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afesan

Beta Tester
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Everything posted by afesan

  1. Impressive, Lukas... BTW: Maybe I could have a "Veloce"+DDM60 neighbourgh ( 100Km) from my observatory ???..close to Monfragüe..SW of Spain ...
  2. Thanks for showing, Mark !!..I love galaxy clusters..
  3. afesan

    Nova in M31

    Fanatstic ¡¡. Great work
  4. During October- November I has been collecting some hours of this interesting and forgotten area in Taurus: Seems to me he "Shrek" head More info and resolution : http://afesan.es/Deepspace/slides/DG%2041%20%28GN%2004.32.08%2C%20Magakian%2077%29%2C%20HH%20434%2C435%2C436%2CLDN%201536%20%28Taurus%29.html Have a nice weekend. Antonio
  5. From the album: SPAG Monfrague Remote Observatory

    DG 41 (also named GN 04.32.08, Magakian 77, Bernes 83) is a reflection nebula embbeded into a cloud of dust,close to LDN 1536, into the Taurus constellation. Central star is a variable T tauri ( V* V1025 Tau ),also know as CoKu (Cohen+Kuhi) HP Tau G2.Close to it is CoKu HP Tau G3 -- Young Stellar Object.. The best fit yields a distance of 161.2±0.9 pc, suggesting that the eastern portion of Taurus (where HP Tau/G2 is located) corresponds to the far side of the complex. Magakian 77 is classified as a cometary Nebula into the Magakian catalog. The whole of the Taurus region (a total area of 52 deg2) has been observed by the Herschel Spectral and Photometric Imaging Receiver (SPIRE) and Photodetector Array Camera and Spectrometer (PACS) instruments at wavelengths of 70, 160, 250, 350 and 500µm as part of the Herschel Gould Belt Survey. (At the upper right side, over the star TYC 1829:747) While carrying out a wide-field survey of nearby star-forming regions for Herbig-Haro (HH) objects three Herbig-Haro objects were discovered in 2001:, HH 434-436, in a ~2'x2' (0.08x0.08 pc) region near LDN 1536. HH 434 consists of three knots. HH 435 shows a bow shock shape, and HH 436 is an elongated patch. Spectroscopic observations indicate that the excitation levels of HH 434-436 are different: HH 436 has a high excitation level, while 434A has an intermediate, and 435 has a low excitation level. The overall morphology of HH 434-436 shows a bow shock shape and suggests that HH 434-436 may be a single bow shock fragmented into separate knots. Compiled/resumed by Antonio F.Sánchez. Many thanks to Mr. Sakib Rasool for suggesting me to image this area. Bibliography: Dorschner & Gürtler (1963) Untersuchungen uber Reflexionsnebel. Struve & Straka (1962) Notes on diffuse galactic nebulae. Magakian T. Yu. (2003) VLBA determination of the distance to nearby star-forming regions. III. HP TAU/G2 and the three-dimensional structure of Taurus. TORRES R.M.; LOINARD L.; MIODUSZEWSKI A.J.; RODRIGUEZ L.F. Herbig-Haro objects HH 434-436: part of a giant flow driven by the central source A/B of IRAS 04325+2402? WANG H.; YANG J.; WANG M.; DENG L.; YAN J.; CHEN J. Deep imaging surveys of star-forming clouds. V. New Herbig-Haro shocks and giant outflows in Taurus. BALLY J.; WALAWENDER J.; REIPURTH B.
  6. afesan

    TGU H774 P19

    A very rare and interesting zone,close to the border Cassiopeia-Cepheus and some degrees apart from the well-known NGC 7822 nebula. This area is dominated by the dark nebula TGU H774 P19, breaking the background (* Tokyo Gakugei University Catalog) and the deep blue vdB 2 reflection nebula. Plenty of interstellar matter,patches of grey and brown dust all around, blurring light of stars and the whole image, even crossing the dark TGU nebula in lanes. Close to the center of image, blue star Tycho 4026:499 is the emission star HBC 328, with a dusty red lane. The orange K2 spectral type HIP 1200 star dominates the bottom area and in the upper left corner, over vdB 2, the variable type Orion stars, GCVS V0511 Cass and GCVS V0510 Cass (also emision star HBC 326, Herbig-Bell catalogue, with a red dim nebulosity ) are distinctive.HIP 1021 star has a faint blue nebulosity around.There are also numerous radiosources in the area.(X-ray) Info Credits: Antonio F. Sánchez More resolution and acquisition info: http://afesan.es/Deepspace/slides/TGU%20H774%20P19%2CvdB%202%2CLBN%20590%2CV%20V510%20Cas%20%28Cassiopeia%29.html
  7. Congrats, Ron.! They published also an image taken by me some days ago. Interesting webpage. ;-)
  8. From the album: SPAG Monfrague Remote Observatory

    A very rare and interesting zone,close to the border Cassiopeia-Cepheus and some degrees apart from the well-known NGC 7822 nebula. This area is dominated by the dark nebula TGU H774 P19, breaking the background (* Tokyo Gakugei University Catalog) and the deep blue vdB 2 reflection nebula. Plenty of interstellar matter,patches of grey and brown dust all around, blurring light of stars and the whole image, even crossing the dark TGU nebula in lanes. Close to the center of image, blue star Tycho 4026:499 is the emission star HBC 328, with a dusty red lane. The orange K2 spectral type HIP 1200 star dominates the bottom area and in the upper left corner, over vDB2, the variable type Orion stars, GCVS V0511 Cass and GCVS V0510 Cass (also emision star HBC 326, Herbig-Bell catalogue, with a red dim nebulosity ) are distinctive.HIP 1021 star has a faint blue nebulosity around.There are also numerous radiosources in the area.(X-ray) Info Credits: Antonio F. Sánchez
  9. Thanks Mark. Glad you like it. This time I tried to go deep ... Regards, Antonio
  10. Confusion about this nebula. Different catalogs and different criteria about it´s nature. Close to the well know "Pacman" (and surely this is the reason which "eclipsed " and ignored NS2 to astrophotographers).. it´s a rare imaged area.by Bernhard Hubl and Rick Johnson , imaged it in the past and I tried to show the dusty enviroment and galaxies showing here and there.. A heavy light trace cross the image in diagonal.This is the result of the close 2.21 magnitude star Alpha Cassiopeia (Shedar)..No way to avoid it .. More resolution (2400x1800) and more detailed information http://afesan.es/Deepspace/slides/NS2%2CLDN%201299%20%28Cassiopeia%29.html The image was acquired with Autoslew, Sequence, MaximDL and all 8 minutes subframes ( about 130x 8 minutes subframes L+R+G+B ) unguided. Thanks for looking Clear skies Antonio SPAG-Monfrague Observatory Extremadura (SPAIN)
  11. afesan

    NGC7538 Region

    This is a really nice job, Ron. Congrats !
  12. afesan

    NGC 7424

    A great example of spiral galaxy.. Nice view !
  13. afesan

    Pacman Ha

    Splendid detail. Ron ..
  14. From the album: SPAG Monfrague Remote Observatory

    Thanks to Mr. Sakib Rasool for suggesting to image this interesting area..The image is crossed diagonally by a trace of light coming from the close 2.21 magnitude star Shedar (Alpha Cas.) The objects of the GN catalogue (Atlas of Galactic Nebulae), are often very dim and not very interesting for astrophotographers. But this is not true for all GN objects. A very nice example is GN 00.42.0 in Cas. This bipolar nebula was discovered by Neckel & Staude in 1984. This is the reason for it's alternative designation: NS 2,DG4,Magakian 13 Credits(Bernhard Hubl) ____________________________________________________ You don't get much more obscure than this nebula. It isn't listed in either NED nor SIMBAD yet is quite a good nebula for imaging. It goes by several rather obscure names such as Magakian 13 and NS 2. It is also in the Galactic Nebula catalog of galactic nebula a catalog of most other galactic nebula catalogs under the designation GN 00.42.0. Oddly SIMBAD contains many entries from the GN catalog. Most are fainter than this one so why did they miss it? I've seen it described as being a bi-polar nebula but I'm not seeing that in my image. Others call it simply a reflection nebula and one source said "Cometary Nebula?" The nebula is located in Cassiopeia about 1.4 degrees southeast of the far more famous NGC 281 PacMan nebula. In fact it was a wide angle shot of that nebula I saw that first introduced me to this nebula's existence. To further confuse the issue the Deep Sky Observer's Companion lists it under the name DG 4 which is in SIMBAD but SIMBAD puts it at different coordinates over 1.5 degrees away. The POSS server shows nothing at the SIMBAD location for DG 4. One object in the image most sources do include is LDN 1299 which, while centered a bit below this object is listed as being 4.5' across and thus includes this nebula. So for those wondering how to find it use LDN 1299. It's the easiest way. Credits: (Rick Johnson)
  15. Last photograph of an unusal imaged area: More resolution and detailed info : http://afesan.es/Deepspace/slides/LBN%20248%2C%20HH425%20%28Cygnus%29.html Regards, Antonio
  16. From the album: SPAG Monfrague Remote Observatory

    BN 248,Herbig-Haro 425 (Cygnus) * August 2015 * ASA N12 astrograph (f/3.6, 1078mm) * DDM85 ASA mount * FLI ML8300 * LRB Optec filter set * L:410m R:170m G:160m B:200m * Unguided * Herbig–Haro (HH) objects are small patches of nebulosity associated with newly born stars, and are formed when narrow jets of gas ejected by young stars collide with clouds of gas and dust nearby at speeds of several hundred kilometres per second. Herbig–Haro objects are ubiquitous in star-forming regions, and several are often seen around a single star, aligned with its rotational axis. HH objects are transient phenomena, lasting not more than a few thousand years. They can evolve visibly over quite short astronomical timescales as they move rapidly away from their parent star into the gas clouds of interstellar space (the interstellar medium or ISM). Hubble Space Telescope observations have revealed the complex evolution of HH objects over the period of a few years, as parts of the nebula fade while others brighten as they collide with clumpy material of the interstellar medium. The objects were first observed in the late 19th century by Sherburne Wesley Burnham, but were not recognised as being a distinct type of emission nebula until the 1940s. The first astronomers to study them in detail were George Herbig and Guillermo Haro, after whom they have been named. Herbig and Haro were working independently on studies of star formation when they first analysed the objects, and recognised that they were a by-product of the star formation process. LBN 248 is a very interesting and strange reflection nebula surrounding the low part of the photograph. This area is rarely imaged. Thanks to Mr. Sakib Rasool for suggesting this target. . Information credits: Reipurth B. (1999). "A General Catalogue of Herbig–Haro Objects,".Wikipedia.
  17. And much more.... :-) http://entreencinasyestrellas.es/web/ Hope this information could be useful.( BTW: Just info: I don´t have any commercial interest here.. )
  18. Last image taken along August , in regular sky conditions... More info and detail: http://afesan.es/Deepspace/slides/LBN%20331%2CDWB%20177%2CDWB%20178%2CDWB%20179%2C%20V1488%20Cyg%20%28Cygnus%29.html Enjoy end of summertime (northern guys... ).. Clear skies, Antonio
  19. afesan

    IC5068

    Lovely colour !.
  20. From the album: SPAG Monfrague Remote Observatory

    This image is dominated by the emission nebula known as LBN 331. The bright star central in the image is 32 Cygni. 32 Cygni is a binary star system (32 Cygni A and . The orbital plane of the two stars is nearly aligned with the line of sight to Earth. This alignment from Earth's viewpoint becomes an eclipsing variable star system known as V1488 Cyg (1147 day cycle). This emission nebula lies (visually) in a dense star region of the Milky Way. This field is also well represented in the DWB catalog - the brighter filaments of LBN 331 also have the DWB designations of DWB 179, 178, 177. (Credits: Jim Thommes) Omicron-2 Cygni is an orange supergiant star in the constellation Cygnus. At 1,040 light years away, it is the 498th brightest star in the Earth's sky, where it shines at an apparent visual magnitude of 3.96. Omicron-2 Cygni is the primary component of a multiple-star system. The iron abundance of Omicron-2 Cygni is -0.33 (46.8% of the Sun). It is moving through the Galaxy at a speed of 10.2 km/s relative to the Sun. Its projected Galactic orbit carries it between 24,000 and 28,000 light years from the center of the Galaxy. Common designations: Omicron-2 Cygni, 32 Cygni, HIP 99848, HD 192909, HR 7751 (Credits: James. B. Kaler. Illinois University).
  21. Glad you like it, Luis !... We´ll see soon...sure. Clear skies ! Antonio
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