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

Imaging Telescopes Or Lenses
Celestron Nexstar 8SE
Imaging Cameras
Pentax K3 II
Mounts
Losmandy G11 Gemini 2
Accessories
Celestron OAG #93648 · Starizona SCT Corrector II - 0.63X
Software
Phd2 · Photoshop CC 2019 · DeepSkyStacker (DSS) deepskystacker
Guiding Telescopes Or Lenses
Celestron Nexstar 8SE
Guiding Cameras
ZWO ASI120MM Mini

Acquisition details

Frames:
116x240" (7h 44')
Integration:
7h 44'

Basic astrometry details

Astrometry.net job: 3046107

RA center: 21h01m32s.2

DEC center: +68°1004

Pixel scale: 0.554 arcsec/pixel

Orientation: 89.404 degrees

Field radius: 0.538 degrees

Resolution: 5807x3898

Locations: Doney Mountain Picnic Area, Wupatki National Monument, Flagstaff, AZ, United States

Data source: Traveller

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