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Contains:  Ring nebula in Lyra, M 57, NGC 6720, IC 1296
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M57 with its outer halo and IC 1296, 


M57 with its outer halo and IC 1296

M57 with its outer halo and IC 1296

Technical card

Resolution: 2749x2199 job: 1624833

RA center: 283.396 degrees

DEC center: 33.027 degrees

Pixel scale: 0.914 arcsec/pixel

Orientation: 90.372 degrees

Field radius: 0.447 degrees


This is my first attempt to capture the faint outer halo of the ring nebula M57 and a background spiral galaxy IC 1296. Meade SN-10 + Atik460ex. I have had a collimation problem with this scope so StarTools was used to repair the star shape. The FOV is not quite right for this combination. The capture data are:
Ha(5nm): 10 min x 38
Oiii(5nm): 10 min x 19
Sii(5nm): 10 min x 18

All with Astrodon 5nm filters.

HST25%+Natural Color75%

The outer halo (mostly Ha) is very faint and nearly spherical. In contrast, the inner halo has a irregular shape. For some reasons, in this image, the inner halo shows lots of Oiii (i.e. blue-green in color). In other people's images, the inner halo seem to show in red (Ha).



License: None (All rights reserved)

Sky plot

Sky plot


M57 with its outer halo and IC 1296,