M20

Trifid Nebula

M20

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Object Info

Type

Diffuse Nebula

Constellation

Sagittarius

Distance

5,200 ly

Capture Details

Date

July 1, 2011

Location

Palomar Mountain, CA

Exposure

Ha 6x10, Lum 6x5 (bin 1x1), R 3x5, G 3x5, B 3x5 (bin 2x2)

Equipment

Optics

Celestron C11 Carbon Fiber SCT w/XLT

Focal Length

1700mm @f/6

Mount

Astro-Physics 900GTO

Camera

SBIG ST-10XME

Focuser

Robo-Focus

Filters

CFW8A, Astrodon LRGB, 3nm Ha

Software

Maxim DL, CCDStack, Photoshop