Celestial hemisphere:  Northern  ·  Constellation: Ursa Major (UMa)  ·  Contains:  Bode's Galaxy  ·  Cigar Galaxy  ·  M 81  ·  M 82  ·  NGC 3031  ·  NGC 3034  ·  NGC 5519
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M81-82, PJ Mahany
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M81-82

Getting plate-solving status, please wait...
M81-82, PJ Mahany
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M81-82

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Description

Broke out the homebuilt 6" Newt as test of the QHY 168c halo effect and the protective cover on sensor . Equivalent quanta exposure to 13" RASA. I think this shows an inverse dependency between F number and halo effect around brighter stars for the QHY 168c camera. So I think this shows that the QHY 168c is not a suitable camera for really fast system. Works fine for an F 5.85 system.

Comments

Revisions

  • M81-82, PJ Mahany
    Original
  • M81-82, PJ Mahany
    B
  • Final
    M81-82, PJ Mahany
    C

C

Description: These galaxies are always an education in processing every time Try to get better...

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M81-82, PJ Mahany