Aerial photography from the Davis region taken during November 2009 used for Adelie penguin analysis

Aerial photographs were taken at 39 islands in the Vestfold and Rauer Islands regions where occupancy surveys in 2008-09 found breeding Adelie penguin populations. The photographs were taken to estimate the size of breeding Adelie penguin populations.A total of six flights between 18-23 November 2009 were required to cover the Vestfold and Rauer coastlines. The first flight from 0355-0622 UTC on 18th November 2009 covered the southern Vestfolds (see download file).The second flight from 0746-0930 UTC on the 18th November 2009 covered Long Peninsula (see download file).The third flight from 0945-1132 UTC on the 19th November 2009 mostly covered the northern Vestfolds (Bandits, Mikkelson, Tryne, Wyatt Earp, but also covered Gardner (see download file).The fourth flight from 0734-0946 UTC on the 21st November 2009 repeated the previous flight over the northern Vestfolds after preliminary stitching showed that the coverage was not as good as desired. Also, the flight lines for Tryne, Mikkelson and Wyatt Earp were moved to use the north-south flight lines. The opportunity was also taken to repeat a flight over Gardner and perform other tasks (visit 'Woop Woop', the plateau skiway and perform a low level LIDAR scan on the blue ice runway) (see download file).The fifth flight from 1306-1556 UTC on the 21st November 2009 covered Hop and Filla Islands in the Rauers (see download file).The sixth and final flight from 0828-0951 UTC on the 23rd November 2009 covered the remaining Rauer Islands including Forpost, Torckler, Varyarg, Lunnyy and Kryuchock Islands (see download file).Vertical photos were taken along each flight line from a Squirrel AS350BA helicopter (VH-SES) flying at 80 knots and 750m altitude using a Hasselblad H3DII-50 camera with a 150 mm lens and 1/800th second shutter speed. A 3-second shutter closure interval was achieved using an SDK and intervalometer. The camera auto-focussed effectively at infinity using the software Phocus.

本数据集的航拍影像拍摄于韦斯特福尔德（Vestfold）与劳尔群岛（Rauer Islands）区域的39座岛屿，该区域在2008至2009年的种群调查中被确认存在繁殖期阿德利企鹅（Adelie penguin）种群。本次航拍的核心目标为估算繁殖期阿德利企鹅的种群规模。
为覆盖韦斯特福尔德与劳尔群岛沿岸区域，共需完成6架次飞行，作业时间为2009年11月18日至23日。各架次详情如下：
1. 2009年11月18日03:55至06:22 UTC的第一架次，作业区域为韦斯特福尔德群岛南部（详见下载文件）。
2. 2009年11月18日07:46至09:30 UTC的第二架次，覆盖朗半岛（Long Peninsula，详见下载文件）。
3. 2009年11月19日09:45至11:32 UTC的第三架次，主要覆盖韦斯特福尔德群岛北部（含班迪茨岛、米克尔森岛、特赖恩岛、怀亚特厄普岛），同时覆盖加德纳岛（详见下载文件）。
4. 2009年11月21日07:34至09:46 UTC的第四架次：因初步影像拼接结果显示覆盖效果未达预期，本次飞行重复覆盖韦斯特福尔德群岛北部区域；同时调整了特赖恩岛、米克尔森岛与怀亚特厄普岛的飞行航线，采用南北向飞行路径。此外，本次任务还额外完成了三项作业：复飞覆盖加德纳岛、造访“乌普乌普（Woop Woop）”高原滑雪跑道，以及在蓝冰跑道上开展低空激光雷达（LIDAR）扫描作业（详见下载文件）。
5. 2009年11月21日13:06至15:56 UTC的第五架次，覆盖劳尔群岛中的霍普岛与菲拉岛（详见下载文件）。
6. 2009年11月23日08:28至09:51 UTC的第六架次（即本次任务的最后一架次），覆盖剩余劳尔群岛区域，包括福波斯特岛、托克勒岛、瓦里亚格岛、卢内岛与克鲁乔克岛（详见下载文件）。
本次航拍采用搭载于VH-SES注册号的松鼠AS350BA（Squirrel AS350BA）直升机上的哈苏H3DII-50（Hasselblad H3DII-50）相机，搭配150mm镜头完成拍摄。直升机飞行速度为80节，飞行高度为750米，快门速度设置为1/800秒。通过软件开发工具包（SDK）与间隔定时器，实现了3秒的快门闭合间隔。相机借助Phocus软件完成了有效的无穷远自动对焦。