Saturno RRGB (José Luis Castaño Azuela)

Contains: Solar system body or event

Saturno RRGB

Link: http://infinitesights.wordpress.com/2014/09/08/astrofotografia-saturno-iv/

Saturno RRGB

Link: http://infinitesights.wordpress.com/2014/09/08/astrofotografia-saturno-iv/

Cuando uno empieza en astrofotografía planetaria suele escuchar y leer que las mejores tomas se obtienen con luz roja (e incluso a veces aplicamos filtros IR-pass)

A nada que uno sepa algo de física se cuestionará esto porque lo lógico es que las mejores resoluciones se obtengan con longitudes de onda más cortas como el verde o el azul. ¿Qué está pasando entonces para que sea tan evidente que lo mejor se obtiene en el canal rojo?

Algo tan simple como el seeing, que afecta más a la luz azul que a la roja (precisamente por la longitud de onda más corta de aquella)

En condiciones ideales de seeing perfecto sí sería mejor el canal azul, con el que obtendríamos imágenes más detalladas. Pero no suele ser el caso, sobre todo para el aficionado que no suele encontrarse en los mejores emplazamientos, que sale cuando puede, etc.

En mi imagen he separado los tres canales para que podáis apreciar la diferencia entre ambos, que es más que notable.

Además, en la imagen RRGB he integrado como luminancia el canal rojo. Al integrarlo así no se tiene en cuenta la información del canal de color sino la trama de la imagen. Cuando tenga un filtro IR-pass usaré sus tomas como luminancia pero hasta entonces me apañaré así.

Espero que os guste.

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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.

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

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