Introducing the Astronomical Digital Video System (ADVS) Tony Barry, Dave Gault, and Hristo Pavlov WSAAG and IOTA Presented to International Occultation.

Introducing the Introducing the AAstronomical stronomical DDigital igital VVideo ideo SSystem ystem

(ADVS)(ADVS)

Tony Barry, Dave Gault, and Hristo PavlovTony Barry, Dave Gault, and Hristo PavlovWSAAG and IOTAWSAAG and IOTA

Presented toPresented toInternational Occultation Timing Association 2012 AGMInternational Occultation Timing Association 2012 AGM

Friday, 19Friday, 19thth October 2012 (US) October 2012 (US)Saturday, 20Saturday, 20thth October 2012 (AU) October 2012 (AU)

The Working Group on Scientific Video AstronomyTony Barry, Dave Gault and Hristo Pavlov

First meeting Easter Monday, 25th April 2011

ADVS Overview

Video Signal PathsVideo Signal PathsConventional (interlaced)Conventional (interlaced)

The tortured signal path

ADVS features at a glanceADVS features at a glance

Astronomical Digital Video System; is all digital has only one CCD read noise per image is progressive scan image start, mid. and end times to +/-0.001 seconds UT exposure range 30 frames per second to 8 seconds per frame requires no Instrument Delay compensation video easily converted to FITS, complete with metadata time OSD not embedded on the image, not blocking FOV (eventually) remote/automated controllable has complete control over gain, gamma and offset means you don't have to deal with codecs uses new .adv file format .adv file can be repaired if not closed properly has a choice of 3 cameras @ 3 price ranges developers are very nice guys, and modest too... :-)

ADV File Format and ConsiderationsADV File Format and Considerations

IMAGE (BAND2)

IMAGE (BAND3)

IMAGE (BAND1)

METADATA

FITS

IMAGE (BAND1)

IMAGE (BAND2)

IMAGE (BAND3)

METADATA

ADV

IMAGE (BAND1)

STREAM1 (IMAGES/BAND1)

FRAME1

IMAGE (BAND1)

IMAGE (BAND1)

IMAGE (BAND1)

IMAGE (BAND1)

FRAME2

FRAME3

FRAME4

FRAME N

METADATAMETADATA

STREAM2 (STATUS DATA/BAND2)

METADATAINDEX (FAST ACCESS)

IMAGE (BAND3)FRAME N

IMAGE (BAND3)

IMAGE (BAND3)

IMAGE (BAND3)

IMAGE (BAND3)FRAME4

FRAME3

FRAME2

FRAME1

Astro Digital Video (ADV) File Structure

http://www.astrodigitalvideo.com.au/CurrentADVFileFormat.pdf

ADV Status StreamADV Status Stream

1. GAIN2. GAMMA3. OFFSET (BRIGHTNESS)

4. SYSTEM TIME5. ADVR SYSTEM MESSAGES

6. TIMESTAMP7. EXPOSURE8. TRACKED SATELLITES9. GPS FIX STATUS

ADVR and Software ConsiderationsADVR and Software Considerations

Adv2FitsAdv2Fits

Windows Mac OS X Linux Solaris

Tangra 2Tangra 2

Point Grey CamerasFlea3 03S1 = US $ 565Flea3 03S3 = US $ 845G-HopperEx = US $1995

QA Testing

Introducing SEXTA

VEXA and EXTA by Gerhard Dangl

QA - Timing Testing

Thank You! – Questions?Thank You! – Questions?

http://www.astrodigitalvideo.com.au

ADVS price list (to be confirmed)

ADVS-HTCC --------- $289Hirose Cable ------ $60ADVR (Ubuntu) ----- $100(Includes 2 free service tickets)

Service tickets ---- $20