M 3

 Distance from Earth:   About 34,000 light years

 Located in:   Canes Venatici

Telescope: 12.5" RCOS

Camera : STL11000  -- off axis guiding

Mount :           AP1200

Image date:  May 2023

 

  -- Filters used and total time--

Luminous   30 minutes  (2x2 binning)

Red              30 minutes  (2x2 binning)

Green          30 minutes  (2x2 binning)

Blue             30 minutes  (2x2 binning)  

Ha              

OIII            

SII