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First Real Test Esprit 120


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On Wednesday my flattener for the 120 finally arrived, and as luck would have it, last night I had a 5 hour window to grab some data. I went for NGC 869, the Double Cluster, it's a nice overhead target at the moment, and gave me a good chance to test the scope. The seeing wasn't great last night, but I'm impressed with the star shape, colour and the ability to resolve tightly packed stars.

I managed to get an hour each of RGB data, processed in Pixinsight. I improved the star colour by applying Repaired HSV Separation after combining the images, followed by stretching using a combination of ArcsinhStretch and MaskedStretch. Starnet++ allowed me to remove a few artifacts from the background, left by bright stars, and to improve the brightness and star colour.

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