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    • By Kitsunegari
      Explore scientific firstlight 127mm x 1200mm achromat with basler aca1920-155um camera
      Identical processing,  Identical amount of frames.   +1 difference in gain setting on the triplet. 
       triplet set focuser position to about 17mm.       quadruplet set focuser position to about 32mm.    The focal point of the quadruplet barlow is nearly double,  which was not expected.
       
      I think i see finer surface detail on the triplet  in the white mottle's,  but  sharper overall image detail on the quadruplet.   This could be a moment of atmosphere affect of better seeing condition, or  simply a fumble  by my hand with focus on the triplet.
      2" Celestron Luminos 2.5x Quadruplet 
      FPS (avg.)=149
      Shutter=6.629ms
      Gain=13 (36%)
      Gamma=140
      1500 frames / -90%  /  stacked best 4%

       
       
       
       
      1.25" Celestron Ultima SV 2x Triplet 
      FPS (avg.)=149
      Shutter=6.629ms
      Gain=14 (38%)
      Gamma=140
      1500 frames / -90%  /  stacked best 4%
       

       
    • By MarsG76
      I didn't get a chance to spend too much time hunting the best seeing conditions for planetary imaging this year, but this is the best image of Saturn that I captured this season... Captured through a 8" SCT @ f30 (Televue 3X Barlow) using a Skyris 618C CCD.
    • By MarsG76
      I didn't get a chance to spend too much time hunting the best seeing conditions for planetary imaging this year, but this is the best image of Jupiter that I captured this season... Captured through a 8" SCT @ f30 (Televue 3X Barlow) using a Skyris 618C CCD.
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