Hemisphere:  Northern  ·  Constellation: Leo (Leo)  ·  Contains:  Leo Triplet  ·  M 65  ·  M65  ·  NGC 3623

Image of the day 04/19/2021

Getting plate-solving status, please wait...
    M65, 



    
        

            Michael Feigenbaum
    Powered byPixInsight

    M65

    Image of the day 04/19/2021

    Getting plate-solving status, please wait...
      M65, 



    
        

            Michael Feigenbaum
      Powered byPixInsight

      M65

      Imaging telescopes or lenses: Celestron 9.25" EdgeHD

      Imaging cameras: ZWO ASI294MM-Pro

      Mounts: Orion HDX110 EQ-G

      Guiding telescopes or lenses: Celestron OAG

      Guiding cameras: ZWO ASI174 Mini

      Focal reducers: Celestron 0.7x Focal Reducer

      Software: PixInsight  ·  N.I.N.A.  ·  Stark Labs PHD 2.6  ·  DSS

      Filters: Optolong Green 1.25"  ·  Optolong Red 1.25"  ·  Optolong Blue 1.25"  ·  Optolong Lum 1.25"


      Dates:April 5, 2021April 9, 2021April 10, 2021

      Frames:
      Optolong 7nm Ha: 101x180" (gain: 120.00) -10C bin 2x2
      Optolong Blue 1.25": 86x60" (gain: 120.00) -10C bin 2x2
      Optolong Green 1.25": 89x60" (gain: 120.00) -10C bin 2x2
      Optolong Lum 1.25": 287x60" (gain: 120.00) -10C bin 2x2
      Optolong Red 1.25": 87x60" (gain: 120.00) bin 2x2

      Integration: 14.2 hours

      Darks: ~46

      Flats: ~40

      Flat darks: ~40

      Avg. Moon age: 26.15 days

      Avg. Moon phase: 15.73%


      Astrometry.net job: 4398674

      RA center: 11h 18' 55"

      DEC center: +13° 5' 34"

      Pixel scale: 0.580 arcsec/pixel

      Orientation: -90.217 degrees

      Field radius: 0.234 degrees


      Resolution: 2372x1671

      Data source: Backyard

      Description

      Here we have my attempt at M65, one of the Leo Triplet. These seem to be so often imaged as a group and I thought it was a good idea to try to image these separately this galaxy season. This intermediate spiral of 90,000 ly in diameter lies about 35 million ly away in Leo. It is espimated that it contain about 200 billion stars.

      This was an interesting image to make and I'm fairly pleased with it. M65 is not a very colorful galaxy and I looked at a lot of professional images to sort of calibrate my eye for saturation and the like. I shot a good amount of Ha thinking that I might be able to bring out a H3 region in the galaxy but to no avail. I did however, use the Ha data in processing my L channel and that seemed to have a good affect on the final L. When I tried to incorporate the Ha, all I got was a pinkish tone throughout the image which leads me to believe that perhaps this Ha filter is just not narrow enough.

      In any case, this was a very nice project to do, the OAG is giving me superb guiding resulting eccentricity values around 0.4 or a little less and noticeably tighter stars. Fewer throw-aways too...

      I hope you like it and as always, comments and criticism encouraged.

      CS and good health!

      Comments

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      • Final
        M65, 



    
        

            Michael Feigenbaum
        Original
        M65, 



    
        

            Michael Feigenbaum
        K

      K

      Description: Wider view with North up...

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      M65, 



    
        

            Michael Feigenbaum

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