NGC 7640 (And)

Technical data:     15"f/8-Newtonian with APO-Barlow and 16"f/8 Hypergraph used at f/12

                            ST10XME, AO-7 and AstroDon filterset and STL6303, AO-L and Astronomik filter set IIc

                            LRGB in total (L=24x600s; R=6x600s; G=6x600s; B=6x600s; RGB bin2)

                            Comments: FWHM 2,5"

                            Author: Volker Wendel & Bernd Flach-Wilken

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