M17 in Ha light

The Omega Nebula, also known as the Swan Nebula, Checkmark Nebula, Lobster Nebula, and the Horseshoe Nebula[1][2] (catalogued as Messier 17 or M17 and as NGC 6618) is an H II region in the constellationSagittarius. It was discovered by Philippe Loys de Chéseaux in 1745. Charles Messier catalogued it in 1764. It is located in the rich starfields of the Sagittarius area of the Milky Way.

The Omega Nebula is between 5,000 and 6,000 light-years from Earth and it spans some 15 light-years in diameter. The cloud of interstellar matter of which this nebula is a part is roughly 40 light-years in diameter and has a mass of 30,000 solar masses.[3] The total mass of the Omega Nebula is an estimated 800 solar masses.It is considered one of the brightest and most massive star-forming regions of our galaxy.An open cluster of 35 stars lies embedded in the nebulosity and causes the gases of the nebula to shine due to radiation from these hot, young stars; however the actual number of stars in the nebula is much higher - up to 800, 100 of spectral type earlier than B9, and 9 of spectral type O,plus >1000 stars in formation on its outer regions.

This is an early version in Ha light only.
W.O FLT110 with dedicated TMB field flattener
FeatherTouch 3'' focuser
Starizona MicroTouch autofocuser
W.O ZS80 ED
SBIG ST10XME CFW9
Meade DSI
Filters: Ha 5nm Astrodon
Sky-Watcher EQ6 Pro

Ha:13*10min bin1x1
Total exposure time:2h10min

Astrobin Image of the Day 17 Aug 2014 

M16 the Eagle Nebula

The Eagle Nebula (catalogued as Messier 16 or M16, and as NGC 6611, and also known as the Star Queen Nebula) is a young open cluster of stars in the constellation Serpens, discovered by Jean-Philippe de Cheseaux in 1745-46. Its name derives from its shape that is thought to resemble an eagle. It contains several active star-forming gas and dust regions, including the famous "Pillars of Creation", photographed by the Hubble Space Telescope.
Tricolor Emmision Line image
S[II] 8nm(Red)_Ha 5nm(Green)_O[III] 3nm(Blue)

W.O FLT110 with dedicated TMB field flattener
FeatherTouch 3'' focuser
Starizona MicroTouch autofocuser
W.O ZS80 ED
SBIG ST10XME CFW9
Meade DSI
Filters: Ha 5nm Astrodon_S[II] 8nm Baader_O[III] 3nm Astrodon
Sky-Watcher EQ6 Pro

Ha:39*10min bin1x1
S[II]:22*10min bin1x1
O[III]:17*15min bin1x1_26*10min_1*6min bin1x1
Total exposure time:18h50min

Astrobin Image of the Day 14 Jun 2014

M16 the Eagle Nebula

This is an early version image of the M16 nebula,in Ha 5nm filter.

No crop , no noise reduction, just deconvolved and sharpen in ccdstack2 and then, contrast adjustement in photoshop.

Tonight , if i'm lucky i will continue with OIII ......

Instruments and exposure data:

W.O FLT110 with dedicated TMB field flattener
FeatherTouch 3'' focuser
Starizona MicroTouch autofocuser
W.O ZS80 ED
SBIG ST10XME CFW9
Meade DSI
Filters: Ha 5nm Astrodon
Sky-Watcher EQ6 Pro

Ha:39*10min bin1x1

Astrobin Image of the Day 3 Jun 2014

The Flaming Star Nebula - IC 405

HaRGB technique it's not my favorite, but it's the only way to show this dramatic flaming view !!!
Ha (Ha+R)GB
Ha:80'(8x10') R:50'(10x5') G:50'(10x5') B:80'(16x5')
total exposure 260min

Instruments and exposure data:
W.O FLT110 with dedicated TMB field flattener and FeatherTouch 3'' focuser
Starizona MicroTouch autofocuser
SBIG ST10XME CFW9
Filter Astrodon Hα 5nm
Astrodon RGB Filters
EQ6

Astrobin Image of the Day 27 May 2014 

NGC 7635: THE BUBBLE NEBULA

NGC 7635, also called the Bubble Nebula and Sharpless 162, is a H II region[2] 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[2] magnitude young central star, the 15 ± 5 M☉[4] SAO 20575 (BD+60 2522).[7] 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.[7] It was discovered in 1787 by Friedrich Wilhelm Herschel.[6] The star SAO 20575 or BD+602522 is thought to have a mass of 10-40 Solar masses.

Tricolor Emission Line Image


Instruments and exposure data:

W.O FLT110 with dedicated TMB field flattener
FeatherTouch 3'' focuser
Starizona MicroTouch autofocuser
W.O ZS80 ED
SBIG ST10XME CFW9
Meade DSI
Filters:
SII 8nm Baader Planetarium
Ha 5nm Astrodon
OIII 8.5nm Baader Planetarium

Sky-Watcher EQ6 Pro

SII :26*10min bin1x1
Ha :20*10min bin1x1
OIII:24*10min bin1x1

Total exposure time:11h40min

SH 2 171 modified Hubble palette _ reworked

Cosmic pillars of cold molecular gas and clouds of dark dust lie within Sharpless 171, a star-forming region some 3,000 light-years away in the royal constellation Cepheus. This tantalizing false-color skyscape spans about 20 light-years across the nebula's bright central region. It also highlights the pervasive glow of emission from atomic gas using narrowband filters and a color palette made popular in Hubble Space Telescope images. Powering the nebular glow are the young, hot stars of a newly formed cluster, Berkeley 59. Of course, this star-forming region is entry number 171 in the famous 1959 catalog of emission nebulae compiled by astronomer Stewart Sharpless.

explanation from : NASA apod 2008 October

Tricolor Emission Line Image

Instruments and exposure data:

W.O FLT110 with dedicated TMB field flattener
FeatherTouch 3'' focuser
Starizona MicroTouch autofocuser
W.O ZS80 ED
SBIG ST10XME CFW9
Meade DSI
Filters:
SII 8nm Baader Planetarium
Ha 5nm Astrodon
OIII 8.5nm Baader Planetarium

Sky-Watcher EQ6 Pro

SII :30*15min bin1x1
Ha :30*15min bin1x1
OIII:30*15min bin1x1

Total exposure time:22h30min

Elephant's Trunk nebula IC1396 _ rework

Instruments and exposure data:

W.O FLT110 with dedicated TMB field flattener
FeatherTouch 3'' focuser
Starizona MicroTouch autofocuser
W.O ZS80 ED
SBIG ST10XME CFW9
Meade DSI

Sky-Watcher EQ6 Pro

Tricolor Emmision Line image
S[II] 8nm(Red)_Ha 5nm(Green)_O[III] 3nm(Blue)
Modified Hubble Palette

S[II] 25*15min_Ha 29*15min_O[III] 18*15min
total exposure time : 1080min (18h)

The Elephant's Trunk nebula is a concentration of interstellar gas and dust in the star cluster IC 1396 – an ionized gas region located in the constellation Cepheus about 2,400 light years away from Earth.[1] 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 that is just to the west of IC 1396A.The entire IC 1396 region is ionized by the massive star, except for dense globules that can protect themselves from the star's harsh ultraviolet rays.

The Elephant's Trunk nebula is now thought to be a site of star formation, containing several very young (less than 100,000 yr) stars that were discovered in infrared images in 2003. Two older (but still young, a couple of million years, by the standards of stars, which live for billions of years) stars are present in a small, circular cavity in the head of the globule. Winds from these young stars may have emptied the cavity.

The combined action of the light from the massive star ionizing and compressing the rim of the cloud, and the wind from the young stars shifting gas from the center outward lead to very high compression in the Elephant's Trunk nebula. This pressure has triggered the current generation of protostars.[2]

M33 Triangulum Galaxy in pure Ha light

M33 Triangulum Galaxy in pure Ha light

Using infrared observations from the Spitzer Space Telescope, a total of 515 discrete candidate sources of 24 μm emission within the Triangulum galaxy have been catalogued as of 2007. The brightest sources lie within the central region of the galaxy and along the spiral arms.

Many of the emission sources are associated with HII regions of star formation.[39] The four brightest HII regions are designated NGC 588, NGC 592, NGC 595 and NGC 604. These regions are associated with molecular clouds containing(1.2–4) × 105 solar masses. The brightest of these regions, NGC 604, may have undergone a discrete outburst of star formation about three million years ago.[40] This nebula is the second most luminous HII region within the Local Group of galaxies, at (4.5 ± 1.5) × 107 times the luminosity of the Sun.[37] Other prominent HII regions in Triangulum include IC 132, IC 133 and IK 53.[36]

The northern main spiral arm contains four large HII regions, while the southern arm has greater concentrations of young, hot stars.[36] The estimated rate of supernova explosions in the Triangulum Galaxy is 0.06 Type Ia and 0.62 Type Ib/Type II per century. This is equivalent to a supernova explosion every 147 years, on average.[41] As of 2008, a total of 100 supernova remnants have been identified in the Triangulum Galaxy,[42] and a majority of the remnants lie in the southern half of the spiral galaxy. Similar asymmetries exist for H I and H II regions, plus highly luminous concentrations of massive, O type stars. The center of the distribution of these features is offset about two arc minutes to the southwest.[36] Being a local galaxy, theCentral Bureau for Astronomical Telegrams (CBAT) tracks novae in M33 along with M31 and M81.[43]

From Wikipedia, the free encyclopedia

Instruments and exposure data:

Ha 23*10min

W.O FLT110 with dedicated TMB field flattener

FeatherTouch 3'' focuser

Starizona MicroTouch autofocuser

W.O ZS80 ED

SBIG ST10XME CFW9

Meade DSI

Sky-Watcher EQ6 Pro

Filters: Ha 5nm Astrodon