A great video from one of the guys I dive with off the Aqua Safari. Mark is having way too much fun with his GoPro…
Jupiter Appears in the Dawn
This week will see the reappearance of Jupiter in the dawn sky. This morning the planet will be 10° above the rising Sun, climbing quickly higher each morning. Look for a bright, -2 magnitude object directly above the bright glow of dawn.
Over the next couple weeks there will be a nice series of conjunctions between Jupiter, Mars, Mercury and the Moon.
Breakout
WHAC Monthly Meeting

Postcard from the Reef – Thorns
Reef Critters Hawaii App
There are numerous guides to the reef life found around the Hawaiian Islands. Most are superficial, suitable for the casual tourist snorkeler at best. Short of delving into the professional level publications there are two sources I use all the time. The books by Hoover, one on fish and the other for the invertebrates, are my first stop when attempting to identify an animal. These well thumbed references are usually found on my desk beside the computer.

What about an app to do that?
To my pleasant surprise I have found that there is indeed an app. Combining information from John Hoover, Keoki Stender’s excellent photography, plus information from a few other contributors, you can now download everything to your phone for easy reference, even without a data connection.
Actually there are several apps in the series. As with Hoover’s books, fish and invertebrates are handled separately. You can get the phone version or the iPad oriented HS version.
This snorkelers guide to the most common invertebrates and other commonly seen water inhabitants in Hawai’i includes 374 gorgeous photos together with extensive notes for each. All content is by an experts in the field: Keoki and Yuko Stender, and snorkeling guidebook authors, Judy and Mel Malinowski. As a bonus, links to underwater videos by Keller Laros, Rob Whitton, Mel Malinowski and others are provided. – Description of Reef Critters Hawai’i
The apps are well organized and quick to use. As with any book, it helps to be able to recognize at least the family of fish or critter, this helps in navigating to the correct section. Scrolling though a list of species, each with a thumbnail image, allows quick choice of possible identifications.
It is unlikely that the apps will replace my use of the books… The listings are not as complete as the books or websites, many of the less common species are missing. There is generally only one photo per species, neglecting some color phases and juvenile stages. Still, a quick ID reference in the phone is quite convenient. There are a number of videos which I find fairly useless, I would gladly trade the memory requirements for a more complete species listing.
I have no trouble with the $4.99 cost of the apps, I consider it a contribution to the folks who have put together the great references I have used for many years of diving Hawaiian reefs.
Postcard from the Reef – Barracuda
I did not see them coming. Sweeping in from above and behind I saw them come over the top. With a kick upwards I was in the school, surrounded by beautiful silver fish. A large school of Heller’s barracuda!
These fish feed at night, spending the day hanging out in large schools over the reef. Even resting they move with graceful speed. I attempt to stay in the school for a while, shooting as I go. I am soon out of breath, sucking air from the tank, worth the effort for such a sight!

VLBA Aimed South
So I check the Mauna Kea webcams. The VLBA antenna? Aimed South?

The Lights Went Out in Kapaʻau
An interesting bit of news passed along, HELCO was planning a power outage at 8pm. I expect my reaction to this information was a little different than most… This is great! With a school star party scheduled at Kohala Elementary, the news that the entire town would be dark for the star party was a pleasant surprise.

I stopped to get dinner in Hawi on the way. Surprisingly the Bamboo Restaurant was open early, they normally do not open until 6pm. I find out that the whole town was bracing for the power cut at 8pm, with events and opening times moved up. Not everyone had gotten the notice, I was the only diner in the restaurant. A pleasant meal chatting with the staff and a good burger were just what I needed, food and a brief rest to prepare for the evening.
Mercury Exits the Evening Sky
Mercury will exit the evening sky this week. Currently about 10° above the setting Sun, it will quickly orbit back into the Sun’s glare. It will pass through inferior conjunction on July 9th to reappear in the dawn around July 17th.

