POgLED Instruction manual public -...

Instruction Manual

V1.0 – Felix Bettonvil

Description POgLED (Petnica bOlide alL-‐sky camEra Device) is an automatic camera designed for photographing fireballs. It is based on a DSLR (Canon 350D – 8 Mpxl) with Sigma 4.5mm/F2.8 fisheye lens. Between lens and body a Liquid Crystal chopper is mounted, periodically obscuring the exposure at a rate of 10 cycl/sec. The camera is a sister camera of HHEBBES! and BINGO!, being similar camera systems operated from The Netherlands. Operation basics The camera is put in a dedicated weather proof housing on the roof (Figure 1) and controlled by means of a control cabinet, mounted near the stairway to the roof (Figure 2). The camera works fully automatic: it starts 0.5hr after sunset and stops 0.5hr before sunrise, and works every night, no matter weather conditions. Exposure time is set to 2’ 55”, followed by 5” for data storage. ISO sensitivity is 400. Exposure control and sunrise/sunset times are calculated by a Theben 642

Top 2 radio-‐synchronized (DCF/Frankfurt) timer controller, which has two switching contacts. Contact #2 is connected to the remote release contact of the camera body and makes the 2’ 55” exposures. Contact #1 is used for powering on camera and chopper at twilight. Data is stored on a CF card inside the camera, 8Gb large (biggest size that fits into the camera) and needs to be replaced and emptied periodically. (There is no remote image transfer for robustness, although in theory possible via Wi-‐Fi or USB). Chosen image format is ‘Large’ jpeg, typically

resulting in images 2.5Mb in size. Depending on season it allows for ~2 weeks operation, after which the CF card needs to be exchanged.

Figure 1. Camera installed on the roof of the main building of the Petnica Science

Center.

Figure 2. Control cabinet inside the

building.

The camera works every night, no matter if the night will be clear or not. It cannot be switched off. Heaters and fans in the camera box prevent for condensation. In the Control cabinet all power is converted from 230V to 13.5V (heaters, fan, relays) and 5V (liquid crystal controller) and 8V inside the camera box. Manual operation The automatic operation of the camera can be overruled by a manual switch located in the middle of the upper row of the control cabinet:

-‐ Lever Down = automatic operation

-‐ Lever Up = manual operation, the camera will be switched on.

This function permits to check operation of the camera during daytime. It will NOT disable operation at night. Power ON The main switch of the camera is located in the upper right of the control cabinet. The switch is also a 10A fuse as well as 30mA residual current monitor. It should normally be ON (lever upward) but can be switched off in case of maintenance. Control sequence and status LEDs During all time (both day and night) the external heater on the camera housing is ON. It prevents for condensation of humid air on the protection window. The heater and fan inside the camera box is also ON all the time. They ensure that inside the box never condensation occurs. Also the Liquid crystal chopper controller (blue box in control cabinet) is always on (for temperature stability).

After sunset the Theben timer controller switches ON the camera power. The two right LEDs left of the timer controller will light green. Also the signal to the chopper is connected to the LC chopper (2nd green LEDs starts blinking, with HALF the chopper frequency). The timer controller immediately starts to control the remote release contact of the camera body with the programmed exposure time. When the camera shutter is open the 1st LED lights up.; if not the shutter is closed. If the 1st LED is OFF more then 5sec and other LEDs are ON then something is wrong: -‐ CF card full -‐ malfunction camera GSM The camera system has a GSM telephone I/O unit. The system relays the signal of the 1st LED and measures the temperature of the camera box for information. The information can be received by sending with a mobile telephone a text message to: Telephone number: +xx xxx xxx xxx xxx and message: status #1513 the camera responds with: GX107 1.11e -------- Alarm: off (not used) GSM: 75% (strength GSM signal) Accu: 91% (level battery charge) Area: off (not used) Voltage: 0.4V (adc – not used) ADC: 27.1C (temperature camerabox) IN1: high (camera shutter signal:

high= ON, low = OFF) OUT1: off (relay – not used) OUT2: off (relay – not used) INCALL: OUT1 0s (not used)

IN1 displays the signal of the first LED (low = off; high = on); ADC gives temperature of the sensor in the camera box. If after darkness IN1 is low something is wrong and intervention required. Note: the SIM card in the camera is prepaid, and needs periodically to be recharged via Telenor. Maintenance The camera does not require much maintenance. Main maintenance is once per ~ 2 weeks interchanging of the CF card. This time can also be used to clean the window with a clean soft handkerchief. The inside of the camera window and fisheye lens in general needs not to be cleaned. If the weather is not good (rain, high humidity) it is better to not open the camera box as moisture can be trapped in the box and condensate if temperatures drop. Opening of the box is done by releasing the 4 plastic screws at the 4 corners. Do not tighten them to strong after closing, but ensure that the box is hermetically closed (no wires sticking out, no slit between upper and lower parts). The box in principle is water tight. Several parameters (exposure time, ISO rating, file format, chopper frequency) in principle can be changed, but are chosen based on experience. In case of a needed change, contact Felix (address below). Circuit diagram An electrical diagram of the system is included below.

Contact In case of questions contact: Felix Bettonvil [email protected] References Bettonvil, F.C.M. (2014), “Remote and automatic small-‐scale observatories: experience with an all-‐sky fireball patrol camera”, In,Ramsay S. K., McLean I. S., and Takami H., editors, Proceedings SPIE, Ground-‐based and Airborne Instrumentation for Astronomy V, 9147, id. 91473U, 9 pages Bettonvil, F. (2013), “Digital all-‐sky cameras VII: Putting the camera into operation,” Proceedings of the International Meteor Conference. International Meteor Organization, 34-‐37.

Terminal block #1

Mains fuse

POgLEd Fireball patrol camera 001

Date: 25-‐07-‐15 Designed: FB Rev. R1

5V DC PSU

DCF Imer switch

Relais 13.8V DC PSU

DCF Antenne

GSM Antenne

GSM I/O

monitor

A3

Cabinet Cabinet Door

230V AC

Size:

Item name:

Drawing nr:

Chopper signal generator

POkLON – Petnica bOLide mONitor POgLEd – Petnica bOlide aLl-‐sky camEra

Main layout

Terminal block #2 v

Manual/Auto switch

Terminal block #3

PSU 8V DC

Camera w LC chopper

Heaters/fans

Lens Heaters

Camera box

v

Fan

Fan

0 OUT +8V DC

(to CA

M pow

er)

+13.5V

DC IN from

CAM

pow

er te

rminal

block #3

PSU 5V DC

Nr#1#%#LEFT#%#power#cable Nr#2#%#RIGHT#%#control#cable

Pin## Description color Pin## Description color1 CAM%power blue 1

2 lens%heating brown 2

3 internal%heating%+%fan red 3

4 GND black 4 LC%shutter black

5 5 LC%shutter blue

6 6 flash% black

7 GND black 7 shutter white

8 GND black 8 twilight%sensor black

9 9 twilight%sensor red

10 10 temperature black

11 11 temperature green

GNDH12 shielding GNDH12 shielding

#1 power

#2 control

Bo^om level

Base level

Lens heaters 4, 7 & 8 2 3 1 4

8

8

Internal heaIn

g + fan

Lens heaIn

g CA

M pow

er

+8V DC

from

PSU

8V

Temp

sensor

5 6 7 8 9 1 0 1 1

LC cho

pper

LC cho

pper

flash

shu^

er

Temp sensor

Temp sensor

Temp sensor

NC

Flash (center pin)

CAM pow

er (+

8V DC)

0

Terminal block #3

LC chopper

Shu^

er re

lease

contact (1 pin/red

wire

)

To +8V

DC PSU (red

)

Flash (black)

To Internal heaIn

g +

fan (brown + red)

To Len

s heaIn

g (grey)

Top level

0 From

term

inal block

#3 (internal heaIn

g +

fan) 13.5V

Fan 12V (2x)

R=68Ω?

R=68Ω?

R=10Ω

R=10Ω

R=10Ω

R=10Ω

0

From terminal block #3 (lens heaIng) +13.5V DC



A3

Size:

Item name:

Drawing nr:

Camera housing

(black) (red)

(white)

(black)

(purple)

(blue)

L N

10A 30mA

L N

GND

1) Cam

era cable + shield (2

x)

2) 230V grou

nd

0 0 0

0V DC

+ 13.5V DC

+

1 2 3 4 LC sh

u^er (G

rey) 2

5 6

3 4

From 13.5V PSU

Terminal block #2

7 8

6

Shu^

er re

lease

ON*

OFF

(Back)

1 0 1 1

(Red

) (W

hite

)

From

GSM

mod

ule

1 2 3 4 5 6 7 8 1 0 1 1 9

0

Camera po

wer 0

Terminal block #1

To 13.5V

DC PSU & The

ben Im

er

switch

230V

AC

LC shu^

er

(Grey)

L1 To te

rminal block #3 (tem

p sensor)

Internal heaIn

g camera (+13.5V)

Lens heaIn

g camera (+13.5V)

230V

AC mains (L)



A3

Size:

Item name:

Drawing nr:

Control cabinet – upper row

0V DC

0V DC

To terminal block #3 (LC shu^

er)

To terminal block #3 (LC shu^

er)

To te


p sensor)

To te


p sensor)

To terminal block #3 (flash

contact)

To terminal block #3 (fshu

^er

contact)

Shu^

er=o

pen feed

back

To te

rminal block #3 (CAM

pow

er)

To te

rminal block #3 (in

ternal heat /

fan)

To te

rminal block #3 (le

ns heaIn

g)

0

* ON – Imer switch forced to work at dayIme (for tesIng) OFF – works automaIcally only at night

To The

ben Im

e sw

itch

0 V DC

IN

BNC OUT 1

+5V DC

IN

0 +5V DC

OUT

+13.5V

DC IN

PSU 5V DC

5

5

BNC chopper signal (to relay – pin #14)



A3

Size:

Item name:

Drawing nr:

Control cabinet door – upper row

MHS 2300A wave generator 5 Mhz

Theben Selekta 642 top2 RC

Imer switch

0 V DC

Re

lay

LED

A2 A1

14

11

12 NC NO CO

M

22

24

21

A2 A1

14

11

12 NC NO CO

M

22

24

21

11

14

12

21

24

22

Empty Re

lay

LED mod

ified

A2 A1

LED LED

N

brown

L

blue

L N

DATA + DATA -‐

To te

rminal block #1

1

LED ON = Shu^er open

LED blinking = Chopper ON

LED ON = camera acIvated

0

NO NC COM +13.5V

DC

To DCF anten

na

To DCF anten

na

From

230V mains fu

se

From

230V mains fu

se &

To te

rminal block #2

Chop

per. To term

inal block #2

+13.5V

DC

GSM I/O

module

To external anten

na (b

lack)

0V

+ 13.5V DC

7 6

Digital IN

+ -‐

DC IN

4 5

9

3 2 1

+ 13.5V DC

To external tem

perature

sensor

ADC IN

-‐ +IN -‐ +

Golden

con

nector

1

NO NC COM

L1

0 V DC

4

8

7

C2

C1

Ext 1 Ext 2

L0 0

10

10

0 V DC

Empty Re

lay

LED mod

ified

A2

Relay

A1

LED

7 8

+13.5V

DC 9

2 3

11

12

14

L L0

from BNC wave generator

L



A3

Size:

Item name:

Drawing nr:

Control cabinet door – lower row

To te

rminal block #2

From

flash contact cam

era

230V

AC -‐ L phase

From

switch term

inal block 1/2

From

relay

To The

ben sw

itch Ext 2

To coil relays

From

The

ben relay C1

From

The

ben relay C1

From

shield coax cable

chop

per

To LED

From

relay pin #11

From

flash term

inal block 3 & to

GSM

mod

ule

(Blue) 0 V DC OUT

13.5V/4A DC PSU (VoltCrak FSP-‐1134 – housing modified)

(Brown) 13.5 V DC

OUT

230V

AC IN

230V

AC IN

250V/T0.8A. Note: PSU Heat sink needs to me removed for access to fuse.

Fan (12V)

Fan (12V

)

0

+13.5V

DC



A3

Size:

Item name:

Drawing nr:

Control cabinet – lower row

DATA

+ (b

rown)

Theben DCF antenne 9070401

DATA

– (b

lue)

Black cable (to GS

M m

odule)

GSM antenne



A3

Size:

Item name:

Drawing nr:

External atennas

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