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Antares/Rho Ophiuchi region
Date Taken: 05/10/2013
Photographer: Orion Staff
Location: Fremont Peak, CA
Other Telescope: Canon 200mm f.2.8L lens
Mount: Orion Sirius EQ-G Computerized GoTo Telescope Mount
Other Mount: Orion Narrow Side-by-Side Plate
Other Camera: Canon 500D modified
Processing: Backyard EOS for capture; DeepSky Stacker, Photoshop CS6 for processing
Exposure: 30 x 180s @ ISO 800, f/2.8
Other Equipment Used: Orion Magnificent Mini Deluxe AutoGuider Package

Looking like a colorful cosmic fireworks display, the area surrounding the stars Antares and Rho Ophiuchi, on the border between the constellations Scorpius and Ophiuchus, dazzles with colorful emission, reflection, and dark nebulosity and star clusters.


At left is the tri-star Rho Ophiuchus, surrounded by a blue reflection nebula called IC 4604. Dark dust lanes billow to the lower right of it. The bright yellowish star at lower right is 1st-magnitde star Antares in a pool of yellow emission and reflection nebulosity. Near the top of the photo, bathing in red emission nebula Sh2-9, is the bright star Sigma Scorpius. The big globular cluster M4 glitters in the upper right of the image, and if you look closely you'll see another, smaller globular to its lower left-that's NGC 6144.


This expansive region of the summer Milky Way is perfect for wide-field photography with a camera lens, in this case a 200mm focal-length lens.

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