ASTRO: MWP1 and Alv1

We had an extremely hot summer in Germany, temperatures of 35 degrees
celsius were the norm not the exception. Some say that Brandenburg (the
country surrounding Berlin) will become a desert sooner or later. Would be
OK with me if that means that we will get a lot of clear nights ;-)
Unfortunately most summer nights have only been semi-clear, some thin clouds
were always moving through. Fortunately that heatwave seems to be over now.

Motch-Werner-Pakull1 in Cygnus is a very old planetary nebula also called
the "Methusalem nebula".
I imaged it in five short summer nights in August with my RASA astrograph.
I really like the RASA, it brings with it a lot of disadvantages, but
imaging at f/2.2 opens up a new world for me.

When I inspected the processed image I noticed a ring structure to the lower
right of MWP1 that hat a blue star at it's center. The ring looks like an
overcorrected dust donut. At first I thought that this could be "Lilge2",
but some research showed that it was "Alves1" instead.

Taken from Berlin with a Celestron RASA on a G11 mount, Trius SX694 camera,
Baader "highspeed" Ha and OIII filters, 74x3min Ha, 186x3min OIII.

Stefan