Celestial hemisphere:  Northern  ·  Constellation: Taurus (Tau)  ·  Contains:  16 Tau  ·  17 Tau  ·  19 q Tau  ·  20 Tau  ·  21 Tau  ·  22 Tau  ·  23 Tau  ·  24 Tau  ·  25 eta Tau  ·  27 Tau  ·  Alcyone  ·  Asterope  ·  Atlas  ·  Barnard's Merope Nebula  ·  Celaeno  ·  Electra  ·  IC 349  ·  M 45  ·  Maia  ·  Maia Nebula  ·  Merope  ·  Merope Nebula  ·  NGC 1432  ·  NGC 1435  ·  Sterope II  ·  Taygeta  ·  The star Atlas (27Tau)  ·  The star Celaeno (16Tau)  ·  The star Electra (17Tau)  ·  The star Merope (23Tau)  ·  And 3 more.
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Flawed image of Pleiades, stricnine
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Flawed image of Pleiades

Getting plate-solving status, please wait...
Flawed image of Pleiades, stricnine
Powered byPixInsight

Flawed image of Pleiades

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Description

Plenty of technical issues/challenges in this one.

The bright stars have dark streaks in the "glare" around them . I suspect they're either caused by something intercepting the light in the telescope, or by the corrector plate's glass, or mirror. I've checked the light path countless times and can't see anything obvious intercepting light. Given that many of the dark streaks appear to be about 90 deg apart seems to absolve the corrector plate's 6 retaining screws being too tight. The 4 corrector plate alignment screws are contacting the glass edge with light pressure to prevent them from backing out (no change is visible with them loose either).

Then there's the color fringing due to atmospheric refraction (and/or telescope optics). Hardly a great image due to those technical challengers.

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  • Flawed image of Pleiades, stricnine
    Original
  • Final
    Flawed image of Pleiades, stricnine
    B

B

Description: A little brighter version.

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Flawed image of Pleiades, stricnine