El tumblr de Tomás

20 Oct

$M45, The Pleiades M45, The Pleiades in natural color, with luminance and RGB combined. For the color I used 10 minute and shorter 5 minute exposures together with the luminance to help prevent the very hot blue stars from becoming bloated. Total Exposure time 4.75 hours Clear Skies TerryDown Under Observatory on FacebookDown Under ObservatoryYouTube Date of Shoot 13th and 16th October 2012 All exposures unbinned Luminance 16 x 5 min, 15 x 1 min RGB 6 x 10 min ea, 7 x 5 min ea. QHY9M monochrome CCD cooled to -30C www.astrofactors.com Thomas M. Back TMB 92SS F5.5 APO Refractor Paramount GT-1100S German Equatorial Mount (with MKS 4000) Image Aquisition Maxim DL Stacking and Calibrating: CCDStack Registration of images in Registar Post Processing Photoshop CS5 Among the closest star clusters is M45, colloquially known as the “Seven Sisters”. Due to its close proximity (a mere 440 light-years), and population of extremely hot and luminous stars, it can be easily seen with the naked eye near the constellation of Taurus. The number of visible stars in this open cluster can quickly tell an astronomer how dark a location is on a night of observation. Up to fourteen of the more than one thousand stars in M45 can be seen with the unaided eye. The bright blue clouds surrounding the stars forms a reflection nebula known as the Maia Nebula. The enormous cloud of dust reflects the light from the hot young stars and was once assumed to be the remnants of the young stars’ births, but is now known to be the serendipitous interaction of an unrelated dusty region being illuminated by the open cluster of stars passing through its interstellar neighborhood. Look closely and you will see the faint brown clouds of dusty material surrounding the cluster. For comparison here is my earlier shoot from 2 years ago using a Canon 5D II DSLR together with the TMB 130SS http://flic.kr/p/dm2X6V by Terry Hancock www.downunderobservatory.com$

M45, The Pleiades M45, The Pleiades in natural color, with luminance and RGB combined. For the color I used 10 minute and shorter 5 minute exposures together with the luminance to help prevent the very hot blue stars from becoming bloated.

Total Exposure time 4.75 hours

Clear Skies
Terry
Down Under Observatory on Facebook
Down Under Observatory
YouTube

Date of Shoot 13th and 16th October 2012
All exposures unbinned
Luminance 16 x 5 min, 15 x 1 min
RGB 6 x 10 min ea, 7 x 5 min ea.
QHY9M monochrome CCD cooled to -30C www.astrofactors.com
Thomas M. Back TMB 92SS F5.5 APO Refractor
Paramount GT-1100S German Equatorial Mount (with MKS 4000)
Image Aquisition Maxim DL
Stacking and Calibrating: CCDStack
Registration of images in Registar
Post Processing Photoshop CS5

Among the closest star clusters is M45, colloquially known as the “Seven Sisters”. Due to its close proximity (a mere 440 light-years), and population of extremely hot and luminous stars, it can be easily seen with the naked eye near the constellation of Taurus. The number of visible stars in this open cluster can quickly tell an astronomer how dark a location is on a night of observation. Up to fourteen of the more than one thousand stars in M45 can be seen with the unaided eye.

The bright blue clouds surrounding the stars forms a reflection nebula known as the Maia Nebula. The enormous cloud of dust reflects the light from the hot young stars and was once assumed to be the remnants of the young stars’ births, but is now known to be the serendipitous interaction of an unrelated dusty region being illuminated by the open cluster of stars passing through its interstellar neighborhood. Look closely and you will see the faint brown clouds of dusty material surrounding the cluster.

For comparison here is my earlier shoot from 2 years ago using a Canon 5D II DSLR together with the TMB 130SS
http://flic.kr/p/dm2X6V by Terry Hancock www.downunderobservatory.com
14 Mayo

“la sigo pagando y queri que la mate”
(Fuente: larevolutionsoul)
12 Abr

thefincablog:

Overlooking Valparaiso
8 Mar

lindar:

Untitled (Happy Copper) ©2011 Linda Radosinska. ALL RIGHTS RESERVED.

More info: http://www.lindaradosinska.com/7-untitled-happy-copper

Please go to my website to see all of the images from my project ‘Exit Through The Thrift Shop’ that have been released so far!
24 Feb

(vía shannonbenannen)
21 Feb

redbubble:

“Untitled” by laborradelcafe.

Black and white photographic print available matted, mounted or framed.
21 Feb

(vía lilabef)
28 Nov

Palestine_2011_054 by Guerillaphoto on Flickr.
5 Oct

life:

On Sept. 17, 2011, activists decrying corporate greed and the financial world’s influence on U.S. politics began camping out in New York City’s financial district as part of the “Occupy Wall Street” campaign. The protests — which have spread to other cities like Los Angeles, Chicago, and Boston — resulted in some clashes with police and hundreds of arrests in the Big Apple. Go in for a closer look at the ongoing demonstrations.

Taking it to the street — Occupy Wall Street: The Photos
12 Ago

youweakpatheticfool:

Selknam (Onas)
Chile.

Gracias Iglesia Católica por mediar y hacer desaparecer a los Selknam….
(Fuente: edadesciegas, vía inmystrawberryfields)
31 Mayo

starting block ! by kimdokhac on Flickr.