Si tratta di un ampio scatto che racchiude la maggior parte della costellazione di Cigno il cigno nel cielo estivo settentrionale, mostrando la varietà di colori nella stella
5400 x 3620 px | 45,7 x 30,6 cm | 18 x 12,1 inches | 300dpi
Data acquisizione:
1 ottobre 2021
Altre informazioni:
This is a wide shot encompassing most of the constellation of Cygnus the Swan in the northern summer sky, showing the variety of colours in the starclouds and nebulas that populate this section of the Milky Way. The colours are brought out by the long exposure used and by contrast enhancements in processing. But yes, they are real! This is not false colour. The red and pink emission nebulas of the North America Nebula (NGC 7000), at left, and the Butterfly Nebula (IC 1318), at centre, dominate. The small red patch at right in the Tulip Nebula, Sh2-101. But the starclouds themselves go from being bluish at left, to more neutral at centre where the main Cygnus Starcloud shines brightest, to yellowish at right in southern Cygnus and northern Aquila, where obscuring dust tints the starlight a warm tone. Other nebulas in this view include the tiny (at this scale) and purple Cocoon Nebula (IC 5146) at far lower left at the end of the B168 dark lane, and the magenta arcs of the Veil Nebula complex (NGC 6992-5 and NGC 6960) at bottom centre. Numerous large star clusters show up, notably NGC 6940 and smaller NGC 6885 to the right of the Veil. NGC 6811 (centre top) and NGC 6819 (to the right) are at top. The yellowish dust-obscured clusters at centre may be Bica 1 and 2. The field is laced with dark nebulas, as this is the area where the Great Rift begins in the Milky Way, formed from dust lanes that split the visible Milky Way.. The most prominent dark nebula is the Funnel Cloud Nebula, aka Le Gentil 3, at left, and the Northern Coal Sack beside and framing the North America Nebula. Deneb is left of centre; at centre is Gamma Cygni, aka Sadr. Albireo is at far right, above centre. This is a stack of 22 x 2-minute exposures with the Canon RF 28-70mm lens at 50mm and f/2.8 on the Canon EOS Ra at ISO 3200, and on the Star Adventurer Mini tracker. I shot 24 frames and only 2 were slightly trailed and were not used. The lens had a URTH Night filter on it to reduce lig
