Leo I Dwarf Local Group Galaxy just north of Regulus
with 10" f/3.9 Astrograph @ f/2.9
Uploaded 4/18/24

 

            
Another sharp image
            with the Nexus coma corrector, this shot includes the brilliant
            blue star Regulus in the center and due north the dwarf galaxy
            Leo I. There was some haze on a few nights so Regulus has a foggy
            look to it, but I left it in because of the asthetic effect.
            The brightest stars in Leo I are 18.5 magnitude, and Ive here
            it is resolved to the core. Faintest galaxies in this shot are
            about magnitude 22.3.

            


            Data: GSO 10" @ f/2.8 Newtonian, LRGB=2h, Atik16200 CCD,
            Payson Az.

            
Select an image size for a larger view:

1400 x 1290


Instrument:  10" f/3.9 Orion Astrograph Newtonian with Nexus 0.75x CC
Mount:  Astrophysics 1200 QMD
CCD Camera:  ATIK 16200 
Guider: ASI290  w/80mm WO Zenithstar 81 piggyback refractor
Exposure:  120m LRGB
Astronomik  RGB Combine Ratio:  1: .9: 1.6 = G2V  calibrated
Location:  Payson, Arizona, Elevation:  5150 ft.
Sky:  Seeing FWHM = 3 arcsec , Transparency 9/10
Outside Temperature:  35 F
CCD Temperature:  -30 C
Image Processing Tools: 
Maxim DL6:  Calibration, PixInsight:  All Remaining processing, Production finishing: Photoshop CS2

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