Hemisphere:  Northern  ·  Constellation: Lyra (Lyr)  ·  Contains:  IC 1296  ·  M 57  ·  NGC 6720  ·  Ring nebula in Lyra
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M57 with its outer halo and IC 1296, 



    
        

            snakagawa
M57 with its outer halo and IC 1296
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M57 with its outer halo and IC 1296

Getting plate-solving status, please wait...
M57 with its outer halo and IC 1296, 



    
        

            snakagawa
M57 with its outer halo and IC 1296
Powered byPixInsight

M57 with its outer halo and IC 1296

Technical card


Basic astrometry details

Astrometry.net job: 1624833

RA center: 18h 53' 35"

DEC center: +33° 1' 37"

Pixel scale: 0.914 arcsec/pixel

Orientation: 89.628 degrees

Field radius: 0.447 degrees


Resolution: 2749x2199

Description

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).

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M57 with its outer halo and IC 1296, 



    
        

            snakagawa