Refractor Collimator images

Discussion in 'My Astrophotos' started by ROBERT T SCHAEFER JR, Jul 7, 2018.

  1. ROBERT T SCHAEFER JR

    ROBERT T SCHAEFER JR Cyanogen Customer

    Joined:
    May 13, 2018
    Messages:
    213
    Canon EOS Rebel T7i 'modified-Hutech' using a 20mm Pentax Eyepiece for eyepiece-projection into an APM Flattener thru a 152mm A+M
    Refractor(OfficinaStellare) hoping to correct the 'flarring' but it didn't on M16 .. which 'solved' at 2500mmF/F .
    I then switched to the normal PrimeFocus with the APM Flattener and Rebel T7i and tried an un-guided 1xSidereal 'one-shot' color
    image at about 3:30amEDT early this morning and the 'collimating' I did with the Refractor Collimator might have helped the stars to
    the edges.. but this image is with the APM Flattener with it's original housing for just 'crop-factor' camera images , M27 was used
    and 'solved' at 1175mm F/L with only a Moon 'focus' done to it before the image was taken .x
    FITS is 'HfSz' then Bin3 .
     
  2. Colin Haig

    Colin Haig Staff Member

    Joined:
    Oct 27, 2014
    Messages:
    3,490
    Robert,
    To get good results, you need to simplify everything, and eliminate the number of optical devices and mechanical connections.
    In my opinion, the M16 image is terrible. Sorry for saying that.
    Is this APM flattener designed for your refractor ?
    The eyepiece projection adds distortions of the eyepiece.
     

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