Contains:NGC 7625, Veil nebula, Lace-work nebula, Filamentary nebula, NGC 6960, The star 52Cyg
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Western Veil Nebula, 




    

        Chris Sullivan
Western Veil Nebula

Western Veil Nebula

Technical card

Resolution: 4485x2628

Dates: June 25, 2017

Frames: 58x220"

Integration: 3.5 hours

Avg. Moon age: 1.61 days

Avg. Moon phase: 2.89%

Astrometry.net job: 1627775

RA center: 311.527 degrees

DEC center: 30.726 degrees

Pixel scale: 1.066 arcsec/pixel

Orientation: 84.100 degrees

Field radius: 0.770 degrees

Data source: Backyard

Description

First true light with the ED80. I definitely need a field flattener, even with a small sensor.

EDIT: The scope was delivered defective with a loose objective - depending on luck and how it was slewing, sometimes the distortion was tolerable, and other times it was extreme. The scope was replaced in December of 2017.

Comments

Author

Chris-PA
Chris Sullivan
License: None (All rights reserved)
3810
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Revisions

  • Western Veil Nebula, 




    

        Chris Sullivan
    Original
  • Western Veil Nebula, 




    

        Chris Sullivan
    B
  • Western Veil Nebula, 




    

        Chris Sullivan
    C
  • Western Veil Nebula, 




    

        Chris Sullivan
    D
  • Final
    Western Veil Nebula, 




    

        Chris Sullivan
    E

D

I tried fixing the distortion at the edges using Free Transform > Warp. I'm curious to see if this will plate solve now. At any rate, it looks like my focuser was still not square with the scope. I just tried fixing it with a laser and mirror, so hopefully I can use this scope without a field flattener (at least with the smaller chip of the 183C if not also the micro 4/3 sized sensor of the ZWO ASI 1600).

E

Fixed the weird aspect ratio and made some changes to selective color. It's still a flawed image due to a loose objective (wasn't diagnosed until November of 2017), but I'd like to try again.

Sky plot

Sky plot

Histogram

Western Veil Nebula, 




    

        Chris Sullivan