2019 Mosaic Cygnus 2015-19 with Zenit Giove-11A 135mmf4 lens + 550D (EXPLORED 20/08/2019)

Riuscire a realizzare un mosaico astronomico non è cosa semplice.
Quando, come in questo caso, i pannelli sono molti l'acquisizione delle immagini richiede più giorni.
Ciò significa che occorrono più sessioni fotografiche, tutte con gli stessi parametri: ISO, tempo di posa, numero di scatti da combinare, ma anche qualità del cielo, seeing, temperatura ambiente.
Ovviamente si capisce che ciò non è solitamente possibile. Oltretutto altri fattori possono ancorchè complicare le cose: nuvole improvvise, umidità, posizione in cielo non idonea, problemi tecnici.
Per questo motivo questo mosaico ha necessitato di ben 4 anni per essere concluso. Avevo già caricato qui flic.kr/p/M5ihbd lo stesso mosaico mancante del 5° pannello acquisito quest'anno.
Per correttezza chiarisco che ho dovuto trovare in alcuni casi il miglior compromesso possibile, elaborando diversamente alcuni pannelli, proprio perchè uno o più parametri suddetti non erano gli stessi.
Comunque sono molto soddisfatto del risultato complessivo. Questa zona della Via Lattea nella costellazione del Cigno è molto bella: nubi stellari si intrecciano con nubi oscure e nebuose ad emissione. Nebulose famose come la NGC7000, IC5070 e IC1318 padroneggiano sugli innumerevoli filamenti rossi e le altre nebulose minori. Senza dimenticare i tanti ammassi che si confondono con la quantità impressionante di stelle tra le quali spiccano Deneb, Sadr e Fawaris (δCyg).

Qui il link con risoluzione astrometrica
nova.astrometry.net/annotated_full/3539120

___________

Being able to make an astronomical mosaic is not easy.
When, as in this case, the panels are many the acquisition of images takes more days.
This means that more photo sessions are needed, all with the same parameters: ISO, shutter speed, number of shots to be combined, but also sky quality, seeing, outdoor temperature.
Obviously we understand that this is not usually possible. Moreover other factors can even complicate things: sudden clouds, humidity, unsuitable sky position, technical problems.
For these reasons, this mosaic took 4 years to complete. I had already uploaded the same mosaic here flic.kr/p/M5ihbd but it was missing the 5th panel acquired this year.
To be fair, I clarify that in some cases I had to find the best possible compromise, processing some panels differently,
precisely because one or more of the aforementioned parameters were not the same.
However I am satisfied with the overall result. This area of the Milky Way in the Swan constellation is very beautiful: stellar clouds intertwine with dark clouds and emission nebulae. Famous nebulae such as the NGC7000, IC5070 and IC1318 master the countless red strands and other minor nebulae. Not forgetting the many clusters that blend with the impressive amount of stars among which Deneb, Sadr and Fawaris (δCyg).

Here the link with astrometric resolution
nova.astrometry.net/annotated_full/3539120

________

Lens: Zenit Giove-11A 135mm f/4
Camera: Canon EOS 550D (Rebel T2i) mod. Baader BCF
Mount: Sky Watcher HEQ5 Synscan
-1st panel (flic.kr/p/CCbNR7 )> 30x300s 1600iso / 21 dark / 21 flat / 21 bias
date 16/07/2015(24) - 18/08/2015(6)
-2nd panel > 23x300s 1600iso / 21 dark / 21 flat / 21 bias
date 13/08/2015 (17) - 30/06/2019 (6)
-3rd panel (flic.kr/p/CCi68y) > 33x300s 1600iso / 21 dark / 21 flat / 21 bias
date 13/08/2015 (13) - 19/08/2015 (20)
-4th panel > 22x300s 1600iso / 21 dark / 21 flat / 21 bias
date 20/08/2015 (10) - 12/09/2015 (12)
-5th panel > 20X300s 1600iso / 21 dark / 21 flat / 21 bias
date 03/08/2019
Total Integration 10h 40min
Locations (1st, 2nd, 3rd and 4th) monti Nebrodi, (Sicily-Italy) 1550m slm / Rifugio Margio Salice, monti Nebrodi (Sicily-Italy) 1250m slm
Location (5th panel): Rifugio Zarbata, monti Nebrodi (Sicily-Italy) 1100m slm
Elaborazione DSS + PSCS3.

Taken in: Italy / Sicily / Randazzo / Flascio (show map)

Taken on: August 3, 2019

Tags:

astronomia

astronomy

550D

T2i

RebelT2i

sky

astrophotography

universo

universe

astrofotografia

eos550D

dslr

deepspace

deepsky

sicily

sicilia

Nebodi

Via Lattea

Milky Way

zenit

Giove 11-A

Jupiter11-A

135mm

nebulosa

nebulae

nebulose oscure

dark nebulae

North America nebula

rocco parisi

night

Deneb

Sadr

Fawaris

NGC7000

IC5070

IC5068

IC1318

IC1311

LDN889

NGC6910

Sh2-112

Sh2-115

Sh2-119

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Camera: Canon EOS 550D, f/4.0, 301 sec, 135mm, ISO 1600 (more info) (hide info)

Camera:	Canon EOS 550D
Aperture:	f/4.0
Exposure Time:	301
Focal Length:	135mm
ISO:	1600
Exposure Bias:	0 EV
Flash:	Off, Did not fire
Exposure Program:	Manual
Exposure Mode:	Manual
Metering Mode:	Multi-segment
White Balance:	Auto
Color Space:	sRGB
Software:	Adobe Photoshop CS3 Windows
Show full info

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