Celestial hemisphere:  Northern  ·  Constellation: Cepheus (Cep)  ·  Contains:  IC 1396
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IC1396 - 20191105 - TAMRON135mm F5.6 - UHC, altazastro
IC1396 - 20191105 - TAMRON135mm F5.6 - UHC
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IC1396 - 20191105 - TAMRON135mm F5.6 - UHC

Getting plate-solving status, please wait...
IC1396 - 20191105 - TAMRON135mm F5.6 - UHC, altazastro
IC1396 - 20191105 - TAMRON135mm F5.6 - UHC
Powered byPixInsight

IC1396 - 20191105 - TAMRON135mm F5.6 - UHC

Equipment

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Acquisition details

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Description

Another game of hide and seek with passing clouds.

A more serious issue was that the camera lens slightly lost focus during the session.

It is a shame because otherwise the final image could have been even better, but it may happen, mainly due to gravity, given the way the lens' focuser works.

In all probability it has always happened with this lens, but the difference in focusing went unnoticed when the lens was used at F2.8 since the stars already suffered of other aberrations (CA, spherical).

Comments

Revisions

  • IC1396 - 20191105 - TAMRON135mm F5.6 - UHC, altazastro
    Original
  • Final
    IC1396 - 20191105 - TAMRON135mm F5.6 - UHC, altazastro
    B

B

Description: Different light pollution treatment (with Astro Pixel Processor instead of StarTools): the center of the nebula is less evident, less distinguished, but on the other hand, more nebulosity is visible outside of it.

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Sky plot

Sky plot

Histogram

IC1396 - 20191105 - TAMRON135mm F5.6 - UHC, altazastro