Archives for: April 2006, 05

Saturn attempt 5

Few more images of Saturn. First off the satellites around it, taken with a Toucam Pro II at prime focus through a Tal 2M 150mm reflector.

Saturn

Managed to pick up Enceladus, which is famous as they've recently got data suggesting plumes of water are being blown out from under the surface.

Next up, another image through the 3x barlow.

Saturn

The Moon a day later

Took 12 more images of the Moon tonight, put them all together, just a shame I've got some holes! Compare with yesterday's image to see how far it's gone in it's orbit.

The Moon
Click to enlarge.

Jupiter

It couldn't escape for long.

Here's Jupiter. No the red spot isn't visible - it's behind the left-hand limb when these were taken. I'd also probably need an IR filter to get enough contrast to take an image. Although it is currently visible - it just popped out from around the side a couple of hours ago.

These were taken at prime focus - all images through the barlow lens lacked enough contrast to get any detail out of the images - need IR filter.

Jupiter

And finally Jupiter and the Galilean moons.

Jupiter and the Galilean moons

The Moon

Yup it's been a busy night. Next up is the Moon, this is composed from three seperate photos - the Moon is too large to image at prime focus.

The Moon
Click to enlarge.

To the very north you can just make southern rim of Mare Tranquillitatis. Sinus Asperitatis is directly south of it, marked by the funny little crater that looks like it has a tail (pointing to the west). To the south-east, is Mare Nectaris easy to identify thanks to the two large craters to the north-west - Theophilus and Cyrillus.

Mare Tranquillitatis is famous as that's where Apollo 11 touched down. In fact the landing zone is in this image - if you take the two equal-sized craters to the very north, and draw a line down downward and to the right - about the same length as the craters are long wise, that's roughly where Apollo 11 landed.

If you take the large prominent crater Theophilus and draw a line from it's central mountain - to the left and up a tiny bit, you come to another smaller crater with it's western rim lit up brightly by the Sun - carry on going in the same direction for the same distance again and you come to the landing site of Apollo 16 - it's right on the terminator line at the moment.

Saturn attempt 4

My forth attempt at imaging Saturn. Conditions today were pretty rubbish. However I had built a new eyepiece adapter - so I had the right focal length to use my 3x barlow. The adapter itself is nothing special, in fact it's just some rolled up paper. But it works.

First up, an image composed of two images of Saturn, both taken with the camera at price focus. Using two different exposures to capture the satellites and planet itself.

Saturn

Conditions were so bad I had to hugely increase the brightness to reveal Rhea and Tethys - Dione was no where to be seen. It's obvious how much smaller Saturn is over last month's viewing - no trickery, both images were scaled up 2x and this month's is about 15% smaller.

Now for the first shot with the 3x barlow, the barlow provides more magnification so this allows the camera to use more of it's pixels on the target - bad point, put's glass in the way which decreases brightness and contrast.

Saturn

Need some decent seeing conditions fast, the Earth is leaving Saturn in it's dust, and I've gotta get some better images. :)