10 Months of deep sky astrophotography

When I started this site, I just began taking my first astrophotos. The image below was my first attempt to capture the Orion Nebula with my iPhone.

First try at m42 with iPhone

First try at m42 with iPhone

After this first attempt, I improved my astrophoto skills by practicing with planetary imaging. But still, I couldn’t squeeze any more out of the iPhone than this:

Final try at m42 with iPhone

Final try at m42 with iPhone

I decided it had been my final try at iPhone deep sky imaging. I tried my luck with both xbox live and ps3 webcams, but the xbox live cam didn’t pick up anything special and I still haven’t got the ps3 cam to do long exposures.

After I bought my DSLR I could do untracked 0.8 second exposures without too much trailing, but the 0.8 second exposures aren’t that exciting really. It’s my new motorized tracking mount in combination with my DSLR that makes all the difference. When last week the thick layer of clouds showed the tiniest opening, I immediately set up my telescope to take advantage. Unfortunately the opening was so small, that by the time I had everything up and running – which didn’t take that long – a milky but slightly transparent blanket covered the skies again. To make things worse, some serious winds shook my telescope tubes every now and then.

Bright as the Moon is, I could just lower the ISO values and take a decent picture of it through the clouds. To give you an idea of the amount of clouds present, I’ve also added a few images taken at higher ISO values so that you can see the clouds passing in front of the Moon.

Moon at low ISO values

Moon at low ISO values

Despite the once more disappointing skies and the feisty gusts of wind, I decided to try finding the Orion Nebula. After a while I succeeded in doing so and started taking 20 second exposures between successive wind gusts and through the clouds. The majority of the images showed massive trailing and were useless. Some however, were not that bad and after 30 minutes or so I had 4 or 5 decent shots.

After stacking and some post processing, I was suprised to find that I had also captured the Running Man Nebula, which isn’t as bright as the Orion Nebula itself. All in all, the small stack of photos, taken at seriously bad conditions, ended up in my best photo of the Orion Nebula yet. I can’t wait to test my setup under really good conditions 🙂

M42 taken with DSLR and tracking mount through a thin layer of clouds

M42 taken with DSLR and tracking mount through a thin layer of clouds

The Moon, Albireo, M39, M13 and M11

A couple of weeks ago I promised to capture some cool images of double stars, open clusters and globular clusters. Unfortunately, my attempts were seriously hampered by ever returning clouds, but last night I finally had a few hours of clear skies. As always when the moon is visible I captured a nice shot of it:

SIngle exposure of last night's moon

Single exposure of last night’s moon

But by now, we kind of know the moon images right? So I’d like to show you Albireo:

Double star Albireo

Double star Albireo

Albireo is a double star that consists of Ablireo A (Orange) and Alibreo B (Blue-ish). To the naked eye, Albireo is just a single star, but through a telescope Albireo A and B become distuinguishable.

On my to-shoot-list was also the M81 M82 galaxy pair. But by the time it was dark enough to align and focus on polaris, the galaxies were well behind the chimney. Another thing on my list was trying to manually guide my telescope with the shutter open and that also didn’t go very well.

Another image I promised was a telescopic view of the open cluster M39, which I previously imaged with a 80mm lens. While the image may not be the most exciting astrophoto at first sight, M39 surely is interesting. All the brightest stars in the image are blue. No yellow, orange or red giants, which are more common, but just rarer blue stars.

Telescopic view of open cluster M39

Telescopic view of open cluster M39

I also shot my first globular cluster through the telescope. This is M13 (Great cluster in Hercules) which I also imaged before:

M13 globular cluster in Hercules

M13 globular cluster in Hercules

This image is a stack of 30 0.5 second frames and shows a cluster of a large amount of stars. Hundreds more can be seen in longer exposures, which I can’t do since I don’t have a guided mount. The Hercules cluster is the brightest cluster of the northern skies.

At the end of the evening I shot 30 images of the Wild Duck open cluster (Messier 11). It is called the Wild Duck cluster because it somehow resembles a flight of ducks. But to be honest, it doesn’t look like a flight of ducks any more than any other open cluster… Anyway, I like it as the closing picture of this post:

M11 Wild Duck cluster

M11 Wild Duck cluster