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M20 - Trifid nebula

The Trifid nebula is a combination of bright emission, reflection, and dark nebula located in the constellation of Sagittarius. It is estimated to be around 5,000 light years distant. This is reprocessed data from July 2017.

Technical specifications:

Astrotech 12'' RC

Camera: QHY9M CCD

Filters: Orion 2'' LRGB

Mount: AP900 GTO

Guiding: Meade DSI Pro II

Focus: Robofocus

Software: CCD Commander, Maxim DL, FocusMax 3, Photoshop CC 2018, Pixinsight 1.8.5

Date: 16-18 July, 2017

Exposure: Lum: 9x900'' bin1 RGB: 8x300''each bin1

Seeing: 3'' (average)

Total integration: 4 hours

Location: Asteria remote observatory, Hocking Hills OH

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