Period 6 Days Late, Light Bleeding

M45 - Epsilon 180ED (First Light)

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.

How Long Does Robaxin Stay In Ur System

Well, a few days ago I decided to make this great picture of Maximo Ruiz a little experiment with wavelets from the raw data.

Unlike proposed by Maxi making basic processing in PixInsight , which shows the decomposition of the image in layers, I have applied over the entire image processing wavelet, but through a mask. This mask is a combination of luminance and a star mask using the following expression in PixelMath:

mask * ~ star_mask

All wavelets settings I have taken completely out of line, before any transfer function halftones. Previously I have neutralized the background using the Background JavaScript Neutralization script written by Oriol Lehmkuhl , which is publicly available at: http://pixinsight.com/forum/viewtopic.php?t=799

Here you can see results obtained in a mouse-over comparison . Please place your mouse cursor on the links below and wait until upload pictures:

http://astrosurf.com/astro35mm/tutorial/ngc253/mouseover_fa.htm

The first wavelet transformation is basically a technique of image restoration, in which I highlighted the small details scale and increased the overall contrast across the galaxy, using only all the luminance parameters.

The second transformation is designed to enhance the image chroma. By increasing the brightness and contrast of small structures of the luminance is almost always a loss of color saturation. In http://pixinsight.com/examples/deconvolution/Gemini-NGC5189/en.html Juan Conejero proposed for enhancement of color saturation more elegant color adjustment using curves. This procedure is a hyperbolic transfer function. And this is precisely what I have done here. This function is usually applied on large-scale components without affecting small, only on those structures represented in the residual layer of wavelet transformation. And of course in a completely linear.

These are the icons of the process used in this example:

• ATrousWaveletTransform
• Large-scale hyperbolic transfer function

To load icons on the platform process Core 1.2 PixInsight do click with right mouse button on the merits of the application and select Load Process Icons ... Finally you have to double click on the icon PixInsight Core process and automatically load the settings in the window ATrousWaveletTransform .

So this is my small contribution.