More wide field adventures

Continuing my exporation of the Atik 460 OSC, I connected a  Canon 200mm f/2.8L lens ( I guess in telescope terms it would be a 72mm f/2.8 refractor!)  to it last night, and had a go at shooting M31, M33 and M45 before the lens began to dew up and the clouds rolled in.

First off is M31, which is a stack of 23 x 3min exposures:

Next up was M33 in Triangulum, this time comprised of 25 x 3min subframes:

And finally the Pleiades, M45. This was put together from just 8 x 3min exposures, and condensation was beginning to build up on the lens, I think, which cused the stars to look a little fatter than usual:

 

M31 and M45

Two more iconic objects taken with the Atik 460 OSC, but this time with a Sigma 150mm f/2.8 lens attached, as these objects are far too large to fit in the field of view of a 1000mm focal length telescope!!

M31, the Andromeda Galaxy, is a stack of 9 x 3min exposures:

And M45 is a stack of just 6 x 3min frames:

I was hoping to catch more of the nebulosity around the Pleiades, but not much of it was captured. In both images, the brighter stars are very bloated, and next time I’ll try putting a UV blocking filter into the path to see if that helps at all.

Another M31…

Over the last couple of nights I’ve collected some frames of M31 using an Astronomik CLS filter. In total, the image below was made from a total of 34 x 5 min exposures at ISO800 through the Equinox ED80. I haven’t got the white balance sorted out yet, so I converted the final image to a greyscale image.

Who needs a telescope, anyway!

After a long break from the blog, during which I’ve got a permanent observatory put together, had lots of collimation woes with the SCT (still not resolved), and got married (!), I’ve finally got round to taking a few more pictures, now that the nights are getting a little bit darker. We’ve also had one or two clear ones!!At the moment, I have my Equinox 80mm refractor mounted on the EQ-6 side-by-side with my Canon. All the pictures below have been taken over the last few nights with either a 105mm or a 200mm lens, autoguided using the Lodestar through the telescope. It’s amazing what you can pick up with just a camera lens!

First up is the Dumbbell nebula, M27. This used the 105mm lens, and is a stack of 30 x 30 sec exposures at ISO 800.


Next comes M31, the Andromeda galaxy. This is a stack of 25 x 30 sec and 5 x 120 sec exposures, all at ISO800.

And finally, NGC7000, the North America Nebula. For this, I really pushed the boat out with a stack of 20 x 2 min and 5 x 5 min exposures. All those photons make a difference!

In all cases, the images were acquired and processed in ImagesPlus.