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Contains:  IC 1275, NGC 6559, IC 1274, IC 4685, NGC 6544, NGC 6546, NGC 6530, M 21, NGC 6531, M 8, Lagoon nebula, Hourglass nebula, NGC 6523, NGC 6526, Trifid nebula, M 20, NGC 6514, The star 11Sgr, The star 9Sgr, The star 7Sgr, The star 4Sgr
Getting plate-solving status, please wait...
Sagittarius Triplet, 


            Roberto Colombari
Sagittarius Triplet

Sagittarius Triplet

Technical card

Resolution: 5438x4490 job: 2136690

RA center: 271.409 degrees

DEC center: -23.758 degrees

Pixel scale: 2.578 arcsec/pixel

Orientation: 97.605 degrees

Field radius: 2.525 degrees

Data source: Traveller


Sagittarius Triplet

Yesterday night I've been able to complete the second panel and merge it with the previous one.

Takahashi FS60c
CMOS camera
Pegasus Astro
Feather touch FTF2015BCR-RP

55x150s gain 12 per each panel


Explanation: These three bright nebulae are often featured in telescopic tours of the constellation Sagittarius and the crowded starfields of the central Milky Way. In fact, 18th century cosmic tourist Charles Messier cataloged two of them; M8, the large nebula right of center, and colorful M20 on the left. The third, NGC 6559, is below M8, separated from the larger nebula by a dark dust lane. All three are stellar nurseries about five thousand light-years or so distant. The expansive M8, over a hundred light-years across, is also known as the Lagoon Nebula. M20's popular moniker is the Trifid. Glowing hydrogen gas creates the dominant red color of the emission nebulae, with contrasting blue hues, most striking in the Trifid, due to dust reflected starlight. This broad skyscape also includes one of Messier's open star clusters, M21, just above and right of the Trifid.

Source: APOD [reviewed]



Roberto Colombari
License: None (All rights reserved)

Sky plot

Sky plot


Sagittarius Triplet, 


            Roberto Colombari

In these public groups

Imagers of Italy