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Everything posted by afesan
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Sure ¡¡¡..I agree autumn/winter skies are great for nebulas and great imaging projects... furthermore ¡¡ ..nights are longer ¡¡ Hoorayyy¡¡
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" Sea Horse Dark Nebula " aKa Open cluster NGC 654,VdB6,LDN 1332,1334,1337 (Cassiopeia) * August-September 2014 * ASA N12 astrograph (f/3.6,1078mm) * DDM85 mount * FLI ML8300 at -25ºC * Optec LRGB filter set * L.520m R:180m G:160m B:210m * Unguided * NGC 654 is a young cluster,with an age of about 14 million years.The cluster`s 80 measured members (7th magnitude and fainter) appear in little clumps scattered across a mere 6´of sky,or 14 lightyears. Astronomers have taken keen interest in NGC 654 because of it displays nonuniform extinction across its face,with stars reddened by about 1 magnitude on average.Color excess indicates the amount of interstellar reddening suffered by the light from the star when it passes through dust in space.Data from Indian Astronomer Biman J. Medhi and colleagues (2008), show evidence for the presence of at least two layers of dust along the line of sight to the cluster, which lies at a distance of about 7800 light-years.The 7th magnitude yellow supergiant star HD 10494 is a likely member of this cluster with a recessional velocity of about 31km/sec.They estimate the distances to the two dust layers to be about 652 and 3300 light-years, placing the clouds much closer to the Sun than the cluster.The foreground dust grains,appear to be responsible,then, for the nonuniform extinction towards the cluster,whose least reddened stars lie close to the cluster center. VdB 6 is a little reflection nebula. The star wrapped in vdB 6 is listed as HIP 8074 of magnitude 9.66, located in the Perseus arm, which gives the nebula a distinctly bluish color. More resolution image : http://afesan.es/Deepspace/NGC%20654,VdB6,LDN%201332,1334,1337%20(Cassiopeia)_jpg_orig.html Cs Antonio
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I know what you feel, Pavel. I live at north of Spain..in a permamently covered skies and high humidity covered area due to mountains reefs. For years I imaged in those unprecedible conditions until I could send my equipment to Southwest area of Spain..My website was named "Astronomy under the clouds" :-) Very nice result for 5 hours¡ ¡ Go on ¡ Antonio
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Wow¡.. A rarely imaged target Ron¡ Good job ¡ Antonio
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NGC 654,VdB6,LDN 1332,1334,1337 (Cassiopeia)
afesan posted a gallery image in Members Albums Category
From the album: SPAG Monfrague Remote Observatory
"Sea Horse Dark Nebula " aKa Open cluster NGC 654,VdB6,LDN 1332,1334,1337 (Cassiopeia) * August-September 2014 * ASA N12 astrograph (f/3.6,1078mm) * DDM85 mount * FLI ML8300 at -25ºC * Optec LRGB filter set * L.520m R:180m G:160m B:210m * Unguided * NGC 654 is a young cluster,with an age of about 14 million years.The cluster`s 80 measured members (7th magnitude and fainter) appear in little clumps scattered across a mere 6´of sky,or 14 lightyears. Astronomers have taken keen interest in NGC 654 because of it displays nonuniform extinction across its face,with stars reddened by about 1 magnitude on average.Color excess indicates the amount of interstellar reddening suffered by the light from the star when it passes through dust in space.Data from Indian Astronomer Biman J. Medhi and colleagues (2008), show evidence for the presence of at least two layers of dust along the line of sight to the cluster, which lies at a distance of about 7800 light-years.The 7th magnitude yellow supergiant star HD 10494 is a likely member of this cluster with a recessional velocity of about 31km/sec.They estimate the distances to the two dust layers to be about 652 and 3300 light-years, placing the clouds much closer to the Sun than the cluster.The foreground dust grains,appear to be responsible,then, for the nonuniform extinction towards the cluster,whose least reddened stars lie close to the cluster center. VdB 6 is a little reflection nebula. The star wrapped in vdB 6 is listed as HIP 8074 of magnitude 9.66, located in the Perseus arm, which gives the nebula a distinctly bluish color. Credits: Stephen James O´Meara "Deep-Sky Companions:The Secret Deep, Vol 4" Italian Wikipedia " S -
Thanks, guys¡ Well.. I simply choose those rare targets because it´s there¡¡ .. Sometimes it is a suggestion from a semi-professional astronomer...,sometimes I like to look at lost and forgotten catalogues ( as a library mouse)..but most times is because I simply prefer don´t to have a previous image from target into my brain. .. Well..maybe it can be so simple as I am an outsider ?... uh ?
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Sometimes, hunting in catalogues for "different" or unusal imaged targets can gave us little surprises.. LDN1188 is a dark cloud complex towards the Cepheus Region. It is part of a giant ring around the Cep OB2 association.Estimated distante of this cloud is 910 pc and with an estimated mass of 1800 Suns..Star forming activity of LDN1188 has been investigated in several paper,as recent as 2013. 601 YSO (Young Stellar Objects) candidates were identified towards the LDN 1188 infrared dark cloud, located in 91 groups, from which 37 have 4 or more members, 371,180 and 50.. Also of interest if DG180 (LBN 496) a blue nebula (similar to IRIS) inmersed into the red/yellow dust... RNO 140,RNO 141 can be seen near the center of image. At upper right corner a little red galaxy (PGC 97260) can be identified.. More resolution link: http://afesan.es/Deepspace/LDN%201188,DG180%20(LBN%20496),PGC%2097260%20(Cepheus)_jpg_orig.html Clear skies¡
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Congratulations Lukas ¡¡ A very nice work. Great effort--¡ CS Antonio
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LDN 1188,DG180 (LBN 496),PGC 97260 (Cepheus)
afesan posted a gallery image in Members Albums Category
From the album: SPAG Monfrague Remote Observatory
LDN1188 is a dark cloud complex towards the Cepheus Region. It is part of a giant ring around the Cep OB2 association.Estimated distante of this cloud is 910 pc and with an estimated mass of 1800 Suns..Star forming activity of LDN1188 has been investigated in several paper,as recent as 2013. 601 YSO (Young Stellar Objects) candidates were identified towards the LDN 1188 infrared dark cloud, located in 91 groups, from which 37 have 4 or more members, 371,180 and 50.. ALso of interest if DG180 (LBN 496) a blue nebula (similar to IRIS) inmersed into the red/yellow dust... RNO 140,RNO 141 can be seen near the center of image. ALso at upper right corner a little red galaxy (PGC 97260) can be identified.. Credits : G.Marton, E.Verebélyi,Cs.Kiss,J.Smidla http://arxiv.org/pdf/1309.3299v1.pdf -
Excellent colour version ¡¡¡. I worked this nebula in the year 2010..but just the Ha version: http://afesan.es/Deepspace/SH2-113-114_jpg_orig.html Cheers¡ Antonio
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Nice results for just 5 subframes of 5 minutes each. It seems to me you´re into the right direction ,Luke. I will use some hours of Luminance and in colour. I just think in hours when imaging ..But is a nice image... As in reference to M33... to me is only M33 or the Triangulum galaxy. The Whirlpool I think is used for M51 .. ( or also Lord Rose) galaxy... Regards¡ Antonio
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IC 4954,also know as the Little Ghost Nebula, is a reflection nebula in the constellation Vulpecula. Located 6000-8,000 light-years , this nebula is part of a larger system of newly formed stars. Stars in this area are roughly estimated 4 million years old. A more resolution image: http://afesan.es/Deepspace/IC%204954,4955%20(Vulpecula)_jpg_orig.html CS Antonio
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From the album: SPAG Monfrague Remote Observatory
IC 4954,4955 (Vulpecula) * May 2014 * ASA N12 astrograph (f/3.6,1078mm) * DDM85 mount * FLI ML8300 at -25ºC * LRGB Optec filter set * L: 264m R:110m G:90m B:110m * Unguided * IC 4954,also know as the Little Ghost Nebula, is a reflection nebula in the constellation Vulpecula. Located 6000-8,000 light-years , this nebula is part of a larger system of newly formed stars. Stars in this area are roughly estimated 4 million years old. -
Congratulations¡
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Mark... the astrophotography sometimes seems to me a masochist hobby .. Hours and hours of imaging..just to barely take off some minor signal from the background noise. Crazy ¡¡ isn´t it ?.. Antonio
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Very probably this is the first amateur image taken over this target. .. 3C400.2 SNR is a 30' apparent widefield SNR located at an estimated distance of 6 kpc into Sagitta constellation. It´s extremely faint and weak ,to complicate it furthermore... it´s amidst a very crowded and rich stellar field.. 33,5 hours were invested between June-July just to raise up some signal and filaments from the background. I hope this image encourage some other amateurs to image some other diificult targets....that just 10 years ago was only within reach of professional astronomers.. Thanks to Mr. Sakib Raasol for the information and motivation that makes me to try this target. More resolution ( 2500x1900) image and information: http://afesan.es/Deepspace/slides/SNR%203C4002%2CPN%20G053.1-02.1%20%28Sagitta%29.html CS Antonio
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From the album: SPAG Monfrague Remote Observatory
Very probably this is the first amateur image taken over this target. .. 3C400.2 SNR is a 30' widefield located at an estimated distance of 6 kpc into Sagitta constellation. It´s extremely faint and weak ,to complicate it furthermore... it´s amidst a very crowded and rich stellar field.. 33,5 hours were invested between June-July just to raise up some signal and filaments from the background. I hope this image encourage some other amateurs to image some other diificult targets....that just 10 years ago was only within reach of professional astronomers.. Thanks to Mr. Sakib Raasol for the information and motivation that makes me to try this target. -
Seems to be a promising work in progress. ¡. I will wait for the ending result ..As you can guess: these galaxies will be consider as little treasures to my eyes.. Not seen ever.... Thanks for showing¡ Antonio
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Congratulations ¡ . Nice test Luke, Things seen to be going on...right?- Antonio
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I made a full resolution test in an exceptionally steady night, past April,2014. ASA N12 with a FLI Ml8300 cameras gives a 1.03" image resolution.r This is a minimal processing skill of 18x 12 minutes subframes.I had this image forgotten into an old directory into the deep of PC hard disk ( in other words.. next to trash it ).. Full resolution is 3298 x 2479 pix..linked here: http://afesan.es/Deepspace/NGC%204631,%20NGC%204656%20%20Full%20resolution%20test%20(Canes%20Venatici)_jpg_orig.html I hope all we can enjoy summertime.. Regards, Antonio
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NGC 4631, NGC 4656 Full resolution test (Canes Venatici)
afesan posted a gallery image in Members Albums Category
From the album: SPAG Monfrague Remote Observatory
Full resolution test made in an exceptionally April 2014 steady night .. Just 18x12 minutes in L filter. Minimal procesing .