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lefty7283

NGC 1502 - Jolly Roger Cluster

  • 3 sessions
  • 173 images
  • 2.88 hours

Details

No idea why it's called this but it's what Stellarium has named it ¯\\\_(ツ)_/¯. It's also at the end of the [Kemble's Cascade asterism](https://www.reddit.com/r/astrophotography/comments/jzm9gp/kembles_cascade_ngc1502/), which is one of my favorite objects to view through binoculars (it's basically a straight line of stars over 2 degrees long)

Captured on April 9-11th, 2023 from my bortle 8 apartment balcony.

**Places where I host my other images:**

 [Instagram](https://www.instagram.com/leftysastrophotography/) | [Flickr](https://www.flickr.com/people/leftysastrophotography/) 

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**[Equipment:](https://i.imgur.com/ejpKkwU.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, Sii 5nm

* Agena 50mm Deluxe Straight-Through Guide Scope

* ZWO ASI-120mc for guiding

* Moonlite Autofocuser

**Acquisition:** 2 hours 52 minutes (Camera at half Unity Gain, -15°C)

* L- 90x60"

* R - 28x90"

* G - 28x90"

* B - 26x90"

* Darks- 30

* Flats- 30 per filter

**Capture Software:**

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

**PixInsight Processing**

* BatchPreProcessing

* StarAlignment

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

* ImageIntegration

**Luminance Linear:**

* DynamicCrop

* DynamicBackgroundExtraction

* NoiseXterminator

* ArcsinhStretch+HistogramTransformation to bring nonlinear

**RGB Linear:**

* DynamicCrop

* DynamicBackgroundExtraction

* ChannelCombination

* SpectrophotometricColorCalibration

* HSV Repair

* Slight SCNR green

* AcrsinhStretch + HistogramTransformation to stretch nonlinear

**Nonlinear:**

* added stretch luminance to stretched RGB via LRGBCombination

* DeepSNR

* shitloads of CurveTransformations to adjust hue, lightness, saturation, etc. (some with star masks)

* annotation

Sessions

Date L R G B
2023-04-10 0.53 0.17 0.17 0.17
2023-04-11 0.5 0.17 0.17 0.13
2023-04-12 0.48 0.13 0.13 0.13
Total 1.51 0.47 0.47 0.43

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