Starship Asterisk*

Ann wrote: ↑Thu Nov 08, 2018 6:24 pm

Maicon Germiniani wrote: ↑Tue Nov 06, 2018 10:16 am Carinae Nebula
[img3]Eta Carinae LRGB by maicon germiniani, no Flickr[/img3]

I'm very glad to see a splendid RGB image of a nebula here!

Ann

Thanks Ann.
I consider this my best image.
Please look my gallery on Flickr. Maicon Germiniani
Hugs from Brazil

Running Man Nebula
[img3]Running Man by maicon germiniani, no Flickr[/img3]

Mars crossing the Lagoon
NBRGBCombination-3 by BenGodosn, on Flickr
www.godastro.uk
Copyright: Benjamin Godson

This is an image from around March of this year of Mars in conjunction with the Lagoon and triffid nebulae

IC 434 HORSEHEAD Always eluded me till recently as its really not in a great position in my back garden obs, being surrounded in that part of the sky by neighbors roof . So i managed several short spells and so far have captured just 2 hours each in O3 and Ha alpha, i put together as a bi color image though with S Green
FLT 98 APO SXV 694 mono CCD -10 degree
NEQ6 R pro mount

Moon through a professional telescope by Juan-Carlos Munoz-Mateos, on Flickr

Orion's Pinnacle Throne by Transient Astronomer, on Flickr


Orion's Pinnacle Throne (Annotated) by Transient Astronomer, on Flickr

Images Credit and Copyright Tom Masterson

While starting to image NGC2392 (Eskimo Nebula), I noticed a faint blur to its southeast. Turned out to be comet 38P/Stphan-Oterma.

Later, upon reviewing the GIF I had created, I found several asteroids in the vicinity, most notably Asteroid (45234) 1999 XA228.

It turned out to be a lively image and another example of how really dynamic our universe is.

M 16

SHORGB : full size : http://www.cielboreal.com/galerie/photo88f.jpg

HOORGB : full size : http://www.cielboreal.com/galerie/photo88fb.jpg


done with CDK20, Moravian G4-16000 on Paramount ME2 near Actacama Desert in Chile, El Sauce Observatory

http://www.cielaustral.com
Copyright: Team CielAustral with J.C CANONNE, N.OUTTERS, P. BERNHARD, D. CHAPLAIN & L. BOURGON

WJShaheen wrote: ↑Tue Nov 13, 2018 11:29 pm While starting to image NGC2392 (Eskimo Nebula), I noticed a faint blur to its southeast. Turned out to be comet 38P/Stphan-Oterma.

Later, upon reviewing the GIF I had created, I found several asteroids in the vicinity, most notably Asteroid (45234) 1999 XA228.

It turned out to be a lively image and another example of how really dynamic our universe is.

That's a great image! The comet really moves in it!

Ann

SpookyAstro wrote: ↑Tue Nov 13, 2018 10:19 pm Orion's Pinnacle Throne by Transient Astronomer, on Flickr

Images Credit and Copyright Tom Masterson

That's a great image and a fantastic composition. The pinnacles do indeed create a "throne" shape, with the pinnacles as armrests. Behind them, green sky steamers seems to fall from the outer edges of the picture down into the seat of the throne. And above it all, the glorious winter Milky Way seems to fall into (or rise out of) the same throne, sparklingly pink and blue.

What a great image!

Ann

NGC300 and galaxy cluster CL0053-37 (From the measured redshift (z = 0.1625), a distance of about 2.1 billion light-years is deduced!!!):

NGC300 by Juan Filas, en Flickr

Cluster of Galaxies CL0053-37 by Juan Filas, en Flickr

M78:

M78 by Juan Filas, en Flickr

copyright: Juan Filas

Three Giant Leaps

Image Credit & Copyright: Mark Hanson
Labeled Version
Description by Brian Ottum

Three different objects in this image demonstrate the immensity of the known universe. The bright star is 16 Piscium, located just 100 light-years from Earth, within our home Milky Way galaxy.

The pair of interacting galaxies (Arp 284) are a thousand times further away than the bright star, 100 million light-years from Earth.

Finally, the tiny blue quasar's (B2333+019A) & (B2334+019A) are a hundred times further away than the pair of galaxies at 10 and 11 billion light-years from Earth.

The 3 different objects demonstrate the immense power of gravity.

1. The bright star creates light through gravity-generated fusion.

2. Gravity is pulling the pair of galaxies Arp 284 also known as (NGC 7714 and NGC 7715) toward each other, gradually tearing them apart in the process.

3. Finally, 2 separate super massive black holes have so much gravitational pull that it is vacuuming up its host galaxy, allowing only an extremely bright jet of light (the 2 quasars) to escape and be blasted towards Earth.

We are seeing light that started its journey when the universe was relatively young at just 3 billion years old.

Full Resolution image can be found here:

https://www.hansonastronomy.com/arp-284-quasars

Thank you for looking,

Mark Hanson

markh@tds.net wrote: ↑Thu Nov 15, 2018 1:50 am Three Giant Leaps

Image Credit & Copyright: Mark Hanson

Arp284FinalApodsmall.jpg

Labeled Version

Crop Labels.jpg

Description by Brian Ottum

Three different objects in this image demonstrate the immensity of the known universe. The bright star is 16 Piscium, located just 100 light-years from Earth, within our home Milky Way galaxy.

The pair of interacting galaxies (Arp 284) are a thousand times further away than the bright star, 100 million light-years from Earth.

Finally, the tiny blue quasar's (B2333+019A) & (B2334+019A) are a hundred times further away than the pair of galaxies at 10 and 11 billion light-years from Earth.

The 3 different objects demonstrate the immense power of gravity.

1. The bright star creates light through gravity-generated fusion.

2. Gravity is pulling the pair of galaxies Arp 284 also known as (NGC 7714 and NGC 7715) toward each other, gradually tearing them apart in the process.

3. Finally, 2 separate super massive black holes have so much gravitational pull that it is vacuuming up its host galaxy, allowing only an extremely bright jet of light (the 2 quasars) to escape and be blasted towards Earth.

We are seeing light that started its journey when the universe was relatively young at just 3 billion years old.

Full Resolution image can be found here:

https://www.hansonastronomy.com/arp-284-quasars

Thank you for looking,

Mark Hanson

That is utterly amazing!!!

As a color commentator, I had to "color diagnose" the bright star and the galaxies and apply my amateur diagnosis on the color of the quasars.

The star, 16 Psc, is an F6V type of star, and it is a bit bluer than the Sun. If it were to replace the Sun in the Solar system, it would pretty much instantly kill us because it is four times brighter and a lot more ultraviolet than the Sun. But just before we passed out, we might be able to notice that, yes, it does appear to be about this shade of blue-white to our G-type Sun-adapted eyes. So the color of the star is fine!

As for the galaxies, NGC 7714 and NGC 7715, my software Guide, quoting Principal Galaxy Catalog, claims that the B-V color of NGC 7714, the face-on galaxy, is as blue as 0.520. That is really quite blue for a galaxy, and I don't think that the galaxy looks as blue as that in your picture. NGC 7714 has a bright and reddish inner disk and a non-starforming bright outer arc-shaped arm of an intermediate color. To produce an overall "galaxy light" that is as blue as 0.520, even though the galaxy contains such a large number of old yellow stars, those brilliant blue stars of NGC 7714 had better be very blue indeed. Perhaps there are a lot of brilliant blue stars hidden in the glaring light of the nucleus?

Well, The Principal Galaxy Catalog got one thing right. NGC 7714 is really quite blue, but it is tremendously ultraviolet! That is exactly what you would expect from a galaxy with a tremendous burst of star formation superposed on a relatively large and bright old yellow population.

NGC 7715, the edge-on galaxy, has a bluer B-V index than NGC 7714. To me NGC 7715 in your picture appears to lack an old yellow population altogether!

Finally, the quasars. Their blue color is due to highly redshifted extremely energetic far ultraviolet light produced by the accretion disks of the supermassive black holes. I once saw a sequence of pictures showing what apparent color you would expect from quasars at different redshifts, and if I remember correctly, quasars at a distance of 10 and 11 billion light-years would still display a bluish B-V index if we measured their light from the Earth.

What a fantastic picture! Thank you!

Ann

Colourful Olives and Stars
Copyright: Tunç Tezel
http://www.twanight.org/newTWAN/photos.asp?ID=3005808

The Pacman Nebula NGC281 – Hubble Palette
Full Resolution:
http://www.astrobogdan.pl/wp/wp-content ... koniec.jpg

Paramount MyT, TEC140/5,2 QHY 695A
Exposures: 21,25h 25x900s, Ha: 38x 900s, OIII: 22x900s (binx1)
11.2018 Ochojno, Poland
www.astrobogdan.pl
Bogdan Jarzyna

NGC 253 - The Sculptor Galaxy
http://www.azstarman.net
Copyright: Bernard Miller
This is an image of NGC253, also known as the Sculptor Galaxy. It is a spiral galaxy about 11 million light years away in the constellation Sculptor. It is a starburst galaxy which means it is undergoing a period of intense star formation. The image data was captured by Martin Pugh and processed by me (Bernard Miller).

NGC 7331 Galaxy
Copyright: Francesco di Biase
www.astropixel.it
This is a shot taken under on average good sky from the Apulian countryside in south Italy, with my personal traveller setup.
Setup: RC12" f/8 2430mm - CCD KAI4022 - Active Optic Sx - iOptron CEM120 mount. All 9*900" Luminance frames was taken in binning 1x1 and 0.63"/pixel resolution, RGB (6*500" each channel) was taken in binning 2x2.
Data captured and processed by me.

NGC7331 Galaxy in Pegasus by Francesco di Biase, su Flickr

Colourful, full moon
www.astronomica.es
Copyright: Jaime Fernandez
This is my very first colourful image of the Moon. Each colour represent different mineralogy: silicates, titanium, iron, and other.
It is an RGB image obtained with a simple DSLR camera, combined with the luminance of a monochrome mosaic image from a DMK camera.

I would like to thank M. Alain Paillou for his help to discover the secrets of lunar colour image processing techniques.


In memory of that master geologist who taught me that the Moon is much more interesting than I ever imagined.

Moon-Mars conjunction
Copyright: Steve Johnston Taken from Melbourne, Australia on 16 November 2018. Composite image, Canon 6D, Sigma 180m lens, 1/100s F/8 ISO-100 for Moon and 1s f/4 ISO-1600 for Mars, merged and cropped in Photoshop. Closest separation was 1.1° during daylight hours approximately 7 hours earlier.

M 78 - captured in my observatory near Kiev, Ukraine by 350 mm Newton.
Full size - https://www.flickr.com/photos/132752244 ... ed-public/

Star_Digger wrote: ↑Mon Nov 19, 2018 9:34 am M 78 - captured in my observatory near Kiev, Ukraine by 350 mm Newton.
Full size - https://www.flickr.com/photos/132752244 ... ed-public/

Very nice picture!

You have shown that there are traces of red Hα in M78, as well as dark dust and a lot of reflected bluish starlight.

Ann

alcarreño wrote: ↑Thu Nov 01, 2018 4:30 pm Copyrights: Raul Villaverde Fraile
Monoceros_2018 by Raul Villaverde, en Flickr

Oh, and belatedly...

I really, really like this picture! I particularly like how the Rosette Nebula and the nebulosity surrounding the Christmas Tree cluster seem to be connected. Bluish star 13 Monoceros (top center) seems to sit like a spider in its web, casting threads in both directions to connect the two prominent nebulas.

Great photo!

Ann

copyrights: COEP Astronomy Club, Pune Orion arm of milkyway ~ https://scontent.fpnq3-1.fna.fbcdn.net/ ... e=5CB1C19A

Flame Nebula NGC 2024
[img3]NGC 2024 Flame Nebula by maicon germiniani, no Flickr[/img3]

The Wizard Nebula NGC7380
Hubble Palette: Full Resolution:
http://www.astrobogdan.pl/wp/wp-content ... oniec2.jpg
Bicolor: Full Resolution:
http://www.astrobogdan.pl/wp/wp-content ... koniec.jpg

TEC140 f/5.2 Paramount MyT, QHY695A
Exposure: (SII,Ha,OIII) 20h SII 16x1200s Ha 26x1200s OIII 18x1200s (binx1)

Date and place: 10.2018 Ochojno, Poland
www.astrobogdan.pl