ASTRO: Sh2-112 in halpha under good seeing (~2.3")

Usually the hot weather we have been having in northern Calif brings steady
seeing if you can get transparency

This year is no different but the fires have wiped out the transparency

Today we got a weather change bringing the Pacific flow onshore and with
that some clearing skies and nice seeing.

I say "clearing" skies: we have a long way to go... The moon looks orange
for example.

But tonight I tried the 18" cass again with the Proline 9K. This time I ran
unbinned.

I was measuring 2.1" to 2.4" on the best subs and that is at 20 minutes
exposure at 5760mm focal length (image scale of 0.43"/pixel)

this is 200 minutes total using a Baader halpha filter

http://www.narrowbandimaging.com/sh2...er_ha_page.htm

Very Nice! Amazing detail!

Richard Crisp wrote:


I was measuring 2.1" to 2.4" on the best subs and that is at 20 minutes
exposure at 5760mm focal length (image scale of 0.43"/pixel)

this is 200 minutes total using a Baader halpha filter

http://www.narrowbandimaging.com/sh2...er_ha_page.htm





--
John N. Gretchen III
N5JNG NCS304
http://www.tisd.net/~jng3

Thanks for the coments John. Here's a link to the full rez version

note the clean split on some tight doubles:

http://www.narrowbandimaging.com/ima...a_10x20min.jpg

look at this earlier image under lesser conditions for comparison

http://www.narrowbandimaging.com/ima...a_10x20min.jpg

or these other two: ditto on the tight splits

http://www.narrowbandimaging.com/ima...ha_6x30min.jpg

http://www.narrowbandimaging.com/ima...ha_6x20min.jpg


"John N. Gretchen III" wrote in message
m...
Very Nice! Amazing detail!

Richard Crisp wrote:


I was measuring 2.1" to 2.4" on the best subs and that is at 20 minutes
exposure at 5760mm focal length (image scale of 0.43"/pixel)

this is 200 minutes total using a Baader halpha filter

http://www.narrowbandimaging.com/sh2...er_ha_page.htm





--
John N. Gretchen III
N5JNG NCS304
http://www.tisd.net/~jng3

Great picture Richard. Stars look good even in the largest version on your
website, which probably means that it will be difficult to find a more
detailed amateur picture...

Stefan

"Richard Crisp" schrieb im Newsbeitrag
...
Usually the hot weather we have been having in northern Calif brings
steady seeing if you can get transparency

This year is no different but the fires have wiped out the transparency

Today we got a weather change bringing the Pacific flow onshore and with
that some clearing skies and nice seeing.

I say "clearing" skies: we have a long way to go... The moon looks orange
for example.

But tonight I tried the 18" cass again with the Proline 9K. This time I
ran unbinned.

I was measuring 2.1" to 2.4" on the best subs and that is at 20 minutes
exposure at 5760mm focal length (image scale of 0.43"/pixel)

this is 200 minutes total using a Baader halpha filter

http://www.narrowbandimaging.com/sh2...er_ha_page.htm

thanks Stefan

there's an even higher resolution version I did not link:

http://www.narrowbandimaging.com/ima...a_10x20min.jpg

I took more data last night but haven't yet processed it.

Maybe I got another 3-6 good subframes


"Stefan Lilge" wrote in message
...
Great picture Richard. Stars look good even in the largest version on your
website, which probably means that it will be difficult to find a more
detailed amateur picture...

Stefan

"Richard Crisp" schrieb im Newsbeitrag
...
Usually the hot weather we have been having in northern Calif brings
steady seeing if you can get transparency

This year is no different but the fires have wiped out the transparency

Today we got a weather change bringing the Pacific flow onshore and with
that some clearing skies and nice seeing.

I say "clearing" skies: we have a long way to go... The moon looks orange
for example.

But tonight I tried the 18" cass again with the Proline 9K. This time I
ran unbinned.

I was measuring 2.1" to 2.4" on the best subs and that is at 20 minutes
exposure at 5760mm focal length (image scale of 0.43"/pixel)

this is 200 minutes total using a Baader halpha filter

http://www.narrowbandimaging.com/sh2...er_ha_page.htm

this looks like a brain or cauliflower!

Richard Crisp wrote:
thanks Stefan

there's an even higher resolution version I did not link:

http://www.narrowbandimaging.com/ima...a_10x20min.jpg


John N. Gretchen III
N5JNG NCS304
http://www.tisd.net/~jng3

how about a "cabbagehead" jellyfish John?


"John N. Gretchen III" wrote in message
m...
this looks like a brain or cauliflower!

Richard Crisp wrote:
thanks Stefan

there's an even higher resolution version I did not link:

http://www.narrowbandimaging.com/ima...a_10x20min.jpg


John N. Gretchen III
N5JNG NCS304
http://www.tisd.net/~jng3

there you go! That's it!

Richard Crisp wrote:
how about a "cabbagehead" jellyfish John?


"John N. Gretchen III" wrote in message
m...
this looks like a brain or cauliflower!

Richard Crisp wrote:
thanks Stefan

there's an even higher resolution version I did not link:

http://www.narrowbandimaging.com/ima...a_10x20min.jpg

John N. Gretchen III
N5JNG NCS304
http://www.tisd.net/~jng3



--
John N. Gretchen III
N5JNG NCS304
http://www.tisd.net/~jng3