Submissions: 2014 April

carlosdn · Post by **carlosdn** » Tue Apr 15, 2014 9:01 am

Eclipse total de Luna - Abril de 2014
Avellaneda - Argentina

: Click to view full size image

Autor: Carlos Di Nallo

philhart · Post by **philhart** » Tue Apr 15, 2014 2:12 pm

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Lunar Eclipse over Maryborough Railway Station, a grand station for a small regional Victorian town built during the gold rush days. As Mark Twain dryly observed on his visit in 1895: "A railway station with a town attached".

http://en.wikipedia.org/wiki/Maryboroug ... ay_station

Canon 5D Mark II, 24-105mm lens @80mm. Clamped to a ladder.

http://philhart.com/content/lunar-eclip ... gh-station

Phil

Sebapol · Post by **Sebapol** » Tue Apr 15, 2014 8:24 pm

From San Miguel, Buenos Aires, Argentina

1- Moon, Spica, Mars

https://farm4.staticflickr.com/3667/138 ... 880c_o.jpg

2- Moon & Spica

https://farm3.staticflickr.com/2824/138 ... c2fb_o.jpg

3- Eclipsed

https://farm6.staticflickr.com/5544/138 ... 091c_o.jpg

4- Sequence

https://farm4.staticflickr.com/3764/138 ... ef17_o.jpg

shaunnesy · Post by **shaunnesy** » Tue Apr 15, 2014 11:26 pm

Processed the cluster in Ursa Major tonight, only six hours data (3 Luminance and 1 hour R,G and B)

: Click to view full size image

IanP · Post by **IanP** » Wed Apr 16, 2014 6:24 am

Great Carina Nebula
Higher res @
http://westcoastpics23.blogspot.com.au/?view=flipcard

StefanoDeRosa · Post by **StefanoDeRosa** » Wed Apr 16, 2014 10:02 am

Full Moon over the Basilica of Don Bosco
http://stefanoderosa.com/
Copyright: Stefano De Rosa

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Please find above two images and a sequence of the Full Moon rising behind the Basilica of Don Bosco, located few kilometers from Turin, the evening of April 15, 2014.
In the second picture the Moon appears flattened as rising alongside the Basilica.
Images taken come 2.7 km away from the Basilica.

Best regards
Stefano

aldomottino · Post by **aldomottino** » Wed Apr 16, 2014 12:56 pm

Moon and Spica.
Copyright: Aldo Mottino (Rosario, Argentina)

rankinstudio · Post by **rankinstudio** » Wed Apr 16, 2014 2:35 pm

April 2014 Lunar Eclipse
http://www.rankinstudio.com
Copyright: David Rankin

: Click to view full size image

Rothkko · Post by **Rothkko** » Wed Apr 16, 2014 5:20 pm

sunspots 2032 to 2037

: mérida, spain. 2014-04-15

http://asterisk.apod.com/viewtopic.php? ... 97#p224097

Sandgirl · Post by **Sandgirl** » Wed Apr 16, 2014 7:51 pm

A Study in Scarlet
Credit: ESO
An article: http://www.eso.org/public/news/eso1413/

Mars at Opposition and Full Moon
Copyrights: Ziad El-Zaatari

TACC: Supercomputers Help Understand How Black Holes Swallow Stars
Credit: NASA; S. Gezari (The Johns Hopkins University); and J. Guillochon (University of California, Santa Cruz)
An article: https://www.tacc.utexas.edu/news/featur ... smic-slurp

IR Mars on April 14th 2014
Copyrights: Leo Aerts

NASA Cassini Images May Reveal Birth of a Saturn Moon
Credits: NASA/JPL-Caltech/Space Science Institute
An article: http://www.jpl.nasa.gov/news/news.php?release=2014-112

Mars April 14th 2014
Copyrights: Simon Kidd

SkyViking · Post by **SkyViking** » Wed Apr 16, 2014 11:06 pm

IC 4603 - The Turbulent Heart of the Scorpion
http://www.rolfolsenastrophotography.com
Copyright: Rolf Wahl Olsen

: Click to view full size image

Link to large image (4 MB)

Here is the latest image from my 12.5" f/4 scope. Data was gathered from early March and into April.
Interestingly, while the whole Rho Ophiuchi region is one of the most photographed in the sky there hardly exists any high resolution images of this; its colourful action packed core area.

About the image:
This image shows the core region of the Rho Ophiuchi Complex, centered around the prominent blue reflection nebula IC 4603. This is one of the nearest star forming regions and the intricacies of the dense interstellar dust clouds in the area provide a spectacular display of light and shade; the contrasting hues making this one of the most dramatic and colourful patches of the entire night sky.

Even the brightest parts of this dusty nebulousity is barely noticeable when viewed through large amateur telescopes. This deep exposure brings out the full splendour of the scene and shows the delicately swirling clouds like an expressionist painting on a giant interstellar canvas.

The bright star is 7.9 magnitude SAO184376 which is the main source of light for the blue reflection nebula. The contrasting red areas are primarily illuminated by the red supergiant star Antares, which lies just outside the field of view.
Antares has been referred to as the heart of the scorpion since antiquity, and we now know that it is one of the largest stars in existence.

The dense nebulousity blocks the usual sprawling star fields that are normally seen near the galactic plane. Instead the area is littered with dim reddish stars, which are typically very young T Tauri stars. Such stars are among the youngest visible stars with masses comparable to our Sun. Because they have only recently condensed out of the surrounding molecular clouds their core temperatures are not yet high enough for hydrogen fusion. Instead they are powered by heat released from gravitational contraction, which lasts until the star reaches a density where the fusion process ignites. For these stars this initial stage of stellar evolution takes approximately 100 million years. The process is typically much faster for blue giant stars which evolve and burn their hydrogen at a furious pace before exploding as brilliant supernovae.

Image details:
Date: 6th, 7th, 10th, 27th, 28th, 31st March and 4th, 6th April 2014
Telescope: Homebuilt 12.5" f/4 Serrurier Truss Newtonian
Exposure: LRGB 755:80:75:75 mins, total 16hrs 25mins @ -25C
Camera: QSI 683wsg with Lodestar guider
Filters: Astrodon LRGB E-Series Gen 2
Taken from my observatory in Auckland, New Zealand

gvanhau · Post by **gvanhau** » Thu Apr 17, 2014 3:00 am

IC4592 the Blue Horsehead Nebula
https://www.flickr.com/photos/astro_gvanhau/
Copyright: Geert Vanhauwaert

: Click to view full size image

Here large version: https://www.flickr.com/photos/astro_gva ... 3/sizes/h/

goldpaintphoto · Post by **goldpaintphoto** » Thu Apr 17, 2014 3:04 am

Zodiacal Light, the Milky Way, and myself at Balanced Rock
Copyright: Brad Goldpaint
http://goldpaintphotography.com/

: Click to view full size image

vanamonde81 · Post by **vanamonde81** » Thu Apr 17, 2014 8:10 am

Lunar Analemma
Copyright: György Soponyai

This January my first Solar Analemma project was completed at the bank of river Danube in Budapest, Hungary:

I decided to go on this project by trying to capture the Lunar Analemma curve standing at the same location. I expected photographing the Moon during a whole Lunar month would require at least one or two years due to the terrible astro climate of my country, however the previous month I enjoyed the biggest luck in my life with the clouds.

The Moon needs 27.3 days for completing a revolution around the Earth (sidereal month) and completing a lap in the Analemma curve. But the period of Lunar phases are two days longer: Full Moons occur every 29.5 days (synodic month). By inspecting this image the difference between sidereal- and synodic month is evident: in every point of the Analemma curve the Moon has different phases in different laps.

In the foreground an office building, the Hungarian National Theater, the Palace of Arts and the Eastern pillar of Rákóczi Bridge are visible. This part of the river is frequently used by sight-seeing vessels to turn back to North towards the city center. I chose this foreground photo as the wave of the turning ship slightly resembles the mirrored curve of the Analemma.

The Lunar photos (a wide field and a closeup) were taken between 2014-03-15 and 2014-04-15 in every 24 hours 50 minutes and 48 seconds.
Foreground:
2013-04-09 Canon EOS 5D Mark II + Carl Zeiss Distagon 28/F2.8
F5.6, 1sec, ISO 200

Lunar closeup photos:
Canon EOS 5D Mark II + Canon EF 200/F2.8 L

Sandgirl · Post by **Sandgirl** » Thu Apr 17, 2014 10:20 pm

Kepler astronomers discover new rocky planet that may have liquid water
An article: http://news.sfsu.edu/kepler-astronomers ... quid-water
Credit: Danielle Futselaar (Artist's impression)

: KaneKepler1_story.jpg (103.16 KiB) Viewed 5860 times

Credit: NASA Ames/SETI Institute/JPL-CalT

http://asterisk.apod.com/viewtopic.php?p=224141#p224141

A cross-section of the Universe
Credit: NASA, ESA
An article: http://www.spacetelescope.org/images/heic1408a/

IC2118
Copyrights: Jose F. Hdez

Clouds in Montreal
Copyrights: Mark Mallahan

South Rim of the Grand Canyon
Copyrights: Paul Brand

Mars April 15th 2014
Copyrights: Simon Kidd

Parhelion in Sarasota, Florida
Copyrights: Nikki Kostyun

A Sharp Eye on Southern Binary Stars
Credits: Credit: M. A. Newhouse & NOAO/AURA/NSF
An article: http://www.noao.edu/news/2014/pr1403.php

Conjunction
Copyrights: Mohamed Laaifat

Rothkko · Post by **Rothkko** » Thu Apr 17, 2014 10:22 pm

sol y aves, y III, sunspots 2032 to 2038

: mérida, spain. 2014-04-16

http://asterisk.apod.com/viewtopic.php? ... 46#p224146

Astromontufar · Post by **Astromontufar** » Thu Apr 17, 2014 11:59 pm

https://www.flickr.com/photos/m_acubens/13916678803/

https://www.flickr.com/photos/m_acubens/13887153064

https://www.flickr.com/photos/m_acubens/13887153064

By Sergio Montúfar

Efrain Morales · Post by **Efrain Morales** » Fri Apr 18, 2014 4:13 am

Saturn and the moons Tethys and Enceladus on April 15th, 05:12ut. The moons are located top left of image.

TheAstroShake · Post by **TheAstroShake** » Fri Apr 18, 2014 2:32 pm

Large version on Flickr: https://www.flickr.com/photos/schmitzcory/13913808673/

: Click to view full size image

The Coalsack dark nebula in Crux is an apparently massive and dense complex of dust and gas visible only in the Southern Hemisphere. It's a mind-blowing sight to see in dark skies, and appears as a gaping hole in the Milky Way, bordered closely by the beautiful constellation of Crux, or the Southern Cross.

Captured on a recent astrophotography trip 2014-03-30 in the Karoo Desert of South Africa, near the small town of Sutherland.

Image details:
14x5min ISO800
Canon 5D Mark II, unmodified
Canon 70-200mm f/2.8 lens (at f/3.2 135mm)
Celestron CG5-ASGT, unguided
Calibrated with dark, flat, and bias frames

Software:
Data acquired with BackyardEOS
Calibrated, aligned, and integrated with PIxInsight
Post-processed with PixInsight and Lightroom

TheAstroShake · Post by **TheAstroShake** » Fri Apr 18, 2014 2:35 pm

Large version on Flickr: https://www.flickr.com/photos/schmitzcory/13913808673/

: Click to view full size image

The Coalsack dark nebula in Crux is an apparently massive and dense complex of dust and gas visible only in the Southern Hemisphere. It's a mind-blowing sight to see in dark skies, and appears as a gaping hole in the Milky Way, bordered closely by the beautiful constellation of Crux, or the Southern Cross.

Captured on a recent astrophotography trip 2014-03-30 in the Karoo Desert of South Africa, near the small town of Sutherland.

Image details:
14x5min ISO800
Canon 5D Mark II, unmodified
Canon 70-200mm f/2.8 lens (at f/3.2 135mm)
Celestron CG5-ASGT, unguided
Calibrated with dark, flat, and bias frames

Software:
Data acquired with BackyardEOS
Calibrated, aligned, and integrated with PIxInsight
Post-processed with PixInsight and Lightroom

Thierry Legault · Post by **Thierry Legault** » Fri Apr 18, 2014 11:49 pm

Fantastic passage of the SpaceX Dragon over Paris 25 minutes after launch! Four bright points moving together while crossing the Big Dipper:

Full HD video:

Click to play embedded YouTube video.

Andromeda 2013 · Post by **Andromeda 2013** » Sat Apr 19, 2014 12:37 am

April 17 2014 Sunspots

Canon 450d Full Spectrum DanoMod
Prime on Dobson 12” GGEM-DX
Video 22 fps stacked in Registax

http://www.flickr.com/photos/92681330@N06/

Copyright: Daniel Pasternak

Christoph Puetz · Post by **Christoph Puetz** » Sat Apr 19, 2014 9:46 am

Olw Nebula, M97
http://www.ccdsky.eu
Copyright: Christoph Puetz

: Click to view full size image

Christoph Puetz · Post by **Christoph Puetz** » Sat Apr 19, 2014 9:49 am

Jupiter with Ganymede's Shadow (from 2011)
http://www.ccdsky.eu
Copyright: Christoph Puetz
Location: Peterberg Observatory (http://www.sternwarte-peterberg.de)

: Click to view full size image

Christoph Puetz · Post by **Christoph Puetz** » Sat Apr 19, 2014 9:51 am

Jupiter with Ganymede (reprocessing of 2011)
http://www.ccdsky.eu
Copyright: Christoph Puetz

: Click to view full size image

Starship Asterisk*

Submissions: 2014 April

Re: Submissions: 2014 April

Lunar Eclipse over Maryborough Railway Station

Re: Submissions: 2014 April

NGC 3718

Great Carina Nebula

Re: Submissions: 2014 April

Lunar eclipse from the garden

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Saturn and the moons Tethys and Enceladus on April 15th, 05:

The Southern Cross and Coalsack Nebula

Southern Cross and the Coalsack nebula

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