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Showing posts from July, 2026

Night - fifty eight - The Bow TIe Nebula

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Here is first image off of the Dwarf 3 from last night's imaging of the Bow Tie Nebula. The target is exceptionally tiny in the center of this field. Here is the cropped image of this nebula. This nebula formed when an evolved star entered its white dwarf phase of evolution and expelled its outer layers. As the star’s gaseous outer envelope moves away from the star, it is heated by the ultraviolet radiation from the stellar remnant to temperatures of about 10,000 degrees Celsius. As a result, the shell of ejected material becomes visible and glows as a planetary nebula. The Bow-Tie Nebula has the shape of a barrel, with two pairs of lobes near the poles. The lobes were created by additional ejections of material from the central star. The barrel-like main cavity is surrounded by a set of concentric rings visible in the optical and infrared bands. Ths Dwarf 3 scope is excellent but objects of this size fail to provide a great deal of reward. Just too small to say that ...

Night - Fifty seven - The Teddy Bear Nebula

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Not much written about this region. Here is what Rod Pommier said about his image which is directly below - "Sharpless2-171 is part of a bigger nebula, NGC 7822, in Cepheus. It is an emission nebula with elephant trunks, or pillars, carved by stellar winds of the hot bright stars within the nebula. However, to me, this nebula looks like a teddy bear staring straight at us from space. The two brightest stars are its eyes, it has large, round red ears, a brown nose, and an inverted V-shaped mouth line. Michael Bakich, photography editor of Astronomy magazine, agreed with me and published this image as “The Teddy Bear Nebula”." Here is his image: Here is my image: These are 60 second images and the Dwarf3 stacked 210 of those images over a period of 4 hours. On November 16th, 2011 this image of NGC7822 (Teddy Bear) graced the Astronomy Photo of the Day website:

Night - Fifty six - The Iris Nebula, CED 187, A reflection Nebula in Cepheus

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The Iris Nebula is a stunning reflection nebula notable for its flower-like appearance, complex structure, and rich chemical composition. Its central binary star illuminates the surrounding dust, creating a visually striking object that is both scientifically significant and a favorite among amateur astronomers and astrophotographers. This nebula is known for its rosebud-shaped structure and the young stars that have blown a large, irregular bubble in the surrounding molecular cloud.

Night - Fifty five - The Cocoon Nebula

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These images are of the Cocoon Nebula, a cluster of stars involved in a bright and dark nebula in the constellation Cygnus. The dark nebula Barnard 168 (B168) is an inseparable part of the experience, forming a dark dust lane that surrounds the cluster and projects to the right forming the appearance of a trail behind the Cocoon. The Cacoon Nebula is a stellar nursery where star-formation is ongoing. Observations by both the Spitzer Space Telescope and the Chandra X-ray Observatory have collectively identified hundreds of young stellar objects. In this image, the dust lane is visible off to the nebula's right. Final image zoomed in. This nebula qualified to be the image in NASA's Astronomy Photo of the day back in 2024 (image by Luis Romero Ventura).