Celestial hemisphere:  Northern  ·  Constellation: Cepheus (Cep)  ·  Contains:  NGC 7023
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Iris Nebula NGC7023, Anthony Quintile
Iris Nebula NGC7023
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Iris Nebula NGC7023

Getting plate-solving status, please wait...
Iris Nebula NGC7023, Anthony Quintile
Iris Nebula NGC7023
Powered byPixInsight

Iris Nebula NGC7023

Equipment

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Description

This is the culmination of months of learning how to set up and use my Celestron 8" SCT and Losmandy G11 with an OAG.

Some lessons learned:

Longer FL AP is tough.

SCTs have mirror shift, must use an OAG to guide long exposures.

SCTs need a bunch of collimation and alignment to get round stars.

The Celestron FR/FF does not fix coma on the stars in the corners, the Starizona CC/FR does.

The Losmandy really benefits from lots of proper set up including adding a belleville washer to the RA worm and adding PEC.

Seeing is at least half the AP battle.

Dither or die, especially with a stock DSLR, especially if the ambient temps are not cold.

Dark skies are almost cheating.

Comments

Revisions

  • Iris Nebula NGC7023, Anthony Quintile
    Original
  • Iris Nebula NGC7023, Anthony Quintile
    C
  • Final
    Iris Nebula NGC7023, Anthony Quintile
    D

Sky plot

Sky plot

Histogram

Iris Nebula NGC7023, Anthony Quintile