High-speed Aurora Imager Data (HAI Data)

Contact: Ryuho Kataoka, kataoka.ryuho@nipr.ac.jp

Collaborators: Yusuke Ebihara, Yoshizumi Miyoshi, Kazuo Shiokawa, Akira Kadokura
Development Team Member: Yoko Fukuda, Herbert Akihito Uchida

"Accurate Timestamp Every Frame"

0. UTC Board Technology:

Uchida-Trigger-Clock board: The stability of the acquisition frame rate and the accuracy of time stamp on every image were improved in 2016. A new circuit board was designed to generate 10-1000 fps trigger signals and to release the shutter of Hamamatsu cameras based on the GNSS time information. Each camera system possesses its own circuit board with a micro processing unit (MPU) that is used to communicate with the PC, trigger the shutter signal, and control the LEA-M8F (u-blox) GNSS module. The GNSS module provides time information with a time pulse accuracy of <20 ns and a frequency accuracy of <5 ppb to synchronize the MPU. The UTC board was developed by Herbert Akihito Uchida.

Funding: KAKENHI-PROJECT-16H06286 (PI: K. Shiokawa)

"Beyond Human Eyes"

1. Alaska-Poker Flat: HAI-PF1 Quick-Look Data

HAI-PF1:
sCMOS, narrow FOV, 512x128, 360 fps, BG3, UTC board

HAI-PF2:
sCMOS, fish-eye, 512x512, 80 fps, no filter, UTC board

Geographic Coordinates: 65.12N, 212.57E
Magnetic Latitude: 65.81 deg
Magnetic Midnight: 1056 UT

Publications: Kataoka+2015/Kataoka+2016/Fukuda+2016

Doctor Thesis: Fukuda2017TokyoUniv

Funding:
HAI-PF1: Yamada Science Foundation (PI: R. Kataoka)
HAI-PF2: KAKENHI-PROJECT-25302006 (PI: Y. Miyoshi)

Collaborator: Don Hampton

"North-South Auroras Mirror?"

2. Iceland-Tjornes: HAI-TJO Quick-Look Data

EMCCD, all-sky, 256x256, 100 fps, no filter, UTC board

Geographic Coordinates: 66.20N, 342.90E
Magnetic Latitude: 69.92 deg
Magnetic Midnight: 2359 UT

Funding: KAKENHI-PROJECT-15H02628 (PI: A. Kadokura)

Collaborators: Mitsunori Ozaki, Yasunobu Ogawa, Keisuke Hosokawa, Makoto Taguchi

3. Antarctica-Syowa: HAI-SYO Quick-Look Data

EMCCD, all-sky, 256x256, 100 fps, no filter, UTC board

Geographic Coordinates: 69.00S, 39.59E
Magnetic Latitude: -70.50 deg
Magnetic Midnight: 2355 UT

Funding: JARE AJ0901 High Energy Team (PI: R. Kataoka)

Collaborators: Takanori Nishiyama, Mitsumu Ejiri