Spiral Galaxy NGC 3718

25.04

NGC 3718 is a highly disturbed galaxy in Ursa Major. Astronomers originally thought that NGC 3718 was a Lenticular Galaxy. However later photos showed two faint extensions that emerge from the envelope on opposite sides of the periphery, showing that it is most likely a spiral galaxy.  The distance to NGC 3718 is roughly 52 Million Light Years.

Imaging telescopes or lenses: Celestron De-forked CPC 1100 Edge
Imaging cameras: Atik 4000
Mounts: Tak EM200 Temma 2
Guiding telescopes or lenses: Celestron De-forked CPC 1100 Edge
Guiding cameras: Starlight Xpress Lodestar2
Filters: Baader RGB
Resolution: 982×996
Dates: April 23, 2015
Frames: 63×300″
Integration: 5.2 hours
Avg. Moon age: 4.52 days
Avg. Moon phase: 21.43%
RA center: 173.270 degrees
DEC center: 53.055 degrees
Pixel scale: 1.080 arcsec/pixel
Orientation: 5.377 degrees
Field radius: 0.210 degrees
Author: cfpendock

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The Whirlpool Galaxy, Messier 51a, M51a, or NGC 5194

24апр

The Whirlpool Galaxy (also known as Messier 51a, M51a, or NGC 5194) is an interacting  grand-design  spiral galaxy with a Seyfert 2 active galactic nucleus in the constellation Canes Venatici. It was the first galaxy to be classified as a spiral galaxy. Recently it was estimated to be 23 ± 4 million light-years from the Milky Way, but different methods yield distances between 15 and 35 million ly. Messier 51 is one of the best known galaxies in the sky. The galaxy and its companion (NGC 5195) are easily observed by amateur astronomers, and the two galaxies may even be seen with binoculars.

RA center: 202.485 degrees
DEC center: 47.211 degrees
Orientation: 98.181 degrees
Field radius: 0.221 degrees
Author: Gianluca Belgrado

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NGC 3576, Statue of Liberty Nebula

23апр

NGC 3576 is a minor nebula in the Sagittarius arm of the galaxy a few thousand light-years away from the Eta Carinae nebula. Eventually this nebula even received six different classification numbers. Currently, astronomers call the entire nebula NGC 3576. A popular nickname is “The Statue of Liberty Nebula” because of the distinctive shape in the middle of the nebula.

Imaging telescopes or lenses: Vixen R200SS f/4
Imaging cameras: ATIK 383L+ Mono
Mounts: Gemini G42 Observatory+
Guiding telescopes or lenses: Vixen R200SS f/4
Guiding cameras: ATIK 383L+ Mono
Focal reducers: Teleskop-Service Coma corrector
Software: Pixinsight 1.8
Filters: Baader Planetarium Ha 7nm,  Baader OIII,  Baader SII SII 7nm Filter
Resolution: 2960×2191
Frames: 80×180″
Integration: 4.0 hours
Author:  Jonathan Durand

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IC1396 HA-SHO, Elephant trunk Nebula

22апр

The Elephant’s Trunk nebula is a concentration of interstellar gas and dust within the much larger ionized gas region IC 1396 located in the constellation Cepheus about 2,400 light years away from Earth. The piece of the nebula shown here is the dark, dense globule IC 1396A; it is commonly called the Elephant’s Trunk nebula because of its appearance at visible light wavelengths, where there is a dark patch with a bright, sinuous rim. The bright rim is the surface of the dense cloud that is being illuminated and ionized by a very bright, massive star (HD 206267) that is just to the west of IC 1396A.

Imaging telescopes or lenses: TS 90mm F6.6 APO Triplet – 2.5 “focuser
Imaging cameras: SBIG 8300M
Mounts: AZ EQ6 GT SkyWatcher‎
Guiding telescopes or lenses: TS APO65Q 65mm F/6,5 Quadruplet Astrograph
Guiding cameras: Orion Starshoot Autoguider Orion Autoguider
Focal reducers: TS-Flattener 2,5″
Software: PixInsight
Filters: Baader 7nm Ha Ø 36,  Baader SII 8nm Ø36,  Baader OIII 8.5nm Ø36
Accessories: Orion Star Shoot Auto Guider Orion Starshoot Auto-Guider,  SBIG Filter Wheel FW8-8300
Resolution: 1198×1240
Dates: April 10, 2015
Frames:
Baader 7nm Ha Ø 36: 20×900″ -10C bin 1×1
Baader OIII 8.5nm Ø36: 13×900″ bin 1×1
Baader SII 8nm Ø36: 13×900″ bin 1×1
Integration: 11.5 hours
Avg. Moon age: 19.96 days
Avg. Moon phase: 72.49%
Bortle Dark-Sky Scale: 9.00
RA center: 324.483 degrees
DEC center: 57.480 degrees
Pixel scale: 3.706 arcsec/pixel
Orientation: -93.058 degrees
Field radius: 0.888 degrees
Locations: centre ville, ANTIBES, 06, France

Author: Stéphan & Fils

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Spiral galaxy NGC 891

21апр

 

NGC 891 (also known as Caldwell 23) is an edge-on unbarred spiral galaxy about 30 million light-years away in the constellation Andromeda. It was discovered by William Herschel on October 6, 1784. The galaxy is a member of the NGC 1023 group of galaxies in the Local Supercluster. It has an H II nucleus. The object is visible in small to moderate size telescopes as a faint elongated smear of light with a dust lane visible in larger apertures. In 2005, due to its attractiveness and scientific interest, NGC 891 was selected to be the first light image of the Large Binocular Telescope. In 2012, it was again used as a first light image of the Discovery Channel Telescope with the Large Monolithic Imager.

Imaging telescopes or lenses: Gso RC 12″ Ritchey-Chretien
Imaging cameras: canon 350 D Baader
Mounts: Swan Astro WS180GT
Resolution: 3292×3301
Frames: 50×360″
Integration: 5.0 hours
RA center: 35.632 degrees
DEC center: 42.348 degrees
Pixel scale: 0.268 arcsec/pixel
Orientation: 87.739 degrees
Field radius: 0.174 degrees
Author: nicola76

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Spiral Galaxy IC 2574 (Coddington’s Nebula)

20апр

IC 2574, discovered by Edwin Coddington in 1898 and classified first as a nebula, is actually a dwarf irregular galaxy in the constellation Ursa Major and is part of the M81 group of galaxies.
An extract taken from a study by S. Steward & F. Walter 2000: In the standard picture (e.g., Weaver et al. 1977; McKee & Ostriker 1977; Chu et al.1995), these structures are believed to be created by young star-forming regions that supposedly eject a great amount of mechanical energy into the ambient ISM in terms of strong stellar winds and subsequent supernova (SN) explosions.

Imaging telescopes or lenses: Planewave Instruments CDK 12.5″
Imaging cameras: FLI Proline 6303E
Mounts: Losmandy Titan 50
Guiding telescopes or lenses: Planewave Instruments CDK 12.5″
Software: PixInsight,  Maxim DL,  Software Bisque TheSky6,  Larry Weber FocusMax
Filters: Baader Planetarium LRGB Filter Set
Accessories: Starlight Xpress AO-LF
Resolution: 2150×1434
Dates: Feb. 24, 2012
Frames: 26×900″
Integration: 6.5 hours
Avg. Moon age: 1.95 days
Avg. Moon phase: 4.26%
RA center: 157.188 degrees
DEC center: 68.426 degrees
Pixel scale: 1.043 arcsec/pixel
Orientation: -53.081 degrees
Field radius: 0.374 degrees
Locations: Observatori d’Agulló, Àger , Lleida (Catalonia), Spain
Author: Pere Gil

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Globular Cluster M 13

19апр

Messier 13 (M13), also designated NGC 6205 and sometimes called the Great Globular Cluster in Hercules or the Hercules Globular Cluster, is a globular cluster of about 300,000 stars in the constellation of Hercules.

Imaging telescopes or lenses: Astro-Tech AT65EDQ
Imaging cameras: Atik 414EX Mono
Mounts: Celestron AVX
Guiding telescopes or lenses: Astro-Tech AT72ED
Guiding cameras: Orion Star Shoot Autoguider Pro
Software: PixInsight 1.8,  PHD2 Guiding Software
Filters: Baader LRGB 1.25” Filters
Accessories: Atik Manual Filter Wheel
Resolution: 1358×1009
Dates: April 16, 2015
Frames:
Baader Planetarium 1.25″ B: 9×300″ -15C
Baader Planetarium 1.25″ G: 9×300″ -15C
Baader Planetarium 1.25″ R: 9×300″ -15C
Integration: 2.2 hours
Avg. Moon age: 26.34 days
Avg. Moon phase: 11.06%
RA center: 250.440 degrees
DEC center: 36.464 degrees
Orientation: 90.448 degrees
Field radius: 0.739 degrees

Author: Mike Kline

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NGC 6334, Cat’s Paw Nebula

18апр

NGC 6334 (also known as the Cat’s Paw Nebula, Bear Claw Nebula and Gum 64) is an emission nebula located in the constellation Scorpius. It was discovered by astronomer John Herschel in 1837, who observed it from the Cape of Good Hope in South Africa.

Imaging telescopes or lenses: Saxon ED120
Imaging cameras: Canon 60Da
Mounts: Skywatcher AZ-EQ6 GT Skywatcher
Guiding telescopes or lenses: ProStar 50mm Guide Scope
Guiding cameras: Orion StarShoot
Software: Adobe Photoshop CS6 Photoshop, Deep Sky Stacker
Filters: Astronomik CLS CCD 2″
Accessories: Astro-Tech 2″ Field Flattener
Resolution: 5202×3465
Dates: April 13, 2015
Frames: 50×180″ ISO1250
Integration: 2.5 hours
Darks: ~50
Flats: ~50
Bias: ~50
Avg. Moon age: 23.03 days
Avg. Moon phase: 40.65%
Temperature: 5.00
RA center: 260.017 degrees
DEC center: -35.948 degrees
Orientation: 89.020 degrees
Field radius: 0.648 degrees
Locations: Home, Bentleigh East, Victoria, Australia
Author: Uri Abraham

SPONLI is a project about astrophotography, for amateur astronomers.

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Centaurus A, NGC 5128

17апр

Centaurus A or NGC 5128 is a prominent galaxy in the constellation of Centaurus. It was discovered in 1826 by Scottish astronomer James Dunlop from his home in Parramatta, in New South Wales, Australia. There is considerable debate in the literature regarding the galaxy’s fundamental properties such as its Hubble type (lenticular galaxy or a giant elliptical galaxy) and distance (10–16 million light-years). NGC 5128 is one of the closest radio galaxies to Earth, so its active galactic nucleus has been extensively studied by professional astronomers. The galaxy is also the fifth brightest in the sky, making it an ideal amateur astronomy target, although the galaxy is only visible from low northern latitudes and the southern hemisphere.

Imaging telescopes or lenses: Bintel (GSO) RC8
Imaging cameras: QHY8L
Mounts: Sky-Watcher HEQ5 PRO Synscan GoTo
Guiding telescopes or lenses: Orion ST 80
Guiding cameras: QHYCCD QHY5
Software: DeepSkyStacker,  StarTools
Filters: Baader Planetarium UHC-S Filter
Resolution: 1500×995
Dates: June 15, 2014
Frames: 15×600″
Integration: 2.5 hours
Avg. Moon age: 16.85 days
Avg. Moon phase: 95.16%
RA center: 201.389 degrees
DEC center: -43.018 degrees
Pixel scale: 0.908 arcsec/pixel
Orientation: 88.052 degrees
Field radius: 0.227 degrees
Locations: Basalt Ridge Observatory, Brisbane Australia, Brisbane, Queensland, Australia

Author: Mario Vecchi

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Spiral Galaxy NGC 3521

16апр_

NGC 3521 is a flocculent spiral galaxy located around 26 million light-years away from Earth in the constellation Leo. It has a morphological classification of SAB(rs)bc, which indicates that it is a spiral galaxy with a trace of a bar structure (SAB), a weak inner ring (rs), and moderate to loosely wound arm structure (bc). The bar structure is difficult to discern, both because it has a low ellipticity and the galaxy is at a high inclination of 72.7° to the line of sight. The relatively bright bulge is nearly 3/4 the size of the bar, which may indicate the former is quite massive. The nucleus of this galaxy is classified as an HII LINER, as there is an H II region at the core and the nucleus forms a low-ionization nuclear emission-line region.

Source: Wikipedia

“For composing it I have used the R+ band from Subaru as luminance enriched, in the galaxy core, with frames from the Hubble Space Telescope (filters: 814nm and 606nm). Ha and SII data are also coming from the HST, 658nm narrow. RGB data from ESO FORS1: filters V, B and I.” (c) R. Colombari

Data: NASA / ESA / NAOJ / ESO

Assembling and processing: R. Colombari

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