The Rosette nebula is a large and relatively bright emission nebula in the constellation Monoceros. Various parts of the nebula have separate NGC numbers and the embedded star cluster itself is NGC2244Read More
It looks as if 2013 will be a good year for comets. This spring Comet Panstarrs is visible in the darkening sky after Sunset and in December comet ISON should put up an even more impressive show.
Move your mouse over the image to see annotations for some galaxies.
|150mm f/5 Newtonian, Baader MPCC Coma Corrector
|4x300s, ISO 800
|18th, April 2009
|Preprocessing (Dark, Flat & Bias correction), Alignment & stacking in IRIS, histogram adjustment curves, color correction in Photoshop.
This is a two-frame mosaic taken with a DMK21 camera and an Astro-Professional 80mm ED refractor:
The very obvious crater in the middle of the mosaic is Tycho, it is relatively young and therefore the ejecta rays can still be seen brightly across the lunar landscape. Please note the dark area directly around Tycho which is also caused by ejecta of the impact.
To the lower right is the beautiful crater Clavius which has a nice curve of smaller craters on the floor. To the lower left you can see the very elongated crater Schiller which was produced by an oblique impact. Read More
Today I took the first lunar images using my 80mm ED refractor, this is a 100% crop from an image I shot with my Nikon D200:
After showing Venus, M45, M42, Saturn and the moon to my in-laws I stayed on the roof for a little longer and took some AVIs using our club’s new DMK camera. I used my 150mm f/5 Newtonian telescope with a 2x barlow and a 90° prism (this gives about 2,7x). Again I had big troubles focusing because of my wobbly Super-Polaris mount.
Crater Gassendi and Mare Humorum:
110mm Schiefspiegler and QHY5 (ALCCD5)
As this telescope has a dobsonian mount without tracking I was only able to take about 50 pictures while the
lunar featur we wanted to photograph was passing through the field of view.
After a very nice display the day before, another solar eruption triggered an even more impressive display
All images were taken with a Coolpix 4500 camera, either with the wide-angle converter, or the fisheye converter.
Here are some images, additionally you can view these two videos: