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Saturday, October 27, 2018

ATEO-1 Zooms In On NGC 7094

Planetary nebulae are interesting deep-sky objects because they are very similar yet very different. ATEO-1 recently imaged NGC 7094. This relatively bright planetary nebula in the constellation Pegasus is embedded in this faint integrated flux nebula visible in this image cataloged as LBN152.

The primary exercise of imaging the nebula was to demonstrate how the Proline 16803 CCD camera that is attached to the 16" f/3.75 Dream Aerospace Systems astrograph remote online imaging telescope can not only capture a nice wide field but also have the capability of zooming into a deep-sky object without losing very much resolution. 

Planetary Nebula NGC 7094 in Pegasus cropped image on the 16" f/3/7 astrograph (ATEO-1) - Image by Insight Observatory.
Planetary Nebula NGC 7094 in Pegasus cropped image on the 16" f/3/7 astrograph (ATEO-1) - Image by Insight Observatory.

The image above is displayed at 100% and cropped for the purpose of concentrating on the planetary nebula itself. Below is the original sized field of view image of NGC 7094. 

Planetary Nebula NGC 7094 in Pegasus with original field of view on the 16" f/3/7 astrograph (ATEO-1) - Image by Insight Observatory.
Planetary Nebula NGC 7094 in Pegasus with original field of view on the 16" f/3/7 astrograph (ATEO-1) - Image by Insight Observatory.

The central star of this nebula belongs to the class of PG 1159 stars - hydrogen-deficient post-AGB stars on their way to the white dwarf cooling sequence. However, a fraction of them show small amounts of atmospheric hydrogen and are referred to as hybrid PG 1159 stars, which is the case for this object.

We look forward to all of our ATEO Portal users capturing planetary nebulae and displaying their unique characteristics.
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Saturday, October 13, 2018

The Pleiades and Triangulum Galaxy

Fall is the time of year when a few deep-sky gems make their way into the night sky once again. The Pleiades, Messier 45, and the Triangulum Galaxy, Messier 33, are on the long list. The Pleiades are also well known to the unaided eye as the Seven Sisters. That is how many stars can only be seen in this open star cluster under dark skies. The image below taken on Insight Observatory's Astronomical Telescope for Educational Outreach (ATEO-1) displays many many more stars in the cluster.

M45 - The Pleiades imaged at LRGB 600 sec, 2x2 bin on ATEO-1 by Insight Observatory.
M45 - The Pleiades imaged at LRGB 600 sec, 2x2 bin on ATEO-1 by Insight Observatory. 

The cluster is dominated by hot blue and luminous stars that have formed within the last 100 million years. A faint reflection nebulosity around the brightest stars was thought at first to be leftover from the formation of the cluster (hence the alternative name Maia Nebula after the star Maia), but is now likely an unrelated foreground dust cloud in the interstellar medium, through which the stars are currently passing.

Computer simulations have shown that the Pleiades were probably formed from a compact configuration that resembled the Orion Nebula. Astronomers estimate that the cluster will survive for about another 250 million years, after which it will disperse due to gravitational interactions with its galactic neighborhood.

M33 - The Triangulum Galaxy imaged on ATEO-1 at LRGB 600 sec, 2x2 bin by Insight Observatory.
M33 - The Triangulum Galaxy imaged on ATEO-1 at LRGB 600 sec, 2x2 bin by Insight Observatory.

The Triangulum Galaxy (also known as M33) is about 3 million light-years away from Earth. While its mass is not well understood, one estimate puts it between 10 billion and 40 billion times the sun's mass, what is known is it's the third-largest member of the Local Group or the galaxies that are near the Milky Way. Triangulum also has a small satellite galaxy of its own, called the Pisces Dwarf Galaxy.

Under dark sky conditions, M33 is just barely visible with the naked eye in the constellation Triangulum, just west of Andromeda and Pisces.
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Saturday, October 6, 2018

The Andromeda Galaxy Revisited and NGC 6822

Now that the ATEO Portal is complete and in full use for accessing imaging data on ATEO-1, we decided to revisit an old friend... M31, The Andromeda Galaxy. It was just a little over a year ago that we acquired our first image of our closest galactic neighbor. Insight's first image of M31 was a 60-second Luminance image taken remotely with TheSkyX software on the Raspberry Pi that controls the 16" f/3.75 Dream Aerospace Systems astrograph remote telescope. This was before the ATEO Portal was ready for beta testing.

M31 - "The Andromeda Galaxy" Imaged via Insight Observatory's ATEO Portal on it's 16" f/3.7 Remote Robotic Telescope (ATEO-1).
M31 - "The Andromeda Galaxy" Imaged via Insight Observatory's ATEO Portal on it's
16" f/3.7 Remote Robotic Telescope (ATEO-1). 

The latest image above was taken completely through the ATEO online access portal. This image, a bit more impressive, was taken on the morning of October 5th, 2018, with filters Luminance at 600 seconds along with Red, Blue, and Green at 300 seconds. All binning 2x2 and the image processing were done in PixInight and Photoshop CS6.

While the Andromeda Galaxy makes quite an impression, we thought why not image another galaxy of a completely opposite type. NGC 6822 was loaded into the Telescope Console on the ATEO Portal as a target as well. The specifications of this image are Luminance 300 Seconds, RGB 120s, and all 2x2 binning.

NGC 6822 - "Barnard's Galaxy" Imaged via Insight Observatory's ATEO Portal on it's 16" f/3.7 Remote Robotic Telescope (ATEO-1).
NGC 6822 - "Barnard's Galaxy" Imaged via Insight Observatory's ATEO Portal on it's
 16" f/3.7 Remote Robotic Telescope (
ATEO-1).

NGC 6822 (also known as Barnard's Galaxy, IC 4895, or Caldwell 57) is a barred irregular galaxy approximately 1.6 million light-years away in the constellation Sagittarius. Part of the Local Group of galaxies, it was discovered by E. E. Barnard in 1884, with a six-inch refractor telescope. It is one of the closer galaxies to the Milky Way. It is similar in structure and composition to the Small Magellanic Cloud and is about 7,000 light-years in diameter.

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