Starship Asterisk*

by **alcarreño** » Wed Dec 05, 2018 8:51 am

Ann wrote: ↑Mon Nov 19, 2018 2:44 pm
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

Thanks¡¡

by **astroligu** » Sat Dec 01, 2018 3:25 pm

Rolando Ligustri wrote: comet 46P Wirtanen today remotely from Australia-SSO, it is interesting to see its tail of ions and that the coma measures 55 ' diameter. visual observers have estimated it around 5.7 magnitude

link for high res, https://www.astrobin.com/full/379070/0/

by **astrosirius** » Sat Dec 01, 2018 1:48 pm

IC 434 Horsehead nebula - Barnad 33 (B33)

he Horsehead Nebula is a dark nebula in the constellation Orion. The nebula is located just to the south of the star Alnitak, which is farthest east on Orion's Belt, & is part of the much larger Orion Molecular Cloud Complex.

Copyright by: Lluís Romero

by **Steve Pastor** » Fri Nov 30, 2018 7:41 pm

Narrowband Image of a Large Emission Nebula in Cassiopeia

NGC 281 is a H II emission nebula in Cassiopeia containing the open cluster IC 1590, which powers the ionization of the hydrogen gas. Large dust filaments as well as Bok globules, which may be the site of future star formation, can be seen. The image is a total of 5 hrs 20 min exposure in H-alpha and 10 hrs in Oxygen[III] light. Image taken with a Takahashi CCA250 astrograph and QSI683wsg camera on a Paramount ME on the nights of 16 Nov, 13, 15 Dec 2017 and 3 Oct, 5, 6, 10 Nov 2018 in Mayhill, NM (46 x 1200 sec lights @ -20 degrees C. Astrodon H-alpha filter 5 nm and O[III] filter 3 nm bandwidth; 24 darks ; 128 bias; 128 flats). Bicolor Image with Pixel Math ( R = H-alpha; Green = 30% H-alpha + 70 % O[III], B = O[III]; Processed with PixInsight 1.8.5.1353 Ripley (x64).

by **Ann** » Thu Nov 29, 2018 2:47 am

trobison wrote: ↑Tue Nov 27, 2018 12:34 pm The Trifad Nebula

The Trifad Nebula by Terry Robison, on Flickr

Messier 20, or The Trifad Nebula is an unusual combination of dark, reflective, and emission nebula, plus an interesting open cluster of stars. It is located in an H II region in Sagittarius. The distance from out vantage is around 5200 light years away. It’s a little over 21 light years across, and is fairly bright at Magnitude 6.3. This makes it a fairly popular target with amateur astronomers.

I wanted to highlight the fine Ha filaments that surround this popular target. Ha areas are typically red in astronomical photos. The central area is bright, and tends to have a more washed out colour. On closer inspection, there is a terrific amount of detail running through the lobs. It looks like there are many dark cavernous channels intersecting this area. Each branching out into tiny filaments.

Exposure Details:

Lum 46X900
Red 12X900
Green 8X900
Blue 11X900
Ha 18X1800

Total time 28.25 hours

Instruments Used:

10 Inch RCOS fl 9.1
Astro Physics AP-900 Mount
SBIG STL 11000m
FLI Filter Wheel
Astrodon Lum, Red, Green, Blue Filters
Baader Planetarium H-alpha 7nm Narrowband-Filter

Software Used

CCDStack (calibration, alignment, data rejection, stacking)
Photoshop CS 6 (Image processing)

That's a magnificent picture! So detailed and so beautiful!

I love how you have captured so much red Hα nebulosity, not least those filamentary streamers at left in your image. But you have also shown us delightful details in the blue reflection nebula, how it wraps around the almost circular red emission nebula, but gets fainter and less blue as it does so. I love, too, how the blue reflection nebula seems to extend almost all the way to the bright blue star HD 164402 at 6 o'clock in your image. I can't help wondering if the nebula and the star just might be at comparable distances from us.

What a delightful picture!

Ann

by **Deep-Sky-Astroteam** » Wed Nov 28, 2018 6:44 pm

IC 5146 Cocoon Nebula
Copyright by Frank Iwaszkiewicz & Nico Geisler
https://www.deep-sky-astroteam.de/en/Ne ... oon-nebula

by **HHV** » Tue Nov 27, 2018 1:41 pm

Ann wrote: ↑Tue Nov 27, 2018 9:04 am
That's delightful!!!

Ann

Hi Ann!

Thx...achieved with a quite simple setup.

best regards

by **trobison** » Tue Nov 27, 2018 12:34 pm

The Trifad Nebula

The Trifad Nebula by Terry Robison, on Flickr

Messier 20, or The Trifad Nebula is an unusual combination of dark, reflective, and emission nebula, plus an interesting open cluster of stars. It is located in an H II region in Sagittarius. The distance from out vantage is around 5200 light years away. It’s a little over 21 light years across, and is fairly bright at Magnitude 6.3. This makes it a fairly popular target with amateur astronomers.

I wanted to highlight the fine Ha filaments that surround this popular target. Ha areas are typically red in astronomical photos. The central area is bright, and tends to have a more washed out colour. On closer inspection, there is a terrific amount of detail running through the lobs. It looks like there are many dark cavernous channels intersecting this area. Each branching out into tiny filaments.

Exposure Details:

Lum 46X900
Red 12X900
Green 8X900
Blue 11X900
Ha 18X1800

Total time 28.25 hours

Instruments Used:

10 Inch RCOS fl 9.1
Astro Physics AP-900 Mount
SBIG STL 11000m
FLI Filter Wheel
Astrodon Lum, Red, Green, Blue Filters
Baader Planetarium H-alpha 7nm Narrowband-Filter

Software Used

CCDStack (calibration, alignment, data rejection, stacking)
Photoshop CS 6 (Image processing)

by **Sebastian Voltmer** » Tue Nov 27, 2018 12:23 pm

1st image from the InSight lander - cleaned and processed (right).

solo version:

www.astrofilm.com / www.apollo-13.eu
sebastian@voltmer.de

Cheers,
Sebastian

by **Ann** » Tue Nov 27, 2018 9:04 am

HHV wrote: ↑Tue Nov 27, 2018 7:48 am Good Morning!

Finally postprocessed my closeup of the Pleiades, done with a 10inch Newtonian reflector and full format DSLR. Fine details are shown including the little edge-on galaxy PGC 13696 right of the star Electra.

That's delightful!!!

Ann

by **HHV** » Tue Nov 27, 2018 7:48 am

Good Morning!

Finally postprocessed my closeup of the Pleiades, done with a 10inch Newtonian reflector and full format DSLR. Fine details are shown including the little edge-on galaxy PGC 13696 right of the star Electra.

by **Ann** » Tue Nov 27, 2018 12:21 am

Goudig wrote: ↑Mon Nov 26, 2018 10:36 am The Milky Way galactic center, a 19 panels mosaic
https://www.bastienfoucher.com
Copyright: Bastien Foucher
Click to view full size image
A higher resolution version is available here : https://www.bastienfoucher.com/Astropho ... /bulbe.jpg

The highest resolution picture (more than 100 mega pixels) is available on request.

That's a lovely picture of the Milky Way center and upper Scorpius!

The details are great, and the colors are fantastic. Some people might think that the colors are a bit too saturated, but I love them.

And look at all the details! Look at the "blue horse" in all its glory at one o'clock! Look at the pink emission nebulosity surrounding Delta Sco (to the right of the blue horse) and Pi Sco (below Delta). Look at the intricate blue reflection nebulosity below and to the right of Pi! Look at the large rectangular splotch of pink emission nebulosity surrounding Tau Sco, below the yellow reflection nebula surrounding Antares. And look at all the details in the dark dust columns rising from the disk of the Milky Way, and look at all the details and the nebulas in the central dust lane of the Milky Way!

What a great picture!

Ann

by **spinlock** » Mon Nov 26, 2018 8:08 pm

Horsehead and Flame Nebulae from Negev desert, recent rework

: IC434, NGC 2024

APM APO 107-700/SBIG STF 8300M/NEQ6 - LRGB
About 5.5 hours of integration time, HDR combining long and short exposures

by **-Amenophis-** » Mon Nov 26, 2018 8:03 pm

California ashes

The deadliest fire in California's history that devastated the north for more than two weeks is now "100%" under control, US firefighters said Sunday.
So tribute to the victims, American peoples and fire fighters with the nebula of California.
We all have a thought for them.

Copyright: Thomas LELU
https://www.astrobin.com/378566/B/#c292216

by **rwittich_de** » Mon Nov 26, 2018 5:36 pm

Many Thanks to Marcel Drechsler, who told me very early about his discovery. So I could use the good weather for my own picture. This is only 80 x 3 minutes, only 4 hours with my ASI094 at my RASA. So again thanks and congratulations to Marcel.

: Click to view full size image

by **Juan Lozano** » Mon Nov 26, 2018 11:09 am

Cetus Duo
https://observatorioelche.blogspot.com/ ... s-duo.html
Copyright: Juan Lozano De Haro

: Click to view full size image

by **Goudig** » Mon Nov 26, 2018 10:36 am

The Milky Way galactic center, a 19 panels mosaic
https://www.bastienfoucher.com
Copyright: Bastien Foucher

: Click to view full size image

A higher resolution version is available here : https://www.bastienfoucher.com/Astropho ... /bulbe.jpg

The highest resolution picture (more than 100 mega pixels) is available on request.

by **Alson Wong** » Mon Nov 26, 2018 6:24 am

IC 1805 - The Heart Nebula
Copyright: Alson Wong
https://scontent-sjc3-1.xx.fbcdn.net/v/ ... e=5C76B50C

by **Marcel_Drechsler** » Sun Nov 25, 2018 12:18 pm

NEW DISCOVERY: Finns Nebula, a reflection nebula around the variable star BE Cam

High resolution image: http://www.sternwarte-baerenstein.de/up ... ighres.jpg
AstroBin: https://www.astrobin.com/378375/

http://www.sternwarte-baerenstein.de/up ... _900px.jpg

Finn is my little nephew who turned 2 today. To honour him I named the nabula that way.
Finns Nebula is an unknown and uncatalogized reflection nebula around the variable star BE Cam (V* BE CAM, HIP 17884) in the constellation Camelopardalis. It has never been photographed before.
The object is a very rare orange-yellow reflection nebula of the Merope type, because it reminds optically strongly of the nebula around the star in the Pleiades.
Because Finns nebula is located around a variable star, its brightness varies periodically analogous to its central star.
This makes Finns nebula an extremely rare yellow, variable reflection nebula.
With an extension of 30-40 arc minutes, Finns nebula is very large, but extremely weak in brightness.

Dossier on the discovery (PDF) for download:
http://www.sternwarte-baerenstein.de/up ... nebula.pdf

The photo was taken on my backyard observatory in Saxony/Germany.

object: Finns Nebula around the variable star BE Cam
date of recording: September and October 2018
exposure: 35.2 h LRGB (3750 short exposed frames)
telescope: Celestron RASA F2.2
focal lenght: 620mm
filter: Baader 2" LRGB
camera: ZWO ASI1600mmc
guiding: 250mm guide scope, MGEN
mount: Celestron CGE pro

Marcel Drechsler
Baerenstein Observatory

by **gvancell** » Sun Nov 25, 2018 7:06 am

Magellanic Clouds over Bromo
https://gvancell.com
Copyright: Gilbert Vancell

The Magellanic Clouds over Bromo Semeru Tengger National Park, Java, Indonesia.

My first time shooting the Magellanic Clouds, and couldn’t have been any place better!
I was already late for the Milky Way, so I settled for the next best thing in the Southern hemisphere – the Magellanic Clouds. Visible low on the horizon at this latitude, they perfectly aligned over the Tengger Sand Sea, which is a large ancient crater where 4 newer cones formed including Mt. Bromo (left) which is still active. The mountain in the background is Mt. Semeru, an active volcano and the highest peak on Java Island (3,676m).

Blog post: https://gvancell.com/blogs/blog/magella ... over-bromo

Stack of 10 images
35mm, 10sec at f1.4, ISO 3200

: Click to view full size image

by **DangAstro** » Sun Nov 25, 2018 1:26 am

Dragon vs. the Wizard
https://www.astrobin.com/full/378330/0/
Copyright: Daniel Goelling
50 hours of narrowband data aquired over 3 years. Modified Hubbell pallet using:
29.5 hours of Ha
10.5 hours of Oiii
10 hours of Sii

Thanks for looking,
Dan

by **cfm2004** » Sat Nov 24, 2018 9:58 pm

Località: San Romualdo - Ravenna
Tecnosky AG70 F/5 su ASA DDM60PRO con Autoslew e Sequence.
CCD QSI 583ws raffreddato -15 - Pose non guidate
RGB Astrodon Gen2 E-series e Narrowband 3nm
RGB-HA-OIII: R 25x5min, G 24x5min, B 30x5min, HA 32x15min e OIII 33x15min

Cristina Cellini

by **-Amenophis-** » Sat Nov 24, 2018 9:36 pm

SHO California

Copyright: Thomas LELU
ASA10"
Paramount MyT
G2-4000
SII : 27x1200s
Ha : 27x1200s
OIII : 27x1200s
Total : 27hrs
http://www.astrophotographie-lorraine.com/

by **AstroCricro** » Fri Nov 23, 2018 10:10 pm

Copyright: Cristiano Secci

NGC7635 - Bubble Nebula - HaSgOIII by Cristiano Secci

NGC 7635, also known as the Bubble Nebula, Sharpless 162, or Caldwell 11, is a H II region emission nebula in the constellation Cassiopeia. It lies close to the direction of the open cluster Messier 52. The "bubble" is created by the stellar wind from a massive hot, 8.7 magnitude young central star, SAO 20575. The nebula is near a giant molecular cloud which contains the expansion of the bubble nebula while itself being excited by the hot central star, causing it to glow. It was discovered in 1787 by William Herschel.

Technical Data:
OTA: SkyWatcher Newton 200mm F/5
Mount: iOptron CEM60
Camera: ZWO ASI 1600 MM-C, cooled at -20C
Guide Camera: QHY-5LII Mono
Guide Scope: ArteSky 60mm F/4
Filters: Optolong Ha, OIII
Baader Coma Corrector MPCIII
Software: Sequence Generator Pro, PHD2, Deep Sky Stacker, PS
Bicolor Image with Synthetic Green channel created by following the technique of Steve Cannistra

30 frames in total, Gain 139 - Offset 21
Ha 20x120s (40m)
OIII 10x120s (20m)
Total Integration Time: 1 hour
15 Bias
11 Darks
50 Flats (25 for each channel)

by **AstroCricro** » Fri Nov 23, 2018 10:06 pm

Copyright: Cristiano Secci

Melotte 15 Hubble Palette by Cristiano Secci

Melotte 15 is an open cluster of bright stars located at the center of the Heart Nebula (IC 1805). Named for its discoverer, Philibert Jacques Melotte (1880-1961), the grouping of O-type supergiants is only about 1.5 million years old. "O" stars are the brightest and most massive known, about 20 to 100 times larger than the Sun! The lifespan of these hot, blue stars can be as short as 3-6 million years. Melotte 15 is about 7,500 light years away from Earth.

Technical Data:
OTA: SkyWatcher Newton 200mm F/5
Mount: iOptron CEM60
Camera: ZWO ASI 1600 MM-C, cooled at -20C
Guide Camera: QHY-5LII Mono
Guide Scope: ArteSky 60mm F/4
Filters: Optolong Ha, OIII, SII
Baader Coma Corrector MPCIII
Software: Sequence Generator Pro, PHD2, Deep Sky Stacker, PS

56 frames in total, Gain 300 - Offset 21
Ha 20x120s + 4x300s (60m)
OIII 16x120s (32m)
SII 16x120s (32m)
Total Integration Time: 2 hour, 4 minutes
15 Bias
11 Darks
No Flats

Starship Asterisk*

Submission: 2018 November

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"Seven Sisters" with edge-on PGC 13696

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Sh2-91 Supernova Remnant in Cygnus

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