Celestial hemisphere:  Northern  ·  Constellation: Camelopardalis (Cam)  ·  Contains:  NGC 2403  ·  NGC 2404
NGC 2403 - Intermediate Spiral Galaxy in Camelopardalis, lefty7283
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NGC 2403 - Intermediate Spiral Galaxy in Camelopardalis

NGC 2403 - Intermediate Spiral Galaxy in Camelopardalis, lefty7283
Powered byPixInsight

NGC 2403 - Intermediate Spiral Galaxy in Camelopardalis

Equipment

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Acquisition details

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Description

I was visiting my future in-laws and brought along my rig to take advantage of their dark skies under a new moon. Unfortunately my guide camera absolutely refused to talk to my laptop, and [my guiding graph looked like this for most of the night](https://i.imgur.com/kSs4suM.png) (trailing was only this bad for the other target I shot that night). . I at least managed to pick up [a lot of background galaxies](https://i.imgur.com/Yd2QB6J.jpg). Captured on February 21st, 2020 from a bortle 4 zone.

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**[Equipment:](https://i.imgur.com/BYyK1wu.jpg)**

* TPO 6" F/4 Imaging Newtonian

* Orion Sirius EQ-G

* ZWO ASI1600MM-Pro

* Skywatcher Quattro Coma Corrector

* ZWO EFW 8x1.25"/31mm

* Astronomik LRGB+CLS Filters- 31mm

* Astrodon 31mm Ha 5nm, Oiii 3nm

* Agena 50mm Deluxe Straight-Through Guide Scope

* ZWO ASI-120MC for guiding

* Moonlite Autofocuser

**Acquisition:** 10 hours 14 minutes (Camera at Unity Gain, -20°C)

* Lum- 12x300"

* Red- 4x300"

* Green- 4x300"

* Blue- 3x300"

* Darks- 30

* Flats- 30 per filter

**Capture Software:**

* EQMod mount control. Captured using [N.I.N.A.](https://nighttime-imaging.eu/) and PHD2 for guiding and dithering.

**[PixInsight Processing](https://i.imgur.com/AmjZo3R.png):**

* BatchPreProcessing

* StarAlignment

* [Blink](https://youtu.be/sJeuWZNWImE?t=40)

* ImageIntegration

* DrizzleIntrgration (2X, VarK 1.5)

* DynamicCrop

* DynamicBackgroundExtraction 2X

**Lum:**

* Deconvolution

* TGV/MMT noise reduction

* ArcsinhStretch

* HistogramTransformation

**RGB:**

* StarAlignment to drizzled Lum stack

* LinearFit to green

* ChannelCombination

* AutomaticBackgroundExtraction

* BackgroundNeutralization

* ColorCalibration

* SCNR Green

* HSV Repair

* ArcsinhStretch

* HistogramTransformation

* [Curve](https://i.imgur.com/RzHriuu.jpg)Transformation for saturation

* LRGBCombination with Lum

* Curves for lightness and saturation

* ACDNR

* More Curves for lightness adjustments (with range masks)

* LocalHistogramTransformation

* MorphologicalTransformation to reduce star sizes

* Resample to 85%

* Annotation

Comments

Revisions

  • Final
    NGC 2403 - Intermediate Spiral Galaxy in Camelopardalis, lefty7283
    Original
  • NGC 2403 - Intermediate Spiral Galaxy in Camelopardalis, lefty7283
    B

Sky plot

Sky plot

Histogram

NGC 2403 - Intermediate Spiral Galaxy in Camelopardalis, lefty7283