M20 - NGC6514 nebulosa trifida (Claudio Antinoro)

M20 - NGC6514 nebulosa trifida

M20 - NGC6514 -
"Nebulosa Trifida"

Situata nella costellazione del Sagittario è una nebulosa ad emissione nelle righe spettrali dell'idrogeno ionizzato (H-Alpha) ed a riflessione (la regione con i colori più freddi) detta "trifida" per via delle tre linee scure centrali che sono formate prevalentemente da polveri che la dividono in tre parti.
È uno dei soggetti del profondo cielo più fotografato nel periodo estivo, insieme alla vicina nebulosa M8 - "Laguna".
Esse sono situate in una regione ricca di stelle data anche la vicinanza con il nucleo centrale della Via Lattea.
La Nebulosa Trifida è situata a circa 5.000 anni luce dalla Terra.

Strumenti di ripresa
- Celestron C8 SC con riduttore di focale F6.3
- Zwo Asi 183MC con filtro CLS
- Guida fuori asse Celestron con camera Zwo Asi 224mc

Montati su AzEQ6GT

Dati di scatto
Somma di 48 Light da 120" Gain 45 - Offset 16 a -15°
20 Dark
20 Flat
100 Bias

- Il setup è stato remotizzato con astroberry ed in particolare è stata usata la suite Ekos di Kstars;

Le riprese sono state effettuate da Piano Battaglia sui monti del Parco delle Madonie in provincia di Palermo a circa 1500 mt sul livello del mare con un SQM di 21.40 circa in data 18 giugno 2023;

Elaborazione con

- Pixinsight per stacking dei frame, regolazioni cromatiche e fotometriche, Blurxterminator e Noisexterminator per riduzione gradienti, deconvoluzione e riduzione del rumore;
- Darktable per le regolazioni finali ed il microcontrasto.

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

Image Index:

Contribution Index (beta):