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Description:
SOMMA DELLE IMMAGINI ED ELABORAZIONE
con PixInsight:
- calibrazione (con superbias) e drizzle
- neutralizzazione background e bilanciamento iniziale dei colori
- deconvoluzione (con maschera per selezionare solo parti luminose delle nebulose ed escludere le stelle)
(immagine ancora lineare - senza "stretching")
- filtro antirumore TVG con maschera selezionare solo le parti deboli delle nebulose ed escludere
le stelle)
- MaskedStretch e sovrapposizione delle stelle sull'autostretch
- stretching
- esaltazione saturazione e colori (con maschera di luminanza)
- esaltazione dei dettagli luminosi con wavelet
(MultiscaleLinearTransformation - con maschera per selezionare le zone luminose meno le stelle)
- riduzione delle stelle (filtro Erosion/Minimum sulla maschera/selezione stelle e poi sul "contour")
- LocalHistogramEqualization (con maschera per selezionare tutta la nebulosa escuso stelle e infitrazioni
nebulari scure ampie e taglienti)
- esaltazione delle zone scure (DarkStructureEnhance)
Con Photoshop:
- salvataggio a 16 bit per canale
- esaltazione vividezza e saturazione dei colori delle stelle
- riduzione del nucleo delle stelle sature (con Controllo sfocatura)
- leggero crop in alto e in basso
Poi, per ottenere la versione finale (seguendo suggerimenti di Rocco Parisi):
- forte stretching RGB: mezzitoni (--> 1.80) + ombre (vicino al piede - senza clippare)
- stretching del rosso: luci (-->240)
- saturazione rossi
- bilanciamento colore (caricando di più il rosso - di circa 10)
- Filtro LCE (Local Contranst Enhancement) di Noel Carboni (Astronomy Tools)
Uploaded: ...
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Please note: The following tables are updated every 24 hours.
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 |
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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. | ... |
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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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