Wandering through the realms of the cosmos, pondering its huge vastness

Night Sky Gazing in June

In the Philippines, the rainy season usually starts in the month of June and runs through about November. During this period,  thunderstorms and typhoons which generally affect a wide area (sometimes half of the archipelago) are common. In fact, only this June three typhoons (namely Dodong, Egay and Falcon) have already visited the country along with heavy rains.

Clear skies were seldom visible for most of the month of June was so stormy. Hence, having an opportunity to spot this season’s prominent constellations during clear nights was  really a blessing to an amateur astronomer like me.🙂

The sky was moonless on the first week of June. So I took this chance to set up the tripod and the Panasonic Lumix digital camera to get nice constellations images. Thanks to Aaron Misayah for loaning his camera to me.🙂

The  Lumix camera features a ‘starry night’ scene mode — a setting which allows you to capture long exposures, with 15, 30, and 60 second shutter speed options. I selected the 60 sec exposure and point to regions of some of my favorite constellations.

Note that the Lumix didn’t have ISO control when in starry night mode. If I set the camera to manual mode (where I do have access to the ISO settings), I don’t have access to the exposure time.  The longest exposure time I have in manual mode is 1/8 seconds. But after I looked at the pictures in manual mode (ISO 1600, 1/8 seconds exposure), I notice that there are a lot of noise.  I think they’re trying to hide the fact that the Lumix is very noisy in high ISO mode so they made it not selectable when you’re using long exposures.

Anyway, below are some of the photos I took from our residential area in San Jose del Monte, Bulacan. I used Photoshop to add the constellation lines.

1 June 2011
camera settings: 6mm, f/2.8, 60 sec. exposure time, ISO-80

Bootes – 12:01 AM 
northwestern sky

Scorpius – 12:30 AM

Zooming into the photo above will reveal vertical streaks (not the star trails). These unnecessary streaks have occurred because I forgot to use the self timer on the camera for this shot. By clicking on the shutter button, even a slight vibration from the finger would create blur on the picture, even when you are using a tripod.

5 June 2011
camera settings: 6mm, f/2.8, 60 sec. exposure time, ISO-80

Leo and Leo Minor – 9:23 PM
Corvus – 9:27 PM
Big Dipper – 9:54 PM

By the way, I am living from a suburban site. The limiting magnitude for such a location is frequently close to 4 . This means that the apparent magnitude of the faintest star that could  be visible to the unaided eye is about magnitude 4.

The original images were a bit darker but I increased the brightness and contrast in the post processing to find out the dimmest star recorded. I found that every star that was visible with the naked eye was in the image, which is good! The results of each shot have actually far exceeded my expectations.  I never thought that a little humble compact camera could go a long way.

I have also tried using this camera in shooting landscape and scenery pictures and it also produced good results. Click here to see my previous post about it.  At about 30-45 minutes after the sunset, the sky is not completely dark yet, but the colour appears to be more intense with traces of natural light still available. It would also be nice to take sky photos during this time.

Perhaps, this could be an interesting camera at a truly dark sky site. I have yet to try that when I still have the opportunity.🙂

Clear skies!

2 responses

  1. nars

    Thanks for this post as I am unfamiliar with az lot of summer constellations. Anyway speaking about the Bootids we camped out at the beach last night hoping to see any meteors showers. But the Bootids are as unpredictable as ever. We did see four sparks near Arcturus between 7 and 7:30. We waited for any more but no show. Then clouds covered the sky. The kids had fun chasing each other in the ark beach and parents enjoyed Tree House Pizza (authentic Italian pizza in Boracay) and went home at nine.

    June 27, 2011 at 5:11 am

    • Wow, I haven’t seen one yet. Anyhow, there’s still time to see them. The Bootids will peak tonight , June 27 near midnight. If we’re lucky we might see a lot of them.

      Clear skies!

      June 27, 2011 at 7:58 pm

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