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Re: Submissions: 2017 April

Posted: Thu Apr 20, 2017 12:45 am
by j.s.ebersole
IC 2948 Core of the Running Chicken Nebula
http://jebersol.zenfolio.com/
Copyright: John Ebersole
Click to view full size image
The famous Thackeray’s Globules are seen here amidst an aurora-like backdrop of ionized Ha, OIII, and SII in this narrowband image in HST palette.

Asteroid JO25 2014

Posted: Thu Apr 20, 2017 4:33 pm
by Greg Parker
Copyright Prof. Greg Parker 2017

9 x 5-minute subs with a 1-minute gap between subs taken on a Sky 90 and M26C OSC CCD at the New Forest Observatory.
Asteroid JO25 2014 moving through Canes Venatici with bright central star SAO 63514 for reference.
Click to view full size image

2014 JO25

Posted: Thu Apr 20, 2017 7:19 pm
by jfgout
Asteroid 2014 JO25 was the big star yesterday. I recorded it, moving fast across the sky (about 1 degree per hour) with a simple 80mm refracting scope and a CCD camera on an equatorial mount. Thanks to its brightness, it was fairly easy to capture with basic amateur equipment, even from the light-polluted skies of Bloomington.
Images are 5 seconds exposure each. 254 images total taken between 2h15 and 2h45, April 20th (UTC). The relatively bright star in front of which the asteroid passes (although there was probably no real occultation from my location) is HIP 64077 in Coma Berenice, an anonymous star which could barely be seen to the naked eye under exceptionally dark skies (magnitude 6.2).

While one telescope was recording the images, I observed the asteroid visually with an 8-inch SCT. The asteroid appeared as a faint but clear visible 'moving star' in the light-polluted skies of Bloomington (Indiana). Motion was easy to see every time the asteroid passed by a nearby star. I managed to show the asteroid to 5 of my friends, big success!

The animation as a GIF:
Image

And as a video on youtube :
Click to play embedded YouTube video.
Clear skies!

jf

Re: Submissions: 2017 April

Posted: Thu Apr 20, 2017 8:43 pm
by Sandgirl
Comet C/2015 V2
Copyrights: Ashley Marando
Larger size: http://www.astrobin.com/full/290571/0/
unnamed_jpg.jpg
Spaghetti Nebula, Sh2-240
Copyrights: Rick Thurmond
unnamed (1)_jpg.jpg
Monkey Head Nebula
Copyrights: Justin Tilbrook
monkey best_small.jpg
C/2015 ER61 Panstarrs Montage
Copyrights: Justin Tilbrook
ER61 Panstarrs3_small.jpg
Heart Nebula, When the Universe Falls in Love
Copyrights: Miguel Claro
HeartNebula-12Lights-DSACumeada-wp-net_small.jpg
Earth shadow
Copyrights: Majid Ghohroodi
IMG_6588 Panorama_small.jpg
Galactic lighthouse
Copyrights: Jorge Alonso Presa
unnamed.jpg
IFN Surrounding M81 & M82 Galaxies
Copyrights: Terry Hancock
Larger version: https://www.flickr.com/photos/terryhanc ... otostream/
unnamed_jpg.jpg
ISS occultation by Dandelion
Copyrights: David de Cuevas
20170403_ISS et le Pissenlit_small.jpg
Seagull and Thor's Helmet
Copyrights: Pierre Fauchet
mouette thor_small.jpg
The PILOT experiment under the Australian Sky
Copyrights: Gabriel Foenard
unnamed (1).jpg
Late March Milky Way
Copyrights: Giorgio Pavan
unnamed (2).jpg
ARP 238
Copyrights: Domingo Pestana
ARP 238 - Domingo Pestana_small.jpg
M51
Copyrights: Rodd Dryfoos
LRGB-NoMD-L37-3ba2_small.jpg
Antennae Galaxies from Hacienda Los Andes in Chile
Copyrights: Annette Manz
Antennae_Galaxies _small.jpg
M101 Galaxy in Ursa Major
Copyrights: Tibor Pósán
m101új jpgfek_small.jpg
A Roof Full Of Stars
Copyrights: Amirreza Kamkar
Deyr  Gachin8_Caravansaru_Fulldome_small.jpg
IC 405 and IC 410 in Auriga
Copyrights: Steve Cooper
RZ_IC_405AND410c_small.jpg
Polar star above the Park of souls
Copyrights: Zachos Gkiotsalitis
unnamed (3).jpg
Anticrepuscular rays and the Moon from Brasilia, Brazil
Copyrights: Paulo Cacella
IMG_2703_small.jpg
Celestial X (ISS and a Boeing 757-230)
Copyrights: Tamas Ladanyi
iss_170401_ladanyi_web.jpg
C/2015 ER61
Copyrights: Fritz Helmut Hemmerich
Larger size: https://www.flickr.com/photos/fhhemmeri ... /lightbox/
33807148611_bb8cecd54a_z.jpg
M101 from Fagagna, Italy
Copyrights: Marco Cosmacini
M101_LRGB_HDR_small.jpg
Comet C/2015 ER61 with NGC 6325
Copyrights: Damian Peach
c2015er61_2017_02_16dp_small.jpg
M97 M108 41P/Tuttle-Giacobini-Kresak
Copyrights: Bret W
unnamed (4).jpg
The Moon, Jupiter & moons
Copyrights: Adolfo Miranda
_AMB5797moon, jupiter and moons_jpg.jpg

Asteroid JO25 2014 annotated B&W version

Posted: Fri Apr 21, 2017 3:54 pm
by Greg Parker
Copyright: Prof. Greg Parker 2017

Asteroid JO25 2014 captured at the New Forest Observatory with a Sky 90 refractor and an M26C 10-Megapixel OSC CCD.
Image annotated and shown in negative B&W to clearly show the asteroid trajectory.
Click to view full size image

Re: Submissions: 2017 April

Posted: Fri Apr 21, 2017 10:03 pm
by KuriousGeorge
Heron Galaxy. Copyright KG Observatory.

Imaging camera: QSI 660 WSG
Mount: Losmandy G-11
Guiding camera: Starlight Xpress Ultrastar
Focal reducer: Celestron 0.7X
Software: PixInsight 1.8, PHD Guiding 2, Neat Image V7, Sequence Generator Pro, Maxim DL6, Adobe Photoshop CC 2014
Filters: Astrodon 1.25" R, Astrodon 1.25" B, Astrodon 1.25" G, Astrodon 1.25" L
Accessories: Innovations Foresight ONAG SC, Optec FocusLock, Starizona MicroTouch Autofocuser
Resolution: 912x942
Dates: April 2, 2017, April 5, 2017, April 20, 2017
Frames:
Astrodon 1.25" B: 69x120" -20C bin 1x1
Astrodon 1.25" G: 59x120" -20C bin 1x1
Astrodon 1.25" L: 191x120" -20C bin 1x1
Astrodon 1.25" R: 56x120" -20C bin 1x1
Integration: 12.5 hours
Darks: ~20
Flats: ~20
Flat darks: ~20
Bias: ~20
Avg. Moon age: 12.27 days
Avg. Moon phase: 45.89%
Mean SQM: 19.75
RA center: 209.649 degrees
DEC center: 37.435 degrees
Pixel scale: 0.642 arcsec/pixel
Orientation: 179.186 degrees
Field radius: 0.117 degrees
Locations: Home, Rancho Santa Fe, California, United States

Re: Submissions: 2017 April

Posted: Sat Apr 22, 2017 3:44 pm
by Stormchaser
2016 Solar Analemma (and a Half) over The Outer Hebrides

Copyright: Giuseppe Petricca
Giuseppe-Petricca-Analemma16_logo1_1492874958[1].jpg
http://0e33611cb8e6da737d5c-e13b5a910e1 ... 874958.jpg

In the composition (a six shot panoramic for the background and 56 different solar pictures) we can clearly see two solar analemmas pictured respectively in the early and middle morning. The immediate thought goes to the morning figure (the one on the left) which is complete only for the upper summer half, as a proof of the long dark nights here in the upper latitudes.

An experiment that I wanted to try, and that I can surely say has been a success, even if the doubling of everything to capture the two figures is a workload to consider. And the weather surely made all this year long adventure like a lottery win in the end!

This strange figure, with a shape of an 8 or an infinite, the analemma, is caused by the axial tilt of our planet, and by the elliptical shape of our orbit around the Sun. If we take a picture day by day, always at the same hour, the Sun is not in a fixed position, but it slowly climbs up and then down the curve.

Canon EOS 700D - 18 mm Lens - 6 Shot Panorama Background - 56 Solar Pictures - Lightroom CC - Photoshop CC
Stornoway - Outer Hebrides - Scotland

Re: Submissions: 2017 April

Posted: Sat Apr 22, 2017 5:33 pm
by Fede (Iko)
41P/Tuttle-Giacobini-Kresak and Lyrid meteor.

Image

Full http://nomadaenlanoche.com/images/full- ... fullhd.jpg

Re: Submissions: 2017 April

Posted: Sat Apr 22, 2017 6:13 pm
by stringdom42
Image
Three Views of Titan by Val Klavans, on Flickr

On the upper left is a composite of images taken through three filters that are sensitive to red, green and blue light. It shows what Titan looks like to the human eye. The image on the upper right was taken in an infrared filter to see to Titan's surface. On the bottom is a false color view of Titan. It is a composite of images taken through three filters that are sensitive to infrared, methane band, and ultraviolet light. In the infrared and false color views, darker areas are vast hydrocarbon sand dunes and seas. Titan's largest sea, Kraken Mare, is visible in the north polar region.

All images taken by the Cassini spacecraft on April 18, 2017 & processed by Val Klavans

Re: Submissions: 2017 April

Posted: Sun Apr 23, 2017 12:08 pm
by SteveJ
Aurora Australis from 38 degrees south
IMG_0493.JPG
Taken from Noojee, Victoria, Australia on 22 April 2017

Re: Submissions: 2017 April

Posted: Sun Apr 23, 2017 2:24 pm
by sternklar
Messier 78 with part of Barnard's Loop, Namibia, Sept. 02 - 04 2016

http://www.sternklar.ch/images-webpages ... ept-16.htm

Exposure data:
Takahashi TOA 150/1100 APO-Refractor @ f/5.6 with SBIG STL-11000M. Exposure time: 35 x 5 minutes trough Baader RGB-filters.

Copyright: Manuel Jung, http://www.sternklar.ch
Click to view full size image

Re: Submissions: 2017 April

Posted: Sun Apr 23, 2017 5:42 pm
by ildiora
Oneiric Star Trail
dariogiannobile.com
Copyright: Dario Giannobile
Click to view full size image
It is a composite image done by means of two different techniques: Infrared shooting + and star trail. The shots comes from the same camera, in the same location, at the same focal length and same position but at two different times of the day: mid-day and night.

As many infrared images, the final effect is to have a white color in the greens with the sky, and the rest, shading towards blues. This is the perfect color grading to add a star trail.
The final effect is an oneiric image picturing the dawn of Orion constellation behind the mountains in the background from an old farmhouse courtyard.

Dario G.

Re: Submissions: 2017 April

Posted: Sun Apr 23, 2017 9:06 pm
by Sandgirl
Carina Nebula
Copyrights: Paulo Cacella
etacar_small.jpg
Summer Milky Way rising over the magnificent Organ Mountains
Copyrights: Rick Young
Organ Milky Way 2017-04-03_small.jpg
STS 130 Launch
Copyrights: Raymond "Lee" Marr III
unnamed.jpg
Orion and Uyuni salt flats
Copyrights: Ziyi Ye
Orion and Uyuni salt flat_small_small.jpg
ISS lunar transit
Copyrights: Michael Seeley
ISSTransit_Seeley-1_small.jpg
The boogieman
Copyrights: Manjeet Singh
ngc7000_st2.jpg
Eye of God
Copyrights: Hower Ji
Eye of God_small.jpg
Messier106 and NGC4217
Copyrights: Péter Feltóti
Messier106_NGC4217_small.jpg
Comet 73P on April 9th
Copyrights: Damian Peach
73p_2017_04_09dp.jpg
Moon, Jupiter and the Galilean moons
Copyrights: Göran Strand
GS_20170410_MoonJupiter_7435.jpg
Day Milky Way over Nariga Lighthouse in Malpica
Copyrights: Ana García
Via lactea Nariga Apod_small.jpg
Opposition of Jupiter
Copyrights: Marco Guidi
2017-04-08-2304_8-Marco Guidi-RGBps_jpg.jpg
Full Moon
Copyrights: James Langley
unnamed_jpg.png
NGC2903
Copyrights: Bernard Miller
NGC2903_PS4_CROP_FULL_small.jpg
Moon
Copyrights: Divyadarshan Purohit
Moon.JPG
Moon - Jupiter Conjunction
Copyrights: Uğur İkizler
Ay_jüpiter_yakınlaşma_ps_2_jpg.jpg
M82
Copyrights: Patrick Gilliland
33919803586_a0f2bd821a_k_small.jpg
Heart and Soul nebula circumpolar composition
Copyrights: Jose Jimenez Priego
IC 1848 & IC1805  - The Soul and Heart Nebulae Circumpolar-2_small.jpg
Keyhole Nebula / Eta Car
Copyrights: Dylan O'Donnell
unnamed (1).jpg
Full Moon
Copyrights: Toni Sendra
apd_small.jpg
NGC 3628 - The Hamburger Galaxy
Copyrights: Eric Coles
NGC3628_HLRGB 2_small.jpg

Re: Submissions: 2017 April

Posted: Sun Apr 23, 2017 9:34 pm
by avdhoeven
Image

A soap bubble and its neighbour... by Andre van der Hoeven, on Flickr



The "Soap Bubble Nebula" is the common name for the planetary nebula PN G75.5+1.7. This nebula was only discovered by amateur astronomer Dave Jurasevich on July 6th, 2008. It was independently confirmed and reported by Keith Quattrocchi and Mel Helm on July 17th, 2008.
 
PN G75.5+1.7 is situated in the constellation of Cygnus, very near the Crescent Nebula (NGC 6888). It is embedded in a large diffuse nebula which, in combination with its low surface magnitude, is the reason it was not discovered until recently.
 
NGC 6888, also known as the Crescent Nebula, is a cosmic bubble about 25 light-years across, blown by winds from its central, bright, massive star. This image uses narrow band image data that isolates light from hydrogen and oxygen atoms in the wind-blown nebula. The oxygen atoms produce the blue-green hue that seems to enshroud the detailed folds and filaments. Visible within the nebula, NGC 6888's central star is classified as a Wolf-Rayet star (WR 136). The star is shedding its outer envelope in a strong stellar wind, ejecting the equivalent of the Sun's mass every 10,000 years. The nebula's complex structures are likely the result of this strong wind interacting with material ejected in an earlier phase. Burning fuel at a prodigious rate and near the end of its stellar life this star should ultimately go out with a bang in a spectacular supernova explosion. Found in the nebula rich constellation Cygnus, NGC 6888 is about 5,000 light-years away. (source: APOD)
 
I decided in 2015 that I wanted to see if I could catch this very faint nebula with my 9.2 cm refractor. I started working on imaging this in 2015, but then I only got 4 images before weather interrupted the imaging sequence. It was only in 2016 that I was able to catch more data of this region to see what would come out. In August 2016 I took for 5 days in a row images of this nebula in H-alpha, OIII and RGB.
 
Equipment:
 
Telescope: TMB92SS
Camera: QSI583ws
Mount: Skywatcher NEQ6
 
Exposures:
 
H-alpha: 39x900s (10h)
OIII: 32x1200s (11h)
RGB: 18x300s R, 12x300s B,G (3h)
 
Total: 24 hours

Re: Submissions: 2017 April

Posted: Mon Apr 24, 2017 1:57 am
by robdickinson
Aurora from Akaroa, Saturday 22nd April.

ImageAkaroa Aurora by Rob Dickinson, on Flickr

Re: Submissions: 2017 April

Posted: Mon Apr 24, 2017 12:23 pm
by astromazzo
Comet C/2015 V2 (Johnson) 20" Ritchey-Chrètien F/4.2 STL6303E LRGB 40 minutes - 18 April 2017
by Dr Paolo Candy - Ci.A.O. - Italy

Re: Submissions: 2017 April

Posted: Mon Apr 24, 2017 12:26 pm
by astromazzo
Comet 41P/Tuttle-Giacobini-Kresak 20" Ritchey-Chrètien F/4.2 STL6303E LRGB 20 minutes - 17 March 2017
by Dr Paolo Candy - Ci.A.O. - Italy

Re: Submissions: 2017 April

Posted: Mon Apr 24, 2017 2:00 pm
by kokehtz
Markarian's Chain
Copyrights: Álvaro Ibáñez Pérez

From Pioz, Guadalajara, Spain. April 21, 2017.

Full resolution:
https://c1.staticflickr.com/3/2941/3419 ... aa98_o.png

Image

Re: Submissions: 2017 April

Posted: Mon Apr 24, 2017 4:40 pm
by Sandgirl
Black Hawk helicopter silhouetted against full Moon
Copyrights: Atle Bjanes
Moon and Black Hawl Helicopter.jpg
NGC4565 Needle Galaxy
Copyrights: Artūras Medvedevas
58ea59654989d57c2feacac8_jpg.jpg
The Milky Way within reach
Copyrights: Petr Horálek
2016_04_04_Stones_Paranal_Touching_Sky_1500px_jpg.jpg
Waterloo researchers capture first “image” of a dark matter web that connects galaxies
Image credits: S. Epps & M. Hudson / University of Waterloo
An article: Waterloo researchers capture first “image” of a dark matter web that connects galaxies
Hudson_figure-v4.jpg
http://asterisk.apod.com/viewtopic.php?t=37071

Hale-Bopp 20th Anniversary
Copyrights: Vicente Aupí
Hale-Bopp_small.jpg
Hale-Bopp+M31+DC.jpg
Sun meets Red Fort Delhi
Copyrights: Abhinav Singhai
Sun meets Red Fort.jpg
NGC2264
Copyrights: Jose Mtanous
NGC2264_scnr_80pct_small.jpg
NGC 253 Galaxy - Great Spiral Galaxy
Copyrights: Francesco Badalotti
NGC 253 Galaxy_jpg.jpg
Boston "Pink" Moonrise
Copyrights: Chris Cook
boston-moonrise-41117.jpg
Orion Panorama
Copyrights: Terry Hancock
M42_B33_M78_QHY367_135x120_RGBTerry Hancock50v2_small.jpg
Northern Lights from Iceland
Copyrights: Gísli Mar
Green-Arch_small.jpg

Re: Submissions: 2017 April

Posted: Mon Apr 24, 2017 8:49 pm
by Sandgirl
Eta Carinae
Copyrights: Eduardo Schaberger Poupeau
Eta-carinae-apod_small.jpg
M51
Copyrights: Rodd Dryfoos
A1A1M51.jpg
Moon Rise behind DingDuGe
Copyrights: Steed Yu & NightChina.net
unnamed.jpg
M8, Lagoon Nebula
Copyrights: Diego Colonnello
m8 core final_small.jpg
M12 Globular Cluster in Ophiuchus
Copyrights: Madhup Rathi
M12_small.jpg
M97 - Owl Nebula
Copyrights: Madhup Rathi
M97_small.jpg
A different shadow play
Copyrights: Tunç Tezel
HalmhrEclipse360_small.jpg
Globular Cluster M71
Copyrights: Ronald Brecher
M71 6hr15m RGB Feb 2017_small.jpg
Sh2-98 Emission Nebula
Copyrights: Ronald Brecher
sh2-98 10hr40m HaRGB April  2017_small.jpg
Kitt Peak from Mt. Lemmon
Copyrights: Andre Cruz
unnamed (1).jpg
IC 2169 (blue reflection nebula) and surroundings
Copyrights: Jeff Johnson
IC2169_29Jan17_75_web.jpg
Aurora Over Lake
Copyrights: Mehdi Momenzadeh
unnamed (2).jpg
Converging shadows
Copyrights: Eric Augusteijn
Shadows_Eric Augusteijn_small.jpg
Startrails
Copyrights: Bitarnote
FB_IMG_1487011451477.jpg
NGC 2442 - Meathook Galaxy
Copyrights: Annette Manz
Meathook Galaxy_small.jpg
Milky Way and Iridium Flare
Copyrights: Jorgelina Alvarez
meteoroface epod_small.jpg
The Edge of Space
Copyrights: Jonathan Zaharek
DSC_9511_small.jpg

Re: Submissions: 2017 April

Posted: Tue Apr 25, 2017 12:29 am
by damian.j.avila
Una panorámica del cielo pampeano
https://www.facebook.com/lanocheysuencanto/
Copyright: Damián Avila

Re: Submissions: 2017 April

Posted: Tue Apr 25, 2017 10:57 am
by Juan Lozano
Milky way Core next to Saturn
http://observatorioelche.blogspot.com.es
Copyright: Juan Lozano de Haro
Click to view full size image

Re: Submissions: 2017 April

Posted: Tue Apr 25, 2017 11:43 am
by SteveJ
Galactic core, meteor and Venus
Copyright: Steve Johnston
Cape Conran meteor.jpg
Taken from Cape Conran, Victoria, Australia on 2 October 2013.
Single 60s exposure on tracking mount,14mm f/2.8, IO-1600.

Re: Submissions: 2017 April

Posted: Tue Apr 25, 2017 12:03 pm
by IO_12
Ion tail of the comet C/2015 V2 (Johnson) now clearly visible
Comet C/2015 V2 (Johnson) on April 24th 2017

Copyright: Velimir Popov, Emil Ivanov @ Irida Observatory
Click to view full size image
More info and hi-res images on website

Re: Submissions: 2017 April

Posted: Tue Apr 25, 2017 3:35 pm
by GeraldRhemann