using reference stars method

20

03 Mounting skills of the contestants

The Marking official may select a celestial object using a laser pointer and the contestant should direct the telescope to the object.

The contestant should use the finder scope to mount the object in the visual field.

The object must be located in the center of the crosshair in visual field.

The contestant must mount the object within 2 minutes (Maximum)

The contestant may use most appropriate ocular ( Eyepiece) to observe the object { wide angle/ Barlow )

20

04 Identifying Celestial objects When marking official points on the selected objects , contestant should identify them correctly.

10 X 2 =20

05 Knowledge on modern observational equipment and methods

CCD imaging/spectrum analyzing / finding exoplanets/ Interferometers/ Neutrino detectors/ Adaptive Optics/ Active Optics

20

06 Bonus & Additional Marks

Marking official may inspect their group telescope/ tripod/ scale ajusments/ balancing and give bonus marks (Maximum 10)

10

Total marks for viva test = 100+ bonus 10

5. Marking Scheme for Constellation Mapping Session

Every Team should mention following details on every Constellation mapping report which they are submitting to the Academic committee for marking.

Detail Description about the detail Marking Officials Guidelines

Marks

Name:

Name of the student who made the report

Location:

(Kandy ) or (Peradeniya) , Sri Lanka

No marks without “Sri Lanka”

Date : 24th of February 2018 In any format

Time:

Start = ………………….UT Finished = ………………… UT

No marks for LCT time format

Constellation:

Name of the mapping constellation

In English or Sinhala

Altitude & Azimuth:

Altitude & Azimuth at center of the Constellation, when observer starts mapping

Seeing

Astronomical Seeing in “Antoniadi” or (another standard scale)

Observational Notes

Brief description about the observation

8 Marks For each Report

20 Marks for

Mapping Area

on Each Report

Constellation Mapping Area on the graph paper

Details about the observation Report

The Observer must

indicate the direction

of North

Mapping Scale 1cm = ……. degrees

Total Marks for each mapping

Report =

( 20 + 8 ) 28 Marks

5.1 Additional guidelines for marking officials ~ Constellation Mapping

Every Team should submit 5 Constellation mapping reports. If they have submitted more

than 5, mark the best drawn 5 only.

If the observer has drawn deep sky objects such as Nebulas, Galaxies, Messier objects in

the constellation mapping area; Give MINUS (-5) MARKS. ( Drawing such objects inside

the constellation mapping area is not acceptable ). But the observer can mark those DSO

using standard symbols ( If these objects are seen via naked-eye ) .

Eg : - Observer can mark Orion nebula (using a Symbol) in its position ( at the constellation

of “Orion”) in his/her constellation mapping drawing sheet. But drawing the Orion nebula

IS NOT ACCEPTABLE !

Observers should make a relative apparent magnitude scale and show it on at least one

observation report. IF it missed ( – 10) marks will be added to Total marks of this session.

[They should consider Vega (alpha Lyrae) = 0.0 ].

The apperent magnitudes of each star should be represented by the size of the “dot” which

represents the particular star in the report.

Sizes of dots which represent stars on the drawing sould be proportional to its apparent

magnitude. Marking officials should specially consider about this fact.

The student must indicate the brightest star of each constellation

Specially consider about relative distances within stars of the constellation. Relative

distances between each dot shoud represent the angular separation of respective stars of

the original constellation in the sky.

The marking examiner should pay special attention on “Drawing arcs” which was used by

the observer to map constellation. If there are no such arcs visible on the report, Give

MINUS Marks (-10) to such report.

5.2 Distribution of marks for Constellation mapping round :-

Marks for one report

Marks for 5 reports

Details about the observation Report 8 Marks 8 X 5 = 40 Marks

Maks for the Mapping Area (Observational techniques & Mapping skills)

12 Marks

20 X 5 = 100 Marks

Bonus marks for completion report + Additional Bonus Marks

10 Marks

Total Marks For Constellation Mapping session

150 Marks

Maximum Minus marks

( -5)+(-10)

((-5) X 5 ) – 10 +((-10)x5) = ( - 85 )

6. Marking Scheme for Deep Sky Observation Session

Every Team should mention following details on every Deep sky observation (DSO) report

which they are submitting to the Academic committee for marking.

Detail Description about the detail Guidelines Marks

Name:

Name of the student who made the report

Location:

(Kandy ) or (Peradeniya) , Sri Lanka

No marks without “Sri Lanka”

Date :

23rd or 24th of February 2018

In any format

Time:

Start = ………………….UT Finished = ………………… UT

No marks for LCT time format

Deep Sky Object :

Name of the Deep Sky Object (DSO)

In English or Sinhala

Constellation:

Constellation of the DSO

Type of the object :

Type of the DSO Ex: Galaxy (G)/ Emission Nebula (EN) / Planetary Nebula ( PN)/ Open Cluster ( OC)/ Globular Cluster ( GC) Etc…

Altitude & Azimuth:

Estimated Approximate Altitude & Azimuth of DSO when the observer starts observation

+or- 5 degrees approved

RA and Declination

Right Ascension and Declination by Star Chart

Telescope details

Telescope Type ( Reflector,Refractor or Catadioptric ) Aperture / Focal Length / Used Occular ( Eye Piece) for drawing DSO / Total Magnification / Eye piece type

The observer must specially mention the type of the eyepiece

Seeing

Astronomical Seeing in “Antoniadi “ or another standard scale.

Observational Notes

Brief description about the observation

12 Marks

6.1 Additional guidelines for Marking officials

Every Team should submit 5 Deep Sky Observation (DSO) reports. If they have submitted

more than 5, mark the best drawn 5 only.

6.2 Distribution of Marks :-

Marks for one report

Marks for 8 reports

Details about the report 12 Marks 12 X 5 = 60 Marks

Maks for the Mapping Area of DSO report (Observational techniques & Mapping skills)

15 Marks

15 X 5 = 75 Marks

Bonus marks for FOV indication and other techniques

3 Marks 3 x 5 = 15 Marks

Total Marks For Constellation Mapping session

150 Marks

Maximum Minus marks 00 00

SAMPLE REPORT

Mapping Area

15 Marks for

Mapping Area

on Each

Report

Bonus Marks for the completion of Constellation mapping & DSO observation reports are given by the Head of the Academic committee after compairing all the marked observation reports from all the groups. Observational techniques, mapping skills and submission performances are considered in this task

Jupiter Observation Session

Appendix – Additional Information for Marking Observation Reports

Moon Observation Session

Possible answers

Start (UT) 1345 h – 1445 h

23rd FEB (as scheduled)

Start (LCT) 1915 h – 2015 h

23rd FEB (as scheduled)

Finish (UT) 1345 h – 1445 h

23rd FEB (as scheduled)

Finish (LCT) 1915 h – 2015 h

23rd FEB (as scheduled)

Estimated app.mgtd (-11.3) {±1.0}

Estimated Phase 53 % {±3%}

Moon Age 8 days {±1} (Decimal pts. are NOT Accepted}

Altitude 740 - 610 {±30}

Azimuth 3080 - 2920 {±30}

Possible answers

Start (UT) 2100 h – 2145 h

23rd FEB (as scheduled)

Start (LCT) 0230 h – 0315 h

24th FEB (as scheduled)

Finish (UT) 2100 h – 2145 h

23rd FEB (as scheduled Finish (LCT) 0230 h – 0315 h

24th FEB (as scheduled) Estimated app.mgtd (-2.1) {±1.0}

RA 15 h 23 min {±1 min}

Dec (-170) {±30}

Altitude 420 - 510 {±30}

Azimuth 1210 - 1300 {±30}

Original View of The Moon on 2018 FEB 23 (1415 h UTC ). The Orientation of the image can be vary on the observing telescope.

N

P

F

P

0230 h (LCT)

Check Relative

Distances between

Jovian satellites Inverted Mirrored View of The Jupiter on 2018 FEB 24 (0245 h LCT ). The Orientation of the image

can be changed due to the type of observing telescope.

Original View of The Jupiter on 2018 FEB 24 (0230 h UTC ). The Orientation of the image can be changed due to the type of observing telescope.

Original View of The Jupiter on 2018 FEB 24 (0315 h UTC ). The Orientation of the image can be changed due to the type of observing telescope.

Saturn Observation Session

Possible answers

Start (UT) 2230 h – 2315 h (23rd Feb) (as scheduled)

Altitude 190 - 290 {± 30}

Start (LCT) 0400 h - 0445 h (24th Feb) (as scheduled)

Azimuth 1170 - 1210 {± 30}

Finish (UT) 2230 h – 2315 h (23rd Feb) (as scheduled)

Ring Tilt 260 {± 5.00}

Finish (LCT) 0400 h - 0445 h (24th Feb) (as scheduled)

Estimated

app.mgtd (0.6) {± 0.2}

RA 18h 30 min {± 10min}

Dec (-220 ) {± 30}

0420 h LCT

North Temperate Belt

S

P F

Li

N

Orientation and magnification can be vary on the telescope

2018 FEB 24 (0400 h LCT ).

2018 FEB 24 (0445 h LCT ).

Mars Observation Session

Possible answers

Start (UT) 2145 h - 2230 h (23rd Feb) (as scheduled)

Start (LCT) 0315 h - 0400 h (24th Feb) (as scheduled)

Finish (UT) 2145 h - 2230 h (23rd Feb) (as scheduled)

Finish (LCT) 0315 h - 0400 h (24th Feb) (as scheduled)

Estimated

app.mgtd 0.9 {± 0.2}

RA 17h 05min {± 10min}

Dec (- 22)0 {± 30}

Altitude 280 - 370 {± 30}

Azimuth 1200 - 1260 {± 30}

Star Party 2018 ~ Academic Committee ®. All Rights Reserved

Location of the Mars on the observer’s Sky

7g84R74uOl7DH

1q3

All original content submitted along with this work registration is created by the work owner or

published under permission including but not limited to text, design, code, images, photographs and

videos are considered to be the Intellectual Property of the work owner and are protected by

copyrighted.com using the Digital Millennium Copyright Act Title 17 Chapter 512 (c)(3). Reproduction

or re-publication of this content is prohibited without permission.

Star Party 2018

Celestial Measurements & Observational Techniques

Official Marking Scheme

-------------------------------------------------------------------------------------------------------------

1. 100 (±50) To be confirmed

2. (a) Virgo

(b) Spica

3. 300 (±50)

4. (a) Arcturus

(b) lg (T) = [14.551-(B-V)]/3.684

= [14.551-(1.18 - (-0.05)]/3.684

= 103.62

= 4130 K

Give marks for the range of (4100 K – 4200 K)

(c) Vt = 4.74μD

= 4.74 * 2* 11.3

= 107.12 kms-1

(d) VR = CZ

VR = 1.7 x 105 x 3 x 105 kms-1

= 5.1 kms-1 or { -5.1 kms-1 }

(e) 𝑉𝑜 = √𝑉𝑡2 + 𝑉𝑅

2

𝑉0 = 107.24 𝑘𝑚𝑠−1

5.

සාමාන්‍ය න්‍ාමය Altitude Azimuth Hour Angle

(a) Alphard 730 -720 1950 - 2030 0 h 18 min - 0 h 28 min

(b) Acrux 130 - 140 1620 – 1630 21 h 19 min – 21 h 29 min

6.

Altitude Azimuth RA DEC

Autumnal Equinox 580 - 590 1010 - 1020 12 h 00 min 00

7.

Perimeter of the winter triangle = 27+27+26 = 80 0 (±30)

8. OC

9. 0h 02 min {± 02 min}

10. 1840 h

11. 2458174.281251

12. a) Gemini

b) Castor

c) Pollux

d) Pollux is an variable star. At the time when Bayer developed his catalogue.

Pollux was observed as the second brightest star in the constellation Gemini. But

now, it has higher brightness than Castor (which is named as α Gemini in Bayer’s

catalogue).

13. RA = 22 h 32 min ; DEC = (-70)

Procyon

Betelgeuse

270 (±20)

270 (±20)

Sirius

260 (±20)

14.

15.

16. Yes

17. Jupiter

4o

5o

3o

3o

4o

4o

α

β

γ

N

18. (a)

(b) Refer telescope technical details and perform a simulation.

-------------------------------------------------------------------------------------------------------------------------------

Prepared by:

Eranga Jayashantha

Simulations using:

- Starry Night Professional Plus 6.4.3 (Database updated SN7)

- TheSky Pro 6.0

- Stellarium 17.0.0

- Redshift 7 Premium edition

- WINJUPOS 10.3.8

- Simbad Astronomical Database (CDS)