Introducing the Astronomical Digital Video System ADVS Tony

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)

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

ADVS Overview

Video Signal Paths Conventional (interlaced) The tortured signal path

ADVS features at a glance Astronomical Digital Video System; n is all digital n has only one CCD read noise per image n is progressive scan n image start, mid. and end times to +/-0. 001 seconds UT n exposure range 30 frames per second to 8 seconds per frame n requires no Instrument Delay compensation n video easily converted to FITS, complete with metadata n time OSD not embedded on the image, not blocking FOV n (eventually) remote/automated controllable n has complete control over gain, gamma and offset n means you don't have to deal with codecs n uses new. adv file format n. adv file can be repaired if not closed properly n has a choice of 3 cameras @ 3 price ranges n developers are very nice guys, and modest too. . . : -)

ADV File Format and Considerations FITS ADV STREAM 1 (IMAGES/BAND 1) IMAGE (BAND 2) IMAGE (BAND 3) IMAGE (BAND 1) FRAME 1 IMAGE (BAND 1) FRAME 2 IMAGE (BAND 1) FRAME 3 IMAGE (BAND 1) FRAME 4 IMAGE (BAND 1) FRAME N METADATA STREAM 2 (STATUS DATA/BAND 2) IMAGE (BAND 3) FRAME 1 IMAGE (BAND 3) FRAME 2 IMAGE (BAND 3) FRAME 3 IMAGE (BAND 3) FRAME 4 IMAGE (BAND 3) FRAME N METADATA INDEX (FAST ACCESS) Astro Digital Video (ADV) File Structure HEADER DATA SECTIONS DEFINITION SYSTEM METADATA TABLE DATA BLOCKS INDEX TABLE USER METADATA TABLE http: //www. astrodigitalvideo. com. au/Current. ADVFile. Format. pdf

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

ADVR and Software Considerations

Adv 2 Fits Windows Mac OS X Linux Solaris

Tangra 2

Point Grey Flea 3 03 S 1 Flea 3 03 S 3 G-Hopper. Ex Cameras = US $ 565 = US $ 845 = US $1995

QA Testing

Introducing SEXTA VEXA and EXTA by Gerhard Dangl

QA - Timing Testing

ADVS price list (to be confirmed) ADVS-HTCC ----- $289 Hirose Cable ------ $60 ADVR (Ubuntu) ----- $100 (Includes 2 free service tickets) Service tickets ---- $20 Thank You! – Questions? http: //www. astrodigitalvideo. com. au