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The endangered
Richmond birdwing butterfly (Ornithoptera richmondia) is the largest subtropical Australian butterfly
Riu (river) Ebre
No usar esta imagen en ningún medio sin mi autorización © Derechos reservados. 2017 © Josep Maria Pascual
Please don't use this image © All rights reserved. 2017 © Josep Maria Pascual
A wide-field image of the region of Perseus and Taurus from the pink California Nebula (NGC 1499) at top, to the blue Pleiades star cluster (M45) at bottom. In between and surrounding the main bright objects are many tendrils of interstellar dust clouds, varying in shades of brown and pale blue.
Around the Pleiades the faint clouds reflect some of the blue light of the young stars, but away from the Pleiades the clouds take on a warm reddish tone, or appear as just dark fingers blocking all light from behind. At centre right are some brighter patches known as IC 348 around the star Atik, aka Omicron Persei. The glow at left in the darkest cloud is IC 2087. The small star cluster at upper right is NGC 1342.
This is a stack of 30 x 4-minute exposures with the Canon EOS Ra camera at ISO 800, and the low-cost Rokinon 85mm f/1.4 lens at f/4 and shooting through a NISI Natural Night light pollution filter, a mild broadband filter.
All stacking, alignment and processing with Photoshiop 2021, with luminosity masks created with Lumenzia v9 extension panel, which was very helpful in bringing the faint dust clouds out from the dark background. No dark frames or LENR applied on this cool winter night.
I know that I am a bit late to the party, but here is my take of the close encounter of Mars with the Pleiades open cluster.
I would have loved to shoot this as a deepscape from a dark sky location with some nice landscape in the foreground, but first I was clouded out and when it finally cleared, I had to fly the other day and was only able to shoot from my light polluted backyard.
Sometimes, you have to take what you can, even if it means to shoot a reflection nebula under a bortle 5 sky. Hope I will have better conditions in 17 years, when this encounter will happen again.
EXIF
Canon EOS 7D mkii
Canon EF 70-200mm f/2.8
Skywatcher AZ-GTI
Controlled with ASIair
120 x 30s + 60 x 15s @ ISO800 @ 200mm f/2.8