M92 - The Less Viewed Globular Cluster in Hercules

Messier 92 (M92) is a wonderful globular cluster of approximately 330,000 stars spanning 108 light-years in diameter.  This bright cluster can be spotted without a telescope under dark conditions but is often overshadowed by the bigger and brighter Great Hercules Cluster, M13, which is very close by.  I like the way this one looks when viewing through the eyepiece as it seems more well defined than M13.  Another interesting piece is that M92 is one of the oldest globular clusters in the galaxy at 14.2 billion years (sources: wikipiedia and Messier Objects).

Also, this object is the first color object I stacked using raw frames rather than converted tiff frames.  See the previous post (TIFF vs. RAW: Problem of Stacking RAW in DSS Solved!) for an explanation of why.

Crop

Wide Field

M92
Location: Happy Frog Observatory, Monroe, CT
Date: 06-17-18
Camera: Canon EOS Rebel T3i(a), AstroPhotography Tool APT
Telescope: Orion ED80 80mm f/7.5 Apochromatic Refractor Telescope
Barlow: None
Focal Length: 600mm
f/7.5
Focal Reducer: Orion 0.8x Focal Reducer for Refractor Telescopes
Mount: Orion Sirius EQ (HEQ5)
Filter: Astrodon UV/IR
Autoguiding: QHY-5L-II-M attached to an Agena 50mm Guide Scope with Helical Focuser
Exposure: 50 x 90s
ISO: 1600
Temp: 18 C
Post Processing: Deep Sky Stacker, Photoshop, Gradient Exterminator, Astronomy Tools, StarTools, Lightroom2
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