5 ESSENTIAL ELEMENTS FOR ERUCHOMOSC ALGAID

This image of ALKAID was obtained that has a 10cm apo refractor by using a focal duration of 1000 mm. within the sky of Milan, Bortle 9 or also even worse (!). . A result of the superior light-weight pollution and the desire to function with out a guide scope I needed to acquire photos at large gain (three hundred) and 20s of integration Each an