M1 - The Crab Nebula (lefty7283)

Celestial hemisphere: Northern · Constellation: Taurus (Tau) · Contains: Crab nebula · M 1 · NGC 1952 · Sh2-244

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M1 - The Crab Nebula

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M1 - The Crab Nebula

Lots of things went wrong with this image. I forgot to dither, collimation was off, the focus shifted towards the end of the night, and my university had the stadium lights on all night. Despite all of this I managed to pull what I could from the data, and I'm happy with the end result. Captured on November 6th, and 10th, 2018 from a Bortle 7 (Maybe 8 with the stadium lights) zone.

**Equipment:**

* TPO 6" F/4 Imaging Newtonian

* Orion Sirius EQ-G

* Canon Rebel T3i (Astro modified)

* Skywatcher Quattro Coma Corrector

* StarGuy 2" CLS-CCD Filter

* Agena 50mm Deluxe Straight-Through Guide Scope

* ZWO ASI-120MC for guiding

* Deep Sky Dad Autofocuser

**Acquisition:** 4 hours 27 minutes

* Lights- 89x180" at ISO 800

* Darks- 0

* Flats- 0

* Bias- 100

**Capture Software:**

* EQMod mount control. Captured using [N.I.N.A.](https://bitbucket.org/Isbeorn/nina) and PHD2 for guiding and ~~dithering.~~ (This dumbass forgot to click on the dither box)

**PixInsight Processing:**

* BatchPreProcessing

* ImageIntegration

* DrizzleIntegration

* DynamicCrop

* CanonBandingReduction

* Extract Luminance

* DynamicPSF

* StarMask

* Deconvolution

* LRGBCombination (add back deconvolved L)

* DynamicBackgroundExtraction

* PhotometricColorCalibration

* TVGDenoise

* MultiscaleMedianTransform

* ArcsinhStretch

* HistogramTransformation

* ACDNR

* LRGBComination (Chrominance noise reduction)

* [Curves](https://i.imgur.com/bnLglL6.png)Transformation

* MorphologicalTransformation

/r/astrophotography

Please note: The following tables are updated every 24 hours.

Distribution of astrophotographers

This table shows the number of distinct astrophotographers who have been assigned and IOTD/TP award compared to the total number of images awarded.
	Distinct awarded users	Total awarded images
Image of the day
Top picks
Top pick nominations

Distribution of subject types

This table shows the distribution of awards per subject type, compared to the popularity of images of that subject type.
	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

Distribution of data sources

This table shows the distribution of awards per data source, compared to the popularity of images acquired from that data source.
	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

The “AstroBin Image of the Day and Top Picks”, or IOTD/TP, is a long-running system to promote beautiful, interesting, peculiar, or otherwise amazing astrophotographs, with a focus on technical excellence. Learn more.

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	Advanced success
Started	...
Astrometry.net job	3141123
PixInsight job	MQ47EOATPQJB0RKM3B5FFDGEMONVU6LD
PixInsight queue size	n/a
PixInsight stage	n/a

RA (center)	05h34m32s.641
RA (top/left)	05h36m27s.506
RA (top/right)	05h32m57s.160
RA (bottom/right)	05h32m38s.300
RA (bottom/left)	05h36m07s.535

Dec (center)	+22°00′48″.17
Dec (top/left)	+22°15′58″.42
Dec (top/right)	+22°22′02″.72
Dec (bottom/right)	+21°45′31″.99
Dec (bottom/left)	+21°39′30″.34

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M1 - The Crab Nebula

M1 - The Crab Nebula

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Contribution Index (beta):

M1 - The Crab Nebula

M1 - The Crab Nebula

Equipment

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Description

Comments

Sky plot

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