NGC 40, Bow Tie Nebula
About image
NGC 40 is a planetary nebula in Cepheus constellation, with apparent dimension 38”x35” and magnitude 12.3: its distance from Earth is about 11500 light years.
Due to its characteristic shape, it is also called “bow tie nebula” or “papillon nebula”: reason of this shape is the strong stellar wind from the hot central star which interacts with the nebula, deforming it until it assumes an irregular shape.
Technical data
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 RGB and Ha 5nm, OIII 5nm
Guiding system ZWO OAG-L with guide camera ASI 174MM
Exposure details R 190x20" bin3 -15C gain 100
G 190x20" bin3 -15C gain 100
B 190x20" bin3 -15C gain 100
Ha 747x20" bin3 -15C gain 100
OIII 178x20" bin3 -15C gain 100
Total integration 8h18'20"
Acquisition Voyager, PHD2
Processing Pixinsight 1.8, Photoshop CS5, StarXTerminator, NoiseXTerminator, BlurXTerminator
SQM-L 20.89
Location Promiod (Aosta Valley, Italy), own remote observatory
Date 10 November, 29/30/31 December 2024
© Roberto Marinoni 2019 - All rights reserved