Tag Archives: Sagittarius arm

M8 and M20 – Lagoon and Trifid Nebulae


If you are in dark skies and can see the Milky Way streaming up from the horizon, you may notice a black area with two little fuzz balls in it that look like puffs of steam. If you are in suburbs or cities, you may notice just a fuzzy star above the spout. The fuzzy star or fuzz balls are the Lagoon and Trifid nebulae, or Messier Objects 8 and 20. You are seeing two star-forming regions toward the heart of our galaxy.

The Trifid is a little dimmer than the Lagoon. Trifid got its name because in photographs it has three distinct lobes. The Lagoon got its moniker because it looks like a round pool just outside the ocean of the Milky Way.

Imaging telescopes or lenses: Orion ED80T-CF
Imaging cameras: Nikon D7100
Mounts: Skywatcher AZ-EQ6 GT
Guiding telescopes or lenses: Orion 50mm mini guidescope
Guiding cameras: Orion Star Shoot autoguider (SSAG)
Focal reducers: TeleVue 0.8x Photo Reducer/Flattener TRF-2008
Software: Adobe Lightroom 5, StarTools64, PHD Guiding, Luc Coiffier DeepSkyStacker
Dates: Sept. 26, 2013
Frames: 6×300″
Integration: 0.5 hours

Author: Vincent_Bellandi
AstroPhotography of the day by SPONLI 25 May 2014

Nebulae of Sgr OB5 association

b92f395a002aea5bfaa031e50ce55456.1824x0_q100_watermark_watermark_opacity-10_watermark_position-6_watermark_text-Copyright Dean SalmanComplex of HII regions located in the Sgr OB5 association in the Sagittarius arm.
Sh2-19 is located in the middle of the image with Sh2-16 located to the lower right. In the middle of those two lies Sh2-18. Sh2-20 can be seen in the upper left and most of Sh2-17 is in the upper right.

Imaging telescopes or lenses: Intes Micro MN84
Imaging cameras: QSI 583 wsg
Mounts: Astro-Physics 1200 GTO
Guiding cameras: Starlight Xpress Lodestar
Software: PixInsight, Adobe Photoshop CC
Filters: Astrodon H-alpha 3nm narrowband filter, Astrodon RGB filter set
Dates: May 18, 2013
Astrodon H-alpha 3nm narrowband filter: 18×1200″
Astrodon RGB filter set: 72×600″
Integration: 18.0 hours

Author: Dean Salman

AstroPhotography of the day by SPONLI
16 April 2014