About image
NGC 1977 is an emission and reflection nebula in Orion constellation.
This is the largest and southernmost section of a complex that also includes the nearby nebulae NGC 1973 and NGC 1975 and constitutes the southernmost part of the large H II Sh-2 279 region: the various parts are interspersed with dark nebulosities, which prevent total vision and make the complex like divided into several parts.
In all this area the formation of new stars is active.
The nebula NGC 1977 reflects the light emitted by some blue stars visible in the central area, in turn emitting a bluish light.
The estimated distance of this nebula is about 1500 light years.
[text adapted from Wikipedia]
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 LRGB and Ha 5nm
Guiding system ZWO OAG-L with guide camera ASI 174MM
Exposure details L 40x300" bin3 -15C gain 100
R 16x300" bin3 -15C gain 100
G 16x300" bin3 -15C gain 100
B 16x300" bin3 -15C gain 100
Total integration 7h20'
Acquisition Voyager, PHD2
Processing Pixinsight 1.8,
Photoshop CS5, StarXTerminator, NoiseXTerminator, BlurXTerminator
SQM-L 21.00
Location Promiod (Aosta
Valley, Italy), own remote observatory
Date 12/13 January 2024