ASTRO: GK Persei a Nova Remnant Fireworks Nebula

GK Persei is also known as Nova Persei 1901. While supernova can create
remnants so can nova. This nova remnant is located only 470 parsecs
away from us (1500 light-years). The remnant is large enough to be
easily seen though very faint. Changes are evident in it due to its
expansion in only a few years. I hope to revisit this one in a couple
years to see if I can resolve the expansion. As usual for most of last
year and now into 2013 the transparency has been awful. I didn't get as
much of it as I'd hoped. To do it justice I need an OIII filter as well
as H alpha but as yet that is still on my wish list. The star is still
unstable erupting every three years since about 1980 as a dwarf nova.
Very deep images show a jet coming out to the northeast. It takes much
more exposure time to pick it up than I gave it. I was surprised I
picked up quite a bit of IFN in the area. Since most images of it are
narrow band they miss this structure. It came as a surprise to me as I
was processing the image. It is seen in very deep images that show the
jet, I'd just not noticed it for some reason. Due to all the colors
seen in the remnant and the way it radiates out from the center it is
sometimes known as the Fireworks nebula for its resemblance to a star
burst fireworks shell --a really powerful one!

There wasn't enough in the image to prepare an annotated image. No
galaxy with a known redshift was listed in NED. The lone bright galaxy
in the image is 2MFGC 02926 to the lower left. The only magnitude NED
has for it is 13.6 and that is in the Infrared K band.

This is the first of only three objects weather allowed me to get in
February. I spent the time for two to get the H alpha data for this
one. Might not have if I'd known the month was going to be so bad.

14" LX200R @ f/10, Ha=4x30', L=4x10' RGB=4, STL-11000XM, Paramount ME

Rick

--
Prefix is correct. Domain is arvig dot net

Wow, that looks faint.
So it technically isn't a planetary nebula, but it still looks like one.

Stefan

"Rick Johnson" schrieb im Newsbeitrag
.com...

GK Persei is also known as Nova Persei 1901. While supernova can create
remnants so can nova. This nova remnant is located only 470 parsecs
away from us (1500 light-years). The remnant is large enough to be
easily seen though very faint. Changes are evident in it due to its
expansion in only a few years. I hope to revisit this one in a couple
years to see if I can resolve the expansion. As usual for most of last
year and now into 2013 the transparency has been awful. I didn't get as
much of it as I'd hoped. To do it justice I need an OIII filter as well
as H alpha but as yet that is still on my wish list. The star is still
unstable erupting every three years since about 1980 as a dwarf nova.
Very deep images show a jet coming out to the northeast. It takes much
more exposure time to pick it up than I gave it. I was surprised I
picked up quite a bit of IFN in the area. Since most images of it are
narrow band they miss this structure. It came as a surprise to me as I
was processing the image. It is seen in very deep images that show the
jet, I'd just not noticed it for some reason. Due to all the colors
seen in the remnant and the way it radiates out from the center it is
sometimes known as the Fireworks nebula for its resemblance to a star
burst fireworks shell --a really powerful one!

There wasn't enough in the image to prepare an annotated image. No
galaxy with a known redshift was listed in NED. The lone bright galaxy
in the image is 2MFGC 02926 to the lower left. The only magnitude NED
has for it is 13.6 and that is in the Infrared K band.

This is the first of only three objects weather allowed me to get in
February. I spent the time for two to get the H alpha data for this
one. Might not have if I'd known the month was going to be so bad.

14" LX200R @ f/10, Ha=4x30', L=4x10' RGB=4, STL-11000XM, Paramount ME

Rick

--
Prefix is correct. Domain is arvig dot net

It's not all that faint in red light due to the Halpha. My lousy
transparency the night I took the H alpha makes it seem fainter than it
really is.

Rick

On 9/29/2013 3:48 PM, Stefan Lilge wrote:
Wow, that looks faint.
So it technically isn't a planetary nebula, but it still looks like one.

Stefan

"Rick Johnson" schrieb im Newsbeitrag
.com...

GK Persei is also known as Nova Persei 1901. While supernova can create
remnants so can nova. This nova remnant is located only 470 parsecs
away from us (1500 light-years). The remnant is large enough to be
easily seen though very faint. Changes are evident in it due to its
expansion in only a few years. I hope to revisit this one in a couple
years to see if I can resolve the expansion. As usual for most of last
year and now into 2013 the transparency has been awful. I didn't get as
much of it as I'd hoped. To do it justice I need an OIII filter as well
as H alpha but as yet that is still on my wish list. The star is still
unstable erupting every three years since about 1980 as a dwarf nova.
Very deep images show a jet coming out to the northeast. It takes much
more exposure time to pick it up than I gave it. I was surprised I
picked up quite a bit of IFN in the area. Since most images of it are
narrow band they miss this structure. It came as a surprise to me as I
was processing the image. It is seen in very deep images that show the
jet, I'd just not noticed it for some reason. Due to all the colors
seen in the remnant and the way it radiates out from the center it is
sometimes known as the Fireworks nebula for its resemblance to a star
burst fireworks shell --a really powerful one!

There wasn't enough in the image to prepare an annotated image. No
galaxy with a known redshift was listed in NED. The lone bright galaxy
in the image is 2MFGC 02926 to the lower left. The only magnitude NED
has for it is 13.6 and that is in the Infrared K band.

This is the first of only three objects weather allowed me to get in
February. I spent the time for two to get the H alpha data for this
one. Might not have if I'd known the month was going to be so bad.

14" LX200R @ f/10, Ha=4x30', L=4x10' RGB=4, STL-11000XM, Paramount ME

Rick



--
Prefix is correct. Domain is arvig dot net