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Hi all, first time posting in the forum so forgive me if I break some rules. I just wanted to share a filter I made for the SPCC process in PixInsight. It is the Optolong UHC. I've searched on the database but no curves there, so I've decided to make it by myself by collecting some data I've found on internet, not the graphs from Optolong site but from a scientist who published an article regarding spectroscopic analysis of various filters. I manually took the points by reading the graph and then moved on python to interpolate data with a cubic spline function, because I didn't have enough points. The resulting graph is almost identical to the real measured one. Moreover, I truncated the data above 750 nm because I think the total transmission and the quantum efficiency of the camera above those wavelengths is negligible, but let me know if this makes sense or I should add more wavelengths. This is the .csv file to import in PixInsight: CSV file. Inside the file there is the "reference" link to the site I got the data from. Maybe someone who uses this filter will find that useful for a perfect color calibration. Davide |
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Hi Davide, the file is no longer online. Do you still have the source you got the data from? I would like to take a look at it in the hope for some more information. CS Gerrit |
