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| 307 files in 32 albums and 1 categories with 3 comments viewed 374577 times |
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Messier 371075 viewsMessier 37 is an open cluster found in the constellation Auriga. The brightest star is a red giant (the cluster contains about 35), which is visible in the image near the center of the cluster (magnitude 9.1 – 9.2). The distance to this cluster is about 4500 light-years, although it may be a bit further. Image taken with a TeleVue 140 f/5 refractor and a SBIG ST2000xcm camera at – 20 degrees on an Astro-Physics 1200 mount (6.5 hr total exposure; 39 x 600 sec lights, 20 darks, 64 flats, 64 bias; Image acquisition with MaxIm DL and processed with PixInsight 1.8.1.1092 Ripley (x64).
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A Tale of Two Stars1476 viewsHere are basic spectra from two familiar stars in the night sky. Vega's spectra is on the left and basically has weak spectral lines based mostly on the Hydrogen Balmer series. This is indicative of a fairly young, hot star. Betelgeuse's spectra is far more complex. We can see spectral lines for Barium, Calcium, Iron and Magnesium and compounds like Vandium Oxide and Titanium Oxide indicative of a star near the end of its life. Data collected with amateur equipment and processed through RSpec software.
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NGC 891 in Andromeda1152 viewsNGC 891 is an edge-on spiral galaxy found in the constellation Andromeda. Current estimates put NGC 891 30 to 31 million light-years away from us. A prominent dust lane can be easily seen in the galaxy. Numerous other small galaxies can be seen in the background including a faint galaxy to the right of the central bulge. Image was a total of 8 hrs of combined exposure taken over 6 nights (32 x 15 min lights @ -20 degrees C, dithered; 32 darks; 128 bias; 128 flats) taken with a TeleVue 140 f/5 refractor and SBIG ST2000xcm camera on an Astro-Physics 1200 mount. Image acquisition and guiding with MaxIm DL 6.07 and image calibration, registration, integration, and processing with PixInsight 1.8.3.1123 Ripley (x64).
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The Great Nebula in Orion2045 viewsMessier 42 in the constellation Orion is a star forming region in our galaxy, the Milky Way. It is a difficult object to photograph because of it's large variation in brightness. The attached is an image of M42 that is a combination of multiple stacked 10 second, 30 second, 60 second, 150 second, and 300 second exposures using Photoshop's High Dynamic Range tool ( Canon 20Da DSLR and an Astro-Physics 130mm f/8 refractor).
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Lynds Dark Nebula 6732532 viewsLynds Dark Nebula 673 is found in the constellation Aquila. Unlike bright emission or reflection nebula, dark nebulae are essentially a dense cloud of gas and dust particles that block the light of stars behind it from our view. In this case, the light of stars in our Milky Way galaxy is blocked from view. Stars that do shine through often appear red due to the scattering of light by the dust particles. Total exposure of the image is 3.5 hrs (42 x 5 min).
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Dumbbell Nebula (M27)912 viewsThe Dumbbell Nebula (M27) is a planetary nebula in the constellation of Vulpecula. It is the second brightest planetary nebula in the night sky and easy to spot with binoculars or a small telescope. Taken September 5, 2016 with a Canon 60Da camera, Orion ED80T telescope on a Celestron CGEM mount. Stacked with Nebulosity 4.0 and processed with PixInsight 1.8
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Messier 78 in the constellation Orion1295 viewsMessier 78 is a reflection nebula that is a part of a larger complex of nebulae in the constellation Orion . Several other reflection nebulae are seen in the image along with large clouds of dust (dark molecular cloud Orion B). Image is a total of 6 hr 50 min exposure (41 x 10 min lights @ -20 degrees; 20 darks, 64 flats, 64 bias) taken with a SBIG ST2000xcm CCD camera and a TeleVue 140 f/5 refractor on an Astro-Physics 1200 mount. Image acquisition software MaxIm DL; grading, calibration, registration, integration, processing with PixInsight 1.8.2 with final adjustment in Adobe Photoshop CC.
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Space Shuttle Endeavour1070 viewsTook a tour of the Endeavour exhibit in Los Angeles, CA. For more images of the shuttle, check out our AAG Facebook photo album. Endeavour flew to the Hubble Space Telescope on servicing missions and to the International Space Station and installed the Alpha Magnetic Spectrometer.
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“37” Open Cluster in Orion61 viewsThe open cluster 2169, often called the 37 cluster or Shopping Cart cluster, is found in the constellation Orion. It was arguably discovered by Giovanni Batista Hodierna before 1694 and was independently discovered by William Herschel in 1784. Combined exposure was 2.7 hr through an Takahashi Epsilon-180ED f/2.8 astrograph with a SBIG STC-7 camera mounted on a Paramount ME on the night 16 March 2022 in Mayhill, NM (20 x 160 sec B, 20 X160 sec G, 20 X 160 sec R, Medium Gain, sub-exposure 10 sec, MaxIm DL Stack ProTM). All images calibrated, registered, and integrated with PixInsight 1.8.8-9 Ripley (x64).Apr 16, 2022
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Arp 270 in Leo Minor65 viewsArp 270, a pair of galaxies with connected arm NGC 3395 and NCC 3396, lies in the constellation Leo Minor. The image of NGC 3395 appears disturbed and a bridge extends from it to NGC 3396. The image is a total of 3 hours exposure with a 12.5 inch RCOS f/9 operating at f/6 (Astro-Physics CCDT67) with a SBIG STF8300m mounted on a Paramount taken on the nights of 26 Feb and 5 Mar 2019 in Mayhill, NM (9 x 1200 sec Lights, 128 Bias, 128 Flats, 22 Darks all @ -15 degrees C). Processed with PixInsight 1.8.8-12 Ripley (x64).Feb 11, 2022
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A Spiral Galaxy in Leo198 viewsMessier 66, aka M66 or NGC 3627, is a spiral galaxy (semi-barred) found in the constellation Leo. M66 belongs to a group of galaxies including M65 and NGC 3628 known as the Leo Triplet. In the past, it is likely that M66 that encountered NGC 3628. M66 lies around 31 to 33.5 million light-years from us. Image is a total of 10 hr 40 min combined exposure taken with a Takahashi CCA-250 f/5 astrograph with a QSI683wsg CCD camera mounted on a Paramount ME on the nights of 28, 29 March, 3, 29 May 2019 and 15, 26 April 2020 in Mayhill, NM (19 x 1200 sec Lum; 4 x 1200 sec R; 5 x 1200 sec G; 4 x 1200 sec B all at -20 degrees C.; 128 Bias; 22 Darks; 128 Flats for LRGB, respectively). Processed in PixInsight 1.8.8-7 Ripley (x64).Apr 10, 2021
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The Ring Nebula in the Constellation Lyra207 viewsM57, the ring nebula, is found in the constellation Lyra. M57 is a planetary nebula, which is an expanding shell of gas ejected from a star in the later stages of its evolution. The image captured the outer halo structure of M57 as well as the galaxy IC 1296 (see annotated image on the Facebook page). Image is a total of 9 hr 20 min exposure taken through a 12.5†RCOS f/9 astrograph at f/6 (Astro-Physics CCDT67 reducer) with a SBIG STF8300m CCD camera on a Paramount ME on the nights of 18, 19, 22 May 17, 19 June 2020 in Mayhill, NM (13 x 1200 s lights, 5 x 1200 s blue, 5 x 1200 s red, 5 x 1200 s green all at -15 degrees C). Processed in PixInsight 1.8.8-6 Ripley (x64).
Mar 17, 2021
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Jan 2019 lunar eclipse661 viewsJanuary 20, 2019 lunar eclipse taken with Borg 71FL refractor and Canon 1000D DSLR on a Vixen alt-az mount. Single exposure 0.8 sec, ISO 400Jan 22, 2019
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The Perseus Cluster of Galaxies713 viewsThis image of the Perseus cluster of galaxies, also known as Abell 426, is centered on NGC 1275. NGC 1275 is a giant elliptical galaxy, which is a radio source and x-ray emitter. Abell 426 is part of the Pisces-Perseus supercluster, which contains over a thousand galaxies. The image is a total of 9 hrs exposure with a Takahashi CCA-250 f/5 astrograph and a QSI683wsg camera (Astrodon Gen2 filters) on a Paramount ME taken on the nights of 7 Nov, 3, 13 Dec 2018 in Mayhill, NM (18 x 1200 sec lights; 3 x 1200 sec R, G, and B at -20 degrees; 24 darks; 128 flats; 128 bias). Processed with PixInsight 1.8.5.1353 Ripley (x64).Jan 18, 2019
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Open Cluster in Cassiopeia 655 viewsThe open cluster NGC 663 is found in the constellation Cassiopeia. NGC 663 contains a significant number of Be stars (spectral class B stars showing emission lines in their spectra). The distance from us is on the order of 2,100 parsecs (6850 light years). The image is a total of 5 hrs 20 min exposure taken with a 12.5†RCOS f/9 @ f/6 (Astro-Physics CCDT67) and SBIG STF8300m camera on a Paramount ME in Mayhill, NM on the nights of 28 Nov and 3 Dec, 2018 (6 x 1200 sec R; 5 x 1200 sec G & B; 24 darks; 128 bias; 128 flats). Processed in PixInsight 1.8.5.1353 Ripley (x64).Jan 18, 2019
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A Large Emission Nebula in Cassiopeia688 viewsNGC 281 is a H II emission nebula in Cassiopeia containing the open cluster IC 1590, which powers the ionization of the hydrogen gas. Large dust filaments as well as Bok globules, which may be the site of future star formation, can be seen. The image is a total of 5 hrs 20 min exposure in H alpha light. Image taken with a Takahashi CCA250 astrograph and QSI683wsg camera on a Paramount ME on the nights of 13, 15 Dec, 16 Nov 2018 in Mayhill, NM (16 x 1200 sec lights @ -20 degrees C. Astrodon H alpha filter 5 nm bandwidth; 24 darks; 128 bias; 128 flats). Processed with PixInsight 1.8.5.1353 Ripley (x64). Oct 19, 2018
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