NGC 2146

About image 

NGC 2146 is a spiral galaxy in Camelopardalis constellation: its angular size is 6.0’x4.5’ and its apparent magnitude is 11.4, with an estimated distance of 70 million light years.
The galaxy's most conspicuous feature is the dusty lanes of a spiral arm that runs in a north-south direction (north is on the left side of the image) across the bright core and then fans out into dusty strips at the southern end. 

Another blue spiral arm is visible above the core, departing from the plane of the dust lane.
This complex morphology could be explained by the interaction of NGC 2146 with another galaxy: one possible candidate could be the small spiral NGC 2146A which is anyway out of the frame of this image. 

This close encounter is credited with the relatively high rates of star formation that qualify NGC 2146 as a starburst galaxy.

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  
Guiding system   ZWO OAG-L with guide camera ASI 174MM
Exposure details  L 47x300" bin3 -15C

             R 18x300" bin3 -15C
             G 18x300" bin3 -15C
          B 18x300" bin3 -15C

                all gain 100
Total integration  8h25'
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           16/17/18 December 2023


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