B33 in Hydrogen Alpha (Josh Jones)

B33 in Hydrogen Alpha

The Horsehead nebula taken in monochrome Hydrogen Alpha emissions shows the swirling gases and turbulence happening in the region. This starless version shows the chaotic region which is forming next generation stars as dense gasses collapse and form new stars in the regions. It is said that 30 or more stars may form just from the horsehead dense gases alone.

Date:  October 7-12th, 2022
HA: 159 x 240 seconds
Total Integration time ~10.6 hrs

Calibration Bias: 20
Calibration Dark: 20
Calibration Flats: 30 for each filter
Gain:  139
Cooling:  -10
Processing Software: Stacked in Astro Pixel Processor, captured using NINA, Processed in PixInsight & PS

Telescope: Celestron RASA 11 (620mm focal @ f/2.2)
Filters:  Baader Ultra-Highspeed F/2 3.5nm & 4nm Filters.
Main Camera: ZWO ASI 1600mm-pro Monochrome
Tilt & BackFocus Adjuster:ASG Photon Cage
Mount: Skywatcher EQ6r-Pro
Guide Scope: William Optics 50mm Uniguide
Guide Camera: ZWO ASI 290mm-mini

Cloudy Nights
AAA : Astronomes et Astrographes Amateurs

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	Basic failed
Started	...
Astrometry.net job	6423532
PixInsight job	n/a
PixInsight queue size	n/a
PixInsight stage	n/a

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