Philipp Salzgeber Wolfurt / Austria
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M31 the Andromeda Galaxy
| After a long spell of cold weather, I used the first possible
clear night to test some new equipment that I was able to
get my hands on during the last months.
This is my first attempt at autoguiding, I used a QHY5 autoguider
with my Super-Polaris mount. To be able to use the autoguider
a relay box had to be soldered, which was done by Hanno
(thanks!). This was also the first time I used a coma corrector.
Sadly the battery of the camera drained very quickly, therefore
I ended up with only 3 light and 2 dark frames. I am also
not very happy with the flat frames, for which I used the
laptop screen.
As a guidescope I used a 60mm
Eschenbach Novalux 415 refractor. The QHY5
autoguider proved to be quite cabable, as I didn´t need
to search for a guidestar, but was always able to find one
in the field of my 60mm achromatic refractor.
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| Telescope: |
150mm
f/5 Newtonian |
| Camera |
Nikon D200 |
| Exposure: |
3x300s, ISO 800 |
| Date: |
27th, December 2008 |
| Processing: |
Preprocessing (Dark, Flat & Bias
correction), Alignment & stacking in IRIS, histogram
adjustment curves, color correction in Photoshop. |
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