This is the first light with the Takahashi Epsilon 180ED. The medium picture is still processing, you only have an initial adjustment of histograms and color saturation. There are a total of 17 shots of 10 minutes with the Canon EOS 350D at ISO 200, no darks or flats, from ASSR Peguera (Barcelona) and the temperature was about 2 ° during the acquisition of the shots
The image has two problems. First, the focus was done manually without the aid of computers, only through the camera's little screen. The focus point was varied between feeds at night, so that the result of the combined image is slightly out of focus. On the other hand, this camera properly prevents the arrival of the rays from the telescope, which has a very short focal ratio of F/2.8, which generates some very annoying gradients can only be effectively corrected by acquiring good flats . This effect also causes a scattering of light in the stars in the bottom of the image, generating 'Spikes' additional that are not part of the secondary mirror spider. Obviously this problem does not occur with CCD cameras.
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