NGC 7217

About image
NGC 7217 is a spiral galaxy in Pegasus constellation, about 52 million light years away.
It is characterized by the presence of several concentric rings of stars around its core: it is believed that the cause could be the merger of a small compact galaxy with a larger spiral galaxy.
Technical data R 15x300" bin3 -15C all gain 100
Optic GSO RC12 Truss - Aperture 304mm, focal lenght 2432mm, f/8
Mount 10Micron GM2000 HPSII
Camera ZWO ASI 2600 MM Pro with filter wheel 7 positions
Filters Astrodon Gen2 E-Serie Tru-Balance 50mm unmounted LRGB
Guiding system ZWO OAG-L with guide camera ASI 174MM
Exposure details L 43x300" bin3 -15C
G 15x300" bin3 -15C
B 15x300" bin3 -15C
Total integration 7h20'
Acquisition Voyager, PHD2
Processing Pixinsight 1.8, Photoshop CS5, StarXTerminator, NoiseXTerminator, BlurXTerminator
SQM-L 21.20
Location Promiod (Aosta Valley, Italy), own remote observatory
Date 17/18 September 2025
© Roberto Marinoni 2019 - All rights reserved