Hemisphere:  Northern  ·  Constellation: Lyra (Lyr)  ·  Contains:  IC 1296  ·  M 57  ·  NGC 6720  ·  PK063+13.1  ·  Ring Nebula
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M 57 Ring Nebula (1mm T-2 distance ring test), 



    
        

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M 57 Ring Nebula (1mm T-2 distance ring test)

Getting plate-solving status, please wait...
M 57 Ring Nebula (1mm T-2 distance ring test), 



    
        

            star-watcher.ch
Powered byPixInsight

M 57 Ring Nebula (1mm T-2 distance ring test)

Equipment

Imaging Telescopes Or Lenses
Sky Watcher Explorer 130PDS
Imaging Cameras
Canon EOS 70Da
Mounts
iOptron GEM28
Filters
Astronomik UV-IR Block L-3 Clip Filter
Accessories
Lacerta LED Flatfield-Box 185mm · Baader MPCC Mark 3
Software
Pleiades Astrophoto PixInsight · Adobe Lightroom 6 (Adobe Lightroom)
Guiding Telescopes Or Lenses
TS-Optics Deluxe 50 mm Guiding/Finder scope with micro focusing
Guiding Cameras
Lacerta MGEN 2

Acquisition details

Dates:
May 9, 2022
Frames:
Astronomik UV-IR Block L-3 Clip Filter: 140x60" (2h 20') ISO1600 f/5
Integration:
2h 20'
Darks:
32
Flats:
57
Bias:
37
Avg. Moon age:
7.84 days
Avg. Moon phase:
54.82%
Bortle Dark-Sky Scale:
5.00
Temperature:
13.00

RA center: 18h53m34s.953

DEC center: +33°0141.38

Pixel scale: 0.648 arcsec/pixel

Orientation: -0.902 degrees

Field radius: 0.425 degrees

WCS transformation: thin plate spline

More info:Open 

Resolution: 3926x2622

Locations: Derendingen 454m, Solothurn, SO, Switzerland

Data source: Backyard

Description

This time I used the 1mm distance ring to fine adjust the distance between sensor and corrector.

1mm seems to be too much distance between DSLR sensor and coma corrector... the borders are worser than with the 0.5mm ring.

And still not enough focal length for M 57 Ring Nebula, one of my favorite objects... but far better than with 400mm :-)

Drizzled 2x

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