ASTRO:
     type=Starscape with nebulae
     mag=6.3 (avg)
     const=Sagittarius
     dist=4100 ly
     size=138 ly (apart)
IMAGE:
     location=EB Driveway
     BrtlCls=4
     moon=6%
     exposure=CMOS OSC: 44x240s (2.9h), G100
     color palette=HOO
EQUIPMENT:
​     optics=ES102CF APO / Starizona "L" 0.65x rdcr, FL(eff.)=464mm, f(eff.)/4.55
     camera=ZWO ASI2600MC=Pro
     filter=Optolong L-eXreme DNB
     mount=Celestron AVX EQ
     guiding=Orion 60x240mm, ZWO ASI224MC
SOFTWARE:
     acquisition=Stellarium, NINA, PHD2
     processing=PixInsight (RCAstro), Photoshop (Lumenzia, APF-R, Websharp-Pro), LrC

In this image both M8 - the Lagoon, and M20 - the Trifid nebulae are framed together, indicating just how very close they are to one another in the night sky (appx 1.5 arc-degrees separated).  Because they are located in one of the richest and most dense star cloud structures in the Milky Way, the background surrounding them appears as a "sea" of dust, gas, molecular elements and stars.  Located adjacent to the core nucleus of the Milky Way, they are a truly beautiful sight to see whether by observation, or by astro-imaging.  These objects attract many amateur astrophotographers year after year.

From the northern hemisphere, these two (2) are considered to be summertime objects.  They first become visible in the early morning hours of March just before sunrise, and then progress to full evening views beginning in July and continuing through September.  They then retreat into the dusk of evening sunsets in early October, and finally disappear toward the end of that month, not to return until the early mornings of the following March.  For northern observers, an evening's viewing these beautiful objects is somewhat shortened by the fact that they reside south of the celestial equator, in the southern celestial hemisphere.  They quickly pass from east-to-west each evening on a low trajectory toward the south.

The Lagoon, being the larger of the two, is visible to the unaided eye in skies with low-to-moderate light pollution (Bortle class 2-4).  It is one of only two bright nebulae so easily seen.  The other is M42, the Orion Nebula which is a winter-time object from the northern hemisphere.

Look for the images, "230625  M20 Trifid nebula", and "240628 M8 Lagoon nebula" in this collection to see each with better detail and to read about each ones' astronomical heritage.

250722 - M8 "Lagoon" + M20 "Trifid" nebulae