Celestial hemisphere:  Southern  ·  Constellation: Sagittarius (Sgr)  ·  Contains:  13.09  ·  431 Nephele  ·  7 Sgr  ·  9 Sgr  ·  B296  ·  B85  ·  B88  ·  B89  ·  HD164018  ·  HD164030  ·  HD164068  ·  HD164146  ·  HD164171  ·  HD164193  ·  HD164194  ·  HD164226  ·  HD164265  ·  HD164266  ·  HD164294  ·  HD164384  ·  HD164385  ·  HD164386  ·  HD164402  ·  HD164452  ·  HD164453  ·  HD164492  ·  HD164514  ·  HD164515  ·  HD164534  ·  HD164535  ·  And 212 more.
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M8 and M20, two years later, Pedro A. Sampaio
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M8 and M20, two years later

Getting plate-solving status, please wait...
M8 and M20, two years later, Pedro A. Sampaio
Powered byPixInsight

M8 and M20, two years later

Equipment

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Acquisition details

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Description

After 7 MONTHS of cloudy nights, rain, and other inconveniencies that prevented me from imaging, I finally managed to do astrophotography again... And what better project than going back to a couple of objects I imaged 2 years ago when I just starting.

M8 and M20 are commonly imaged astronomical objects, and rightly so, as they're fantastically beautiful objects.. The nebulosity is also very bright, so not a lot of integration time is needed. On the other hand, there are several features that make this region hard to process. For one, it's set on an extremly dense star field, and proper star control is necessary to properly highlight the nebulosity. Also, the core of M8 (and to a lesser extent, M20), is very bright and is easily blown out (much like the core of M42). So some HDR multiscale composition is also useful.

Comments

Revisions

  • M8 and M20, two years later, Pedro A. Sampaio
    Original
  • M8 and M20, two years later, Pedro A. Sampaio
    B
  • Final
    M8 and M20, two years later, Pedro A. Sampaio
    C

B

Description: Mild adjustments - I increased the star field just a bit, without compromising the nebulosity,to make the image look more natural (this is in natural colors, after all). Also, I corrected a mild blue tint on the background with curves.

Uploaded: ...

C

Description: Revised the color balance and brought out the star field.

Uploaded: ...

Sky plot

Sky plot

Histogram

M8 and M20, two years later, Pedro A. Sampaio

In these public groups

Southern Hemisphere Astro