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Stars & Star Clusters
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PhotographerEitel MonacoLocationCinainnatiDateaugust 2011EquipmentMEADE RXC 400 16' SBIG ST8 XMEDescriptionThe Hertzsprung Russell diagram for M13 shows that the stars here have left the main secuence and transormed into red giants, leaving only a few hot blue stars, provinf the age of this object above 10 billion years. Star identification with Astroart 4. Ln Lum vs Ln B/R correlation in XL with Pavone's algorithm. |
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PhotographerStephan BockLocationFurtwangen, Black Forest, GermanyDate01 October 2011EquipmentCanon 1000d (modified), Sigma telephoto lens @135mm, f3.5, ISO 1600 mounted on a home made motorized barn-door. Stacked from 56 exposures à 60s = 56 minutes total exposure.DescriptionVisible is the area around "Herschel's Garnet Star" (Mu Cephei) with its emmision nebula dust bands and star cluster IC 1396. Mu Cephei is a variable red supergiant in the constellation of Cepheus and is visible in the center of the picture. |
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PhotographerAlson WongLocationUnited StatesDateDec. 17-18, 2011EquipmentNikkor 85mm/2 lens STL-11000M Astrodon LRGB filters Paramount MEDescriptionThis image is of the Hyades and Pleiades star clusters. Dust and dark nebulae are also visible in the image. |
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PhotographerEitel MonacoLocationGeneva SwitzerlandDate17 november 2011EquipmentMeade RCX400 16', with Sony digital camera and spectroscopy glassDescriptionIs it possible to do spectroscopy with 5$? Buy on line a 5$ filter for night illumination analysis, apply to the front of a digtal camera connected to the tescope, tilt it by 30 degreeand make a 10 seconds drift exposure, and you get great spectum of the stars' light. In Vega, a young star still burning H, it is possible to see the lines of HBeta, HGamma and HDelta in the blue part, and also the Ha in the red part, at the limit of the red sensitivity on my camera sensor. In the other older stas spectrum, where the H is now fused into heavvier elements, it is possible to see several other lines for elements like CH, CO,CN, MgH, ...etc. A lot of fun for 5 $! |
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PhotographerMarco AngeliniLocationBrallo di Pregola (ITALY)Date11-11-2011 1:00amEquipmentTelescope: Dall-Kirkham Astrograph 12" F/7.8 Mount: Fork mount Gemini MOFOD + Pulsar2 CCD: SBIG STX16803 Filters: Baader Planetarium LRGBDescriptionM45-PLEIADES LRGB Image of M45 - Open Cluster in Taurus. Acquisition by M. Angelini and F. Tagliani Image Processing by F. Antonucci L:R:G:B 90:40:40:40 |
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PhotographerToby DingleLocationLake Elsinore, CADate10/22/2011 19:39:12EquipmentThis image was captured using a Sony A580 DSLR piggyback mounted onto a Celestron Advanced GT Series C6-S Telescope on a Go To German Equatorial Mount. Camera settings were as follows: Focal Length - 75mm Shutter Speed - 24 sec. F Number - 2.5 ISO - 1600DescriptionI entered Albireo into the Go To feature on the telescope with the Sony A580 DSLR piggyback mounted. At 75mm focal length, I was able to image a large section of the Milky Way. |
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PhotographerEitel MonacoLocationGeneva SwitzerlandDateJuly 2011EquipmentMeade RCX 400 16", SBIG 8Xme with AOL, ALT AZ mount with derotatorDescriptionThe HR diagrams for globular clusters M13, M5 and M3 shows stars distribution out of the main sequence, with few blue bright stars, proving the age above 10 billion years of these clusters. M3 appears specifically low in numbers of hot blue stars, one of the oldest cluster. I was inspired by your article in S&T of December 2010, from R.J.Vanderbei, "Sequencing the Stars", so I started pointing my scope to GCs and calculating their HR diagrams. All cluster's pictures were taken in the same night, with the same exposure (LRGB 30MIN total) and same elaboration, to allow comparison. Maxim DL for elaboration, Astroart for star identification and PS for final display. Plenty of fun... |
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PhotographerEnrico AfricaLocationRancho Hidalgo, New MexicoDateApril 2011EquipmentTakahashi TOA-130F with flattener on an Astro-Physics 1200GTO mount. SBIG STL-6303 camera with STL-FW8 filter wheel and Astrodon LRGB filters. Self-guided using the STL-6303's built-in guide chip, positioned via an Astrodon Takometer camera rotator.DescriptionM53 and NGC 5053 in Coma Berenices come closest to being a double-globular cluster counterpart to the glorious Double Cluster in Perseus. I managed to snag this pair last April from my remote site at Rancho Hidalgo in New Mexico. Exposure Details: L: 9 x 10 minutes Binned 1x1 R: 5 x 10 minutes Binned 1x1 G: 5 x 10 minutes Binned 1x1 B: 5 x 10 minutes Binned 1x1 |
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PhotographerHenry MendtLocationMaracaibo, VenezuelaDateJune 11, 2011EquipmentGlobular cluster M22 C11 (f/10) SCT + tracking with Orion Atlas EQ6 Mount (without guiding) Sony DSRL A290 camera, ISO-800 , prime focus. Manually registered and stacked in Photoshop No calibration was made (no darks, no flats) Levels and curves adjusted in Photoshop. 5 stacked frames (30 sec. each) Maracaibo, Venezuela June 11th, 2011DescriptionGlobular cluster M22 in Sagittarius |
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PhotographerMaurizio CabibboLocationItaliaDateVia delle Querce 33EquipmentTakahashi FSQ106EDXIII guided with Orion SSA on Takahashi TOA130. Losmandy G11 mount. Canon 1000D modified Baader Planetarium. 11x5min. Petriolo (SI) ItalyDescriptionThe "Seven sisters" open cluster located in the constellation Taurus. |
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