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Messier 20 (M 20, NGC 6514, Trifid Nebula) in Sagittarius
(move the mouse over thumbnails - please be patient until image downloads) |
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| 12" ASA: LRGB |
12" ASA: LRGB - 100% crop |
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| Size: 2000 px |
Size: 2000 px |
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| © Velimir Popov & Emil Ivanov 2013 |
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Messier 20 (catalogued also as NGC 6514, called Trifid Nebula) is an H II region in constellation Sagittarius. Its name means 'divided into three lobes'. This is an unusual combination of an open cluster of stars; an emission nebula (the central, red portion), a reflection nebula (the top, blue portion) and a dark nebula (catalogued as Barnard 85 which represents the apparent 'gaps' within the emission nebula that cause the trifid appearance). |
Object details
| Right Ascension |
18:02:23 (h:m:s) |
| Declination |
-23° 01:48 (deg:m:s) |
| Distance |
~ 5.2 (ly) |
| Apparent Dimension |
28 (arc min) |
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Image details
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ASA 12"
| Center of field RA |
18:02:34 (h:m:s) |
| Center of field DE |
-22:59:23 (deg:m:s) |
| Size |
57.4 x 43.2 (arcmin) |
| Pixel scale: |
1.03 (arcsec/pixel) |
| Orientation: |
Up is 177 degrees E of N |
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DCA 16"
| Center of field RA |
18:04:06 (h:m:s) |
| Center of field DE |
-23:01:20 (deg:m:s) |
| Size |
1.37 x 1.37 (deg) |
| Pixel scale: |
1.23 (arcsec/pixel) |
| Orientation: |
Up is 1.74 degrees E of N |
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| Charts and image details obtained from Astrometry.net |
ASA 12"
| Optic(s): |
ASA 12" f 3,6 Astrograph (ASA) |
| Mount: |
ASA DDM85 |
| Camera: |
FLI MicroLine 8300 CCD camera |
| Filters: |
Lum, Red, Green, Blue Astrodon |
| Dates/Times: |
From 16 of May 2013 |
| Location: |
Namibia-TIVOLI ASTROFARM, S 23° 27' 40,9" / E 18° 01' 02,2" |
| Exp. Details: |
L: 4x10min, R: 4x10min, G: 4x10min, B: 4x10min, Bin 1 |
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Total Exposure Time - 160 min (2:40 hours) |
| More details: |
Dark and flat frames reduction |
| Processing: |
PixInsight / PS |
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DCA
16"
| Optic(s): |
16" f3,75 Dream Corrected Astrograph (DCA) |
| Mount: |
Astelco NTM-500 direct drive mount |
| Camera: |
Apogee Alta U-16M CCD camera |
| Filters: |
Lum, Red, Green, Blue, Ha, OIII and SII Astrodon |
| Dates/Times: |
- |
| Location: |
Namibia-TIVOLI ASTROFARM, S 23° 27' 40,9" / E 18° 01' 02,2" |
| Exp. Details: |
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| More details: |
Dark and flat frames reduction |
| Processing: |
PixInsight / PS |
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| Copyright: Velimir Popov and Emil Ivanov 2013. All Rights Reserved |
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| e-mail: info@irida-observatory.org |
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