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

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Presentation on theme: "Introducing the Astronomical Digital Video System (ADVS) Tony Barry, Dave Gault, and Hristo Pavlov WSAAG and IOTA Presented to International Occultation."— Presentation transcript:

1 Introducing the Astronomical Digital Video System (ADVS) Tony Barry, Dave Gault, and Hristo Pavlov WSAAG and IOTA Presented to International Occultation Timing Association 2012 AGM Friday, 19 th October 2012 (US) Saturday, 20 th October 2012 (AU)

2 The Working Group on Scientific Video Astronomy Tony Barry, Dave Gault and Hristo Pavlov First meeting Easter Monday, 25 th April 2011

3 ADVS Overview

4 Video Signal Paths Conventional (interlaced) The tortured signal path

5 ADVS 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 +/ 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 3 price ranges developers are very nice guys, and modest too... :-)

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8 ADV File Format and Considerations HEADER DATA SECTIONS DEFINITION SYSTEM METADATA TABLE DATA BLOCKS INDEX TABLE USER METADATA TABLE IMAGE (BAND2) IMAGE (BAND3) IMAGE (BAND1) METADATA FITS IMAGE (BAND1) IMAGE (BAND2) IMAGE (BAND3) METADATA ADV IMAGE (BAND1) STREAM1 (IMAGES/BAND1) FRAME1 IMAGE (BAND1) FRAME2 FRAME3 FRAME4 FRAME N METADATA STREAM2 (STATUS DATA/BAND2) METADATA INDEX (FAST ACCESS) IMAGE (BAND3) FRAME N IMAGE (BAND3) FRAME4 FRAME3 FRAME2 FRAME1 Astro Digital Video (ADV) File Structure

9 ADV Status Stream 1. GAIN 2. GAMMA 3. OFFSET (BRIGHTNESS) 4. SYSTEM TIME 5. ADVR SYSTEM MESSAGES 6. TIMESTAMP 7. EXPOSURE 8. TRACKED SATELLITES 9. GPS FIX STATUS

10 ADVR and Software Considerations

11 Adv2Fits Windows Mac OS X Linux Solaris

12 Tangra 2

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

14 QA Testing

15 Introducing SEXTA VEXA and EXTA by Gerhard Dangl

16 QA - Timing Testing

17 Thank You! – Questions? ADVS price list (to be confirmed) ADVS-HTCC $289 Hirose Cable $60 ADVR (Ubuntu) $100 (Includes 2 free service tickets) Service tickets ---- $20


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