M101 and Surroundings with ASTRA by Susy Ghia

Close look of the galaxy M101

The raw images have been shot by Susy Ghia with ASTRA remote telescope, a 90cm f/4.5 reflector with camera SBIG ST-8300M.

The processed image is the composition of 2 frames with exposition of 900 seconds per frame. I used IRIS for registration and stacking, then I used Lightroom CC to stretch the levels and make it more pleasant to look at. I did data reduction using Astrometrica and APT to extract a source list, then I analyzed the luminance frame using TOPCAT and Aladin.

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M100 with ASTRA Remote Telescope by Susy Ghia

The images have been shot by Susy Ghia using ASTRA Remote Telescope #4, a refractor 90mm f/4.5 with SBIG ST-8300M.

M100 and surrounding

This is the result of four images for a total exposure of 35 minutes, I used IRIS for registering and stacking the images, also I applied the Asinh filter to stretch the image to increase the details, than with Lightroom CC I increased the sharpness and reduced the noise a little bit to make it pretty.

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