Celestial hemisphere:  Northern  ·  Constellation: Cygnus (Cyg)  ·  Contains:  34 Cyg)  ·  37 Cyg)  ·  NGC 6910  ·  Permanent nova (P Cyg  ·  The star 40 Cyg  ·  The star Revenant of the Swan  ·  The star Sadr (γ Cyg
Getting plate-solving status, please wait...
Sadr region of Cygnus in SHO - test image with new Borg107FL with F/3.9 focal reducer, David Elmore
Sadr region of Cygnus in SHO - test image with new Borg107FL with F/3.9 focal reducer
Powered byPixInsight

Sadr region of Cygnus in SHO - test image with new Borg107FL with F/3.9 focal reducer

Getting plate-solving status, please wait...
Sadr region of Cygnus in SHO - test image with new Borg107FL with F/3.9 focal reducer, David Elmore
Sadr region of Cygnus in SHO - test image with new Borg107FL with F/3.9 focal reducer
Powered byPixInsight

Sadr region of Cygnus in SHO - test image with new Borg107FL with F/3.9 focal reducer

Equipment

Loading...

Acquisition details

Loading...

Description

This was a test exposure with a newly acquired Borg107FL apochromat with 0.7 focal reducer making it F/3.9.  Adjustment of back focus is critical with this focal reducer equipped scope with a tolerance of 200 microns.  This image was taken within a couple of mm of optimum.  SHO processing was to examine how well all wavelengths come to sharp focus and are free from colored 'skirts' close to the star.

Comments

Revisions

  • Sadr region of Cygnus in SHO - test image with new Borg107FL with F/3.9 focal reducer, David Elmore
    Original
  • Final
    Sadr region of Cygnus in SHO - test image with new Borg107FL with F/3.9 focal reducer, David Elmore
    B

Sky plot

Sky plot

Histogram

Sadr region of Cygnus in SHO - test image with new Borg107FL with F/3.9 focal reducer, David Elmore