Michael A. Stecker
mastecker@gmail.com

 


 
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M20 taken with MAS's Celestron 11-inch (black tube) SCT at f/7 and cropped


M20 Trifid Nebula photographed with Michael Stecker's C-11 SCT black OTA at f/7
 The Trifid Nebula (M20) are adjacent red emission and blue reflection nebulae in the Sagittarius Milky Way, This is a joint collaboration of James Foster of Frazier Park Californiaand Michael A. Stecker of Los Angeles. My Celestron 11-inch black tube Schmidt Cassegrain telescope was used at f/7.  The image was cropped.
 file: M20masC11_110minEXP31May24b1cr1GxDNd7csm.jpg
 Click here for enlargement

Photographic Data
 Date:
May 31, 2024

 telescope:
Celestron 11-inch (black tube) SCT with Starizona 0.75x focal reducer/flattener
Aperture: 2,794 mm (11-inches)
 Focal Length with 0.75X reducer: 2,095 mm
Focal ratio with 0.75X reducer: f/7.5

mount:
Astro-Physics 1200 GTO

 imaging camera:
ZWO ASI6200MC-Pro color astro-camera.

exposure:
110 minutes (1.8 hours)
guiding:
off-axis
 
processing
Aquired and stacked by James Foster with Maxim DL & ASI Studio.
Post-processed in Adobe Photoshop Elements by Michael Stecker.
 .
photographic site:
James Foster's observatory at Frazier Park California
 https://en.wikipedia.org/wiki/Frazier_Park,_California
(Bortle 4 at 5,500 feet elevation)
 
 
 
M20 taken with Sky-Watcher Quattro 250P (10-inch Newtonian at f/4) and cropped

M20 crop with Sky-Watcher Quattro 250P, 10-inch f/4 Newtonian telescope.
file: M20-JRF-SWnewt250P-110minRGBSHARP3A-cr1-usm1.jpg