NGC 2683

NGC2683_m.jpg (137290 Byte)

CCD:
Exposure Time:
Instrument:
Focal Length:
Filter:
Guiding:
Corrector:
Raw FWHM (Seeing):
Image Processing:
Sky Conditions:
Who ?

Problems/Comments:

SBIG ST10 E  LRGB Image with CFW8
L=16m 2xBin, R=12m, G=12m, B=18m 3xbin
T1T 1.2m Cassegrain Telescope with the 0.5x CaF2 Focal Reducer
5100mm
CFW8 Filter
Blind guiding without any autoguider !!!
4-lens Reducer with CaF2-element
2.15 arc seconds
deconvolution, DDP
for Trebur conditions above average transparency, 5mag lim. mag.
Philipp Keller, Christian Fuchs and the T1T-Team

This galaxy in Lynx is sometimes called the UFO-galaxy because of its appearance. Some background galaxies can also be seen.

We had to install a stronger motor to the focuser (the focuser tube weights 30kg) and after the repair we used the clear night to take some more pictures.

The extreme tracking performance of this telescope allowed to track the telescope blind without any tracking corrections for 2m integration times. After a better polar alignment maybe 10m will be possible.