Found Images: 2021 December

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bystander
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ESA: A Sprinkling of Stars (NGC 1755)

Post by bystander » Mon Dec 20, 2021 2:50 pm

A Sprinkling of Stars
ESA Hubble Picture of the Week | 2021 Dec 20
The open star cluster NGC 1755 resembles a pinch of salt strewn on a jet-black tablecloth in this image from the NASA/ESA Hubble Space Telescope. This collection of stars resides in one the Milky Way’s near neighbours — the Large Magellanic Cloud — and measures 120 light-years from side to side. Despite this impressive breadth, NGC 1755 is a member of the smaller class of star clusters. Star clusters are gravitationally bound collections of stars, and come in two main varieties — smaller open clusters like NGC 1755, which are hosts to younger stars, and gargantuan globular clusters, which can contain millions of older stars.

Hubble gazed into the heart of NGC 1755 in order to better understand how different populations of stars can co-exist in a single cluster. A population of stars is a group of stars with similar properties such as age or chemical composition, and these populations provide astronomers with valuable insights into the births, lives, and deaths of stars. Clusters in the Magellanic Clouds are particularly useful natural laboratories thanks to the Clouds’ proximity to the Milky Way. Hubbles’s eagle-eyed vision was a vital asset when observing NGC 1755 — with so many stars packed into a small area of sky, Hubble’s high-resolution Advanced Camera for Surveys (ACS) and Wide Field Camera 3 (WFC3) allowed individual stars in the cluster to be distinguished.
Know the quiet place within your heart and touch the rainbow of possibility; be
alive to the gentle breeze of communication, and please stop being such a jerk.
— Garrison Keillor

starsurfer
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Re: Found Images: 2021 December

Post by starsurfer » Mon Dec 20, 2021 11:12 pm

vdB15
https://www.astrobin.com/8qg14q/
Copyright: Jonathan Piques
oIqBS6w05BYl_1824x0_n1wMX-gx.jpg
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starsurfer
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Re: Found Images: 2021 December

Post by starsurfer » Mon Dec 20, 2021 11:14 pm

NGC 6914
https://www.astrobin.com/b0gcwd/
Copyright: Pavel Karavatskiy
0u6-U5WN3Jri_1824x0_-NxSWqtR.jpg
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starsurfer
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Re: Found Images: 2021 December

Post by starsurfer » Mon Dec 20, 2021 11:15 pm

NGC 660
https://www.astrobin.com/9pdhnq/
Copyright: Anis Abdul
F8EoybzQDPTP_1824x0_n1wMX-gx.jpg
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starsurfer
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Re: Found Images: 2021 December

Post by starsurfer » Mon Dec 20, 2021 11:18 pm

SMC
https://www.astrobin.com/0gke5g/B/
Copyright: Rodney Watters
suEkUW5Aov_L_1824x0_n1wMX-gx.jpg
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starsurfer
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Re: Found Images: 2021 December

Post by starsurfer » Mon Dec 20, 2021 11:19 pm

M3
https://www.astrobin.com/wmq97d/
Copyright: Manuel Jimenez
d542YZZJHyN9_1824x0_n1wMX-gx.jpg
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starsurfer
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Re: Found Images: 2021 December

Post by starsurfer » Sat Dec 25, 2021 10:39 pm

M15
http://www.capella-observatory.com/Imag ... rs/M15.htm
Copyright: Stefan Binnewies, Josef Pöpsel and Rainer Sparenberg
Processing: Stefan Heutz
M15.jpg
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starsurfer
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Re: Found Images: 2021 December

Post by starsurfer » Sat Dec 25, 2021 10:41 pm

NGC 5986
https://members.pcug.org.au/~stevec/ngc ... 0_RC14.htm
Copyright: Steve Crouch
ngc5986.jpg
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starsurfer
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Re: Found Images: 2021 December

Post by starsurfer » Mon Dec 27, 2021 11:12 pm

M62
http://www.baskies.com.ar/PHOTOS/M%2062%20LRGB.htm
Copyright: Sergio Eguivar
M62.jpg
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starsurfer
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Re: Found Images: 2021 December

Post by starsurfer » Mon Dec 27, 2021 11:14 pm

M23
https://www.astrobin.com/wo5lsi/B/
Copyright: Malcolm Park
dEsrez65cAL__1824x0_jaUALzhf.jpg
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starsurfer
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Re: Found Images: 2021 December

Post by starsurfer » Mon Dec 27, 2021 11:17 pm

Double Cluster (NGC 869 and NGC 884)
https://www.astrobin.com/kybs1l/
Copyright: Drew Evans
eyQbKs_tG7Mc_1824x0_jaUALzhf.jpg
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starsurfer
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Re: Found Images: 2021 December

Post by starsurfer » Mon Dec 27, 2021 11:23 pm

NGC 7789
https://www.astrobin.com/cqo2nh/
Copyright: Roberto Marinoni
v2TFvvcyTOxY_1824x0_n1wMX-gx.jpg
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starsurfer
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Re: Found Images: 2021 December

Post by starsurfer » Mon Dec 27, 2021 11:26 pm

NGC 654
https://www.astrobin.com/dsq6wx/
Copyright: Massimo Tuninetti
DsgNkaPRV0o4_1824x0_HUnWiWto.jpg
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barretosmed
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Re: Found Images: 2021 December

Post by barretosmed » Tue Dec 28, 2021 2:08 am

The open star cluster Collinder 394 (Cr 394) in the upper region, and NGC 6716 in the lower region

BEST DETAILS:
https://www.astrobin.com/full/aaekex/0/

EQUIPMENT:
ZWO ASI 6200MC COLED
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CEM60 mount
11/08/2021

Location: Jales - SP - Brazil
Author: Fernando Oliveira de Menezes

(Organizing author of the book Astrofotografia Amadora no Brasil
https://clubedeautores.com.br/livro/ast ... -no-brasil
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bystander
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ESA: Lonely Spiral (UGC 9391)

Post by bystander » Tue Dec 28, 2021 11:39 pm

Lonely Spiral
ESA Hubble Picture of the Week | 2021 Dec 27
The lonely spiral galaxy UGC 9391 is shown in this image from the NASA/ESA Hubble Space Telescope’s Wide Field Camera 3. This galaxy resides 130 million light-years from Earth in the constellation Draco near the north celestial pole. The star-studded spiral arms stand in splendid isolation against a backdrop of distant galaxies, which are only visible as indistinct swirls or smudges thanks to their vast distances from Earth. The image also features some much brighter foreground stars closer to home. These bright nearby stars are ringed with diffraction spikes — prominent spikes caused by light interacting with the inner workings of Hubble’s complicated optics.

This image is from a set of Hubble observations which astronomers used to construct the “Cosmic Distance Ladder” — a set of connected measurements allowing the distances to the most distant astronomical objects to be determined. Astronomical distances are only directly measurable for relatively nearby objects — closer than 3000 light-years or so. For distances beyond this, astronomers rely on a set of measured correlations calibrated against nearby objects. UGC 9391 helped astronomers improve their distance estimates by providing a natural laboratory in which to compare two measuring techniques — supernova explosions and Cepheid variables. Improving the precision of distance measurements helps astronomers quantify how quickly the Universe is expanding — one of Hubble’s key science goals.
Know the quiet place within your heart and touch the rainbow of possibility; be
alive to the gentle breeze of communication, and please stop being such a jerk.
— Garrison Keillor