arasteo

Sharpless 115 stands just north and west of Deneb. Noted in the 1959 catalog by astronomer Stewart Sharpless (as Sh2-115) the faint but lovely emission nebula lies along the edge of one of the outer Milky Way''s giant molecular clouds, about 7,500 light-years away. Shining with the light of ionized atoms of hydrogen, sulfur, and oxygen in this Hubble palette color composite image, the nebular glow is powered by hot stars in star cluster Berkeley 90. The cluster stars are likely only 100 million years old or so and are still embedded in Sharpless 115. But the stars'' strong winds and radiation have cleared away much of their dusty, natal cloud. At the emission nebula''s estimated distance, this cosmic close-up spans just under 100 light-years. http://apod.nasa.gov/apod/ap130614.html Sh2-115 proved much more difficult target than i originally thought. For collecting the photons i wanted , i had to face extremely bad atmospheric conditions, such as high humidity and temperature, in all 5 nights that needed for completion the whole project. It is a beautiful object but very faint particulary in OIII and SII with complex structures. Hope you like it ...! 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_S[iI] 8nm Baader_O[iII] 3nm Astrodon Sky-Watcher EQ6 Pro Ha:60*10min bin1x1 S[iI]:19*15min bin1x1 O[iII]:23*15min bin1x1_35*10min_bin1x1 Total exposure time:26h20min

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 Αν και μου χάλασαν λίγο τα άστρα , λόγω μέτριων συνθηκών κατά τη λήψη του SII , τα παρατάω!!!δεν μπορώ να βλέπω άλλο Μ16, τα μάτια μου βλέπουνε πουλάκια!!!!

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 http://arasteo.blogspot.gr/

NGC 2174 (also known as Monkey Head Nebula) is an H II[1] emission nebula located in the constellation Orion and is associated with the open star cluster NGC 2175.[1] It is thought to be located about 6,400 light-years away from Earth. 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_RGB Baader Planetarium Sky-Watcher EQ6 Pro Tricolor Emmision Line image S[iI] 8nm(Red)_Ha 5nm(Green)_O[iII] 3nm(Blue) Modified Hubble Palette S[iI] 4*10min+5Ha 5*10min_Ha 14*10min_ O[iII] 23*10min L(S[iI]+Ha+O[iII])_Red(S[iI]+Ha)_Green(Ha)_Blue(O[iII]) Ha:14*10min bin1x1 S[iI]:4*10min bin1x1 O[iII]:23*10min bin1x1 Total exposure time:6h50min

Comet Ison C/2012_S1 animation November 9 2013 Λίγο υπομονή να φορτώσει... Πρώτη παρατήρηση του κομήτη Ison. Οι λήψεις έγιναν το ξημέρωμα της 9/11/2013 ,ξεκίνησα στις 05:29 και τελείωσα μετά από 35 λεπτά Είχα αρκετό gradient , γεγονός που είναι εμφανές στα 2-3 τελευταία καρέ . Παρ΄όλα αυτά το χάρηκα ιδιαίτερα!!! Instruments and exposure data: 12*3min bin1x1 W.O FLT110 with dedicated TMB field flattener Sky-Watcher EQ6 Pro FeatherTouch 3'' focuser Starizona MicroTouch autofocuser W.O ZS80 ED SBIG ST10XME CFW9 Meade DSI Filters: Luminance Astrodon Μία πιο στρετσαρισμένη (αλλά και περισσότερο θόρυβο ) έκδοση μπορείτε ναι δείτε στο blog μου http://arasteo.blogspot.gr/