The Heart Nebula in Bicolor (lefty7283)

The Heart Nebula in Bicolor

Version with stars: https://live.staticflickr.com/65535/48851190632_35225fecc7_o.png

Captured on September 15th, 16th, 19th, 20th, and 21st, 2019 from a bortle 7 zone.

**Equipment:**

* 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:** 17 hours 12 minutes (Camera at Unity Gain, -20°C)

* Ha- 85x360"

* Oiii- 87x360"

* 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/f3tk7KN.png):**

* BatchPreProcessing

* SubframeSelector

* StarAlignment

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

* ImageIntegration

* DrizzleIntegration (2X, VarK 1.5)

* DynamicCrop

* AutomaticBackgroundExtraction

* DynamicBackgroundExtraction

* Deconvolution (With mask to only deconvolve the brighter nebula. Used StarNet++ to create a star mask to add back in the original stars over the deconvolved ones. Star mask adjusted with binarize, convolution, and MorphologicalTransformation. Only Ha deconvolved)

* TVG/MMT Noise Reduction

* PixelMath to combine channels

* R= Ha

* G= 0.35 * Ha + 0.65 * Oiii

* B= 0.2 * Ha + 0.8 * Oiii

* DynamicBackgroundExtraction

* Unlinked STF applied via HistogramTransformation

* [Curve](https://i.imgur.com/Bu8txOD.jpg)Transformations

* SCNR

* LRGBCombination with Stretched Ha as luminance

* LocalHistogramEqualization

* More curves

* DarkStructureEnhance

* MorphologicalTransformation to reduce star sizes

* Resample to 70%

* FastRotation 180 degrees

* Annotation

* StarNet++ to completely remove stars,

Original
Final
B

Narrowband imaging
Suburban Astrophotography
/r/astrophotography
ZWO ASI1600MM/QHY163M

	Distinct awarded users	Total awarded images
Image of the day
Top picks
Top pick nominations

	Image of the day	Top pick	Top pick nominations	Total submitted
Deep sky
Solar system
Extremely wide field
Star trails
Northern lights
Noctilucent clouds
Landscape

	Image of the day	Top pick	Top pick nominations	Total submitted
Backyard
Traveller
Own remote observatory
Amateur hosting facility
Public amaeteur data
Professional, scientific grade data
Mix of multiple sources
Other
Unknown

Submitted The date and time when you submitted this image for IOTD/TP consideration.	...
Views by Submitters (available since September 19th, 2023) Every image is assigned to 50% of available Submitters. In the event that at least 80% of them don't view the image before its time in the IOTD/TP process expires, it's assigned to the other 50% of Submitters and the process begins anew.
Promotions by Submitters When 3 distinct Submitters promote the image, it moves on to the next stage of the process: evaluation for Top Pick status. This requirement, in addition to anonymization of images and distribution to only a subset of them, prevents biases and ensures that the best images are selected.
Promotions by Reviewers When 3 distinct Reviewers promote the image, it moves on to the next stage of the process: evaluation for IOTD status.
Early dismissal Staff members have a lot of images to inspect on a daily basis, and they can dismiss images if they believe they don't meet the requirements for IOTD/TP selection. If an image is dismissed 5 times, it's removed from the process. This streamlines the process and ensures that any bias present in promotions could be overruled by other staff members.

Status	Basic failed
Started	...
Astrometry.net job	3319682
PixInsight job	n/a
PixInsight queue size	n/a
PixInsight stage	n/a

Image Index:

Contribution Index (beta):