Starship Asterisk*

Starry Temple
http://www.thewildlifemoments.com/
Copyright: Ivan Pedretti https://www.flickr.com/photos/wildlifem ... ed-public/

The Antlia cluster

Larger image:
http://www.pbase.com/tango33/image/167269986

Thank you,

Kfir Simon

Maggio 2016/Aprile 2018
Località: San Romualdo - Ravenna (Italy)
Tecnosky Apo 130 F/7 su ASA DDM60PRO
CCD QSI 520wsi raffreddato -20
Filtri RGB Astrodon Gen II I-series
Pose non guidate da 3 e 10 minuti
LRGB: L 40x3min, R 26x10min, G 28x10min, B 34x10min.
Acquisizione: MaximDL5 - Correzione cosmetica con Dark, Bias e Flat.
Elaborazione: MaximDL5, Astroart6, AstraImage5, StarTools1.3, Paint Shop ProX9 e Topaz plug-in

Cristina Cellini

Fetus Nebula - NGC 7008

larger images and info:
https://www.astrobin.com/259976/?nc=user

Orion and Aurora
http://www.thewildlifemoments.com/
Copyright: Ivan Pedretti

It's about the season of Scorpius. This is a picture of the dust and gas clouds in the Sco-Oph-Lib borders: This is a mosaic image of 25 panels, with a total of roughly 50 hours of exposures. A slightly larger version (4096x2856) can be found here:
http://group.asiaa.sinica.edu.tw/whwang ... co_Oph.jpg
A zoomable high-resolution version can be found here:
http://www.gigapan.com/embeds/57p7FYXX7Rk/

Copyright: Wei-Hao Wang

Copyrights: Raul Villaverde Fraile
A view of messier 51 and 101 by Raul Villaverde, en Flickr

alcarreño wrote: ↑Wed May 09, 2018 4:24 pm Copyrights: Raul Villaverde Fraile
A view of messier 51 and 101 by Raul Villaverde, en Flickr

This is such a fascinating picture!

It is almost impossible not to compare the size and color of M101 (at upper left) and M51 (below center right) in this picture. M51 looks a lot smaller than M101, even with the "help" of its satellite galaxy, NGC 5195. The apparently small size of M51 might be an illusion, of course, if M51 is much farther away than M101, but according to Wikipedia (here and here), their distances are relatively comparable. So M101 really is considerably bigger than M51, and it doesn't just look that way.

It is also obvious that M101 is a lot bluer than M51, or, to be more precise, there are many more hot bright stars in M101 than in M51.

As a lover of blue stars, I can't help noticing nearby Milky Way B3V-type star Alkaid, end star of the handle of the Big Dipper, shining bright in the middle of the picture! And Mizar and Alcor, the famous "double star" of the Big Dipper, are at top right in the image.

Ann

M16 - Pillars Of Creation

Copyrights : George Chatzifrantzis

Ann wrote: ↑Wed May 09, 2018 6:27 pm

alcarreño wrote: ↑Wed May 09, 2018 4:24 pm Copyrights: Raul Villaverde Fraile
A view of messier 51 and 101 by Raul Villaverde, en Flickr

This is such a fascinating picture!

It is almost impossible not to compare the size and color of M101 (at upper left) and M51 (below center right) in this picture. M51 looks a lot smaller than M101, even with the "help" of its satellite galaxy, NGC 5195. The apparently small size of M51 might be an illusion, of course, if M51 is much farther away than M101, but according to Wikipedia (here and here), their distances are relatively comparable. So M101 really is considerably bigger than M51, and it doesn't just look that way.

It is also obvious that M101 is a lot bluer than M51, or, to be more precise, there are many more hot bright stars in M101 than in M51.

As a lover of blue stars, I can't help noticing nearby Milky Way B3V-type star Alkaid, end star of the handle of the Big Dipper, shining bright in the middle of the picture! And Mizar and Alcor, the famous "double star" of the Big Dipper, are at top right in the image.

Ann

Thanks¡¡¡

I'm glad you like it

Hello,
17 hours of LRGB Ha
ASA10, Moravian 16200 AZeq6
It is a crop of this image https://cdn.astrobin.com/thumbs/ye5EInc ... hqkGbg.jpg
The full is here https://cdn.astrobin.com/thumbs/-JwzgRA ... hqkGbg.jpg

Messier 49 in Virgo

Copyright: Mark Hanson
"M49 is a large elliptical galaxy with a tenuous diffuse tidal shell structure. With a magnitude of 9, it is easily observable by visual observers. It is located 56 million light years away and forms a magnificent if unappreciated galaxy group.

One of the many members of the Virgo Cluster, M49 is a giant elliptical galaxy with a size of 157,000 light years. It is home to an estimated 6000 globular clusters, which seem to be found in greater abundance in elliptical galaxies.

M49 is interacting with the blue dwarf galaxy UGC 7636 below and to the left of it. This is visually illustrated by a diffuse tidal plume to the north of it stretching towards the direction of M49. The tidal plume has a size of approximately 100,000 x 20,000 light years. M49 was also included by the late Halton Arp in his Arp Atlas of Peculiar Galaxies as Arp 134."

Description by "Sakib Rasool"

Take a look at the full size version and exposure details here:
https://www.hansonastronomy.com/messier-49

Thank you,
Mark Hanson

IC1396 and the Elephant's Trunk Nebula

This image was captured with 6 hours of data from Tablemountain near Ellensburg, WA and Goldendale WA. Details are as follows:
Atik 383L+ camera and TMB130ss refractor on an Atlas EQ6. Captured with Sequence Generator Pro and processed with Pixinsight 1.8.05
Luminance 21x10mins = 3.5 Hours binned 1x1
Ha 6x10 mins= 1.0 hr binned 1x1
R 6x5mins= 30 mins binned 2x2
G 6x5mins= 30 mins binned 2x2
B 6x5mins= 30 mins binned 2x2 Highres image is here. Thanks for looking.

Ajay

markh@tds.net wrote: ↑Thu May 10, 2018 5:32 pm Messier 49 in Virgo

Copyright: Mark Hanson

M49Aopdsmall.jpg

"M49 is a large elliptical galaxy with a tenuous diffuse tidal shell structure. With a magnitude of 9, it is easily observable by visual observers. It is located 56 million light years away and forms a magnificent if unappreciated galaxy group.

One of the many members of the Virgo Cluster, M49 is a giant elliptical galaxy with a size of 157,000 light years. It is home to an estimated 6000 globular clusters, which seem to be found in greater abundance in elliptical galaxies.

M49 is interacting with the blue dwarf galaxy UGC 7636 below and to the left of it. This is visually illustrated by a diffuse tidal plume to the north of it stretching towards the direction of M49. The tidal plume has a size of approximately 100,000 x 20,000 light years. M49 was also included by the late Halton Arp in his Arp Atlas of Peculiar Galaxies as Arp 134."

Description by "Sakib Rasool"

Take a look at the full size version and exposure details here:
https://www.hansonastronomy.com/messier-49

Thank you,
Mark Hanson

This is a great image! It is sharp and detailed and beautifully colored, and I had tons of fun comparing your picture with the information I could find on my software.

The galaxy that fascinated me the most is the small blue satellite galaxy interacting with M49, UGC 7636. My goodness me, this small faint galaxy contains a number of really bright clusters! I mean really bright! Compared with the brilliant clusters of UGC 7636, the globulars of M49 are downright hard to find. I'd really love to know more about this small blue galaxy sporting so many brilliant clusters!

Another truly, truly fascinating galaxy in your picture is NGC 4492, the very round galaxy below the striking barred spiral at upper left. NGC 4492 has a nondescript old to intermediate beige disk, then a fascinating blue stellar ring bordered by a very obvious dark dust ring, and then a sunflower-yellow inner bulge, with fine dust lanes winding their way far into the bulge. I love ring galaxies, so this one was a delightful find for me. Tell me though, is that pink splash in the yellow bulge of NGC 4492 really an emission nebula, or is it a photographic effect?

In any case, you have produced a really great and highly resolved picture of a rarely photographed group of galaxies in Virgo, and I thank you very much for that!

Ann,

Thanks, I'm not really sure about the NGC 4492, I spend some time to make sure i didn't blow out this galaxy. I worked hard on keeping it true and bringing out the detail. Here is a closer view.
Thank you,

Mark

Scorpion - The King
www.astromarcin.pl
Copyright: Marcin Paciorek
Better res:
http://astromarcin.pl/images/aaa2017/Mi ... 7_half.jpg

Derwent Reservoir is the middle of three reservoirs in the Upper Derwent Valley in Peak District National Park, England.
This is an 180° panorama of the Derwent Dam at the south end of the reservoir with the Milky Way arching above the still water.

Elephant's Trunk Nebula IC1396A (c-sho).
http://ram.org/images/space/scope/1.7.4 ... .v0221.jpg

Total integration: 660 minutes/11 hours (48 x 5m for S2/red + 36 x 5m for Ha/green + 48 x 5m for O3/blue).
Camera: QHY163M (16mp mono) CMOS cooled to -15 degrees C.
Telescope: Takahashi FC100DF Steinheil fluorite doublet apochromat refractor @ f/4.9.
Reducer: Takahashi FC-35 2".
Mount: Paramount MyT.
Filters: Astrodon 5nm Ha, 3nm O3, 3nm S2.
Software: Sharpcap, PixInsight, Nebulosity, Photoshop CC.

Full resolution image of the above thumbnail: http://ram.org/images/space/scope/1.7.4 ... .v0221.jpg
Full resolution original SHO image prior to the palette modification: http://ram.org/images/space/scope/1.7.4 ... ho.v01.jpg

https://www.astrobin.com/346620/
http://ram.org/ramblings/cosmos/

Hello,
A 8 hours SHO
ASA10, Moravian 16200, AZEq6
MaximDL, Maxpilot, Pixinsight, Photoshop
The full is here https://cdn.astrobin.com/thumbs/IQ28sf2 ... hqkGbg.jpg

Hello!
This image shows Venus above river Tisza and the Tiszalök Hydropower Plant in Hungary short after sunset.
Nikon D5300
Nikkor AF-P DX 18-55 mm f/3.5-5.6 VR II kit lens @ 55mm
5 sec
f/5.6
ISO 800 Full resolution image: https://drive.google.com/open?id=11Ocyu ... aEU3eu4jZ_

Hello,
A 15 hours SHO of last year recently reprocessed.
ASA10, Moravian 16200, AZEq6
The full is here https://cdn.astrobin.com/thumbs/13TpsNF ... hqkGbg.jpg

The Milky Way rising behind the seeing monitor at Paranal Observatory. This monitor measures how the atmospheric turbulence blurs the shape of the stars (the so called “seeing”), and it’s an essential tool in Paranal to schedule observations. Some observations are very demanding and require very stable atmospheric conditions, whereas others can be done with bad seeing. This monitor gives us the seeing every several seconds; that way we can decide on the fly which observations have higher priority, thus making an efficient use of the observing time. Canon 6D + Rokinon 24 mm at f/2, 20 sec, ISO 3200.

Seeing monitor at Paranal Observatory by Juan-Carlos Munoz-Mateos, on Flickr

Objects: IC4592 and IC4601

Image Credit: Nico Carver

Description: IC4592 aka the Blue Horsehead Nebula is a brilliant and large reflection Nebula in Scorpius. It is a cloud of interstellar dust lit by the septuple star system we call Jabbah (or Nu Scorpii) that makes up the eye of the Horsehead. I captured this image at the Delmarva Stargaze star party with my new Stellarvue SVQ86 and an unmodified Canon 5D DSLR.
Resolution: 5621x3567
Integration: 2.0 hours (24x 5 minutes)
SQM: 20.5

Image:


Full resolution image and more details on my website here: http://www.nebulaphotos.com/ngc-ic/ic4592/

The very thin lunar crescent at the precise moment of the New Moon, today May 15 from Normandy at 11h48m UTC!
http://www.astrophoto.fr/nm_180515.jpg

The separation from the Sun being only 5°, the sky was extremely bright and I had to:
- use an infrared filter to decrease the blue of the sky
- combine the 4800 video frames taken during 1 minute
- place in front of the telescope a maks protecting it from the direct sunlight
- aim the telescope to the Moon with an automatic pointing system (GOTO)
More details: http://www.astrophoto.fr/new_moon_2018may15.html

M101 and NGC5474

Autor: Álvaro Ibáñez Pérez
Website: www.aipastroimaging.com

Full resolution:
https://aipastroimaging.com/wp-content/ ... lution.jpg