Messier 14 ... NGC 6402
(Click on Picture for larger view)


Added August 23, 2019 ...
Messier 14 ... NGC 6402 ... is a globular cluster located in the constellation Ophiuchus. It is 30,300 light-years from Earth making this one of the more distant Messier globulars. It contains about 150,000 stars with the cluster about 13 billion years old (as compared to the sun's age of 3.4 billion years), a reason for the golden colors. This cluster is medium high in the south at sunset in middle August. I was only able to acquire 20 minutes of data due to passing clouds.

The Techy Stuff ... For those who want to know ...
Telescope: Orion 190 mm f/5.3 Maksutov-Newtonian Astrograph
Mount: Celestron AVX
Mount controls: Celestron PWI V2.1.25
Camera: Altair #Hypercam 294c Pro TEC
Camera sensor temperature setting: 32F (0C)
Filter: Altair #QuadBand OSC Light Pollution
Capture software: #SharpCap Pro V 3.2
Guiding: PHD 2 (RMS error: 0.24 ... i.e. very good tracking)
Mount controls: Celestron PWI V2.1.25
Polar Alignment: QHY Pole Master
Light Frames used: 10 at 120 seconds / Gain: 15,000
Binning: 1x1
Dark Frames: 40
Bias Frames: 40
Stacked in Deep Sky Stacker V 4.2.2
Post Processed in PixInsight and Photoshop CC
Seeing Conditions: 8 (0-10, where 0 is total cloud cover)
Moon: No Lunar Interference
Bortle Light-Pollution zone: 4.5 (can barely see the Milkyway)
Air Temperature: 81F
Date: August 23, 2019
Location: Backyard, Savannah GA


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