ASTRO: M27 in H-alpha

With the first clear night in ages I had to take something even if it
was only a couple days from full moon. So I put in the H-alpha filter
and went after M27. Unfortunately, I had been working on the set-up and
didn't get a set screw fully tight. That resulted in the camera being
at a slight angle to the image plane. The east and west side of the
image was way out of focus but the center, where M27 was was nice and
sharp. So I cropped out the fuzzy stuff. I tried making a color
version using RGB data from last fall but didn't like the result. I
will try again. In the meantime I'm posting the black and white
version. Even with the filter I had some fogging that cost me much of
the outer envelope I'd hoped to pick up. My background was about 20%
higher than normal so some moonlight was getting to me. Of course the
moon wasn't all that far from M27 at the time. If you really look hard
you can find the very blue central star but it is really faint.

14" LX200R @ f/10, 3x30 minutes in H-alpha, STL-11000XM, Paramount ME

Rick
--
Correct domain name is arvig and it is net not com. Prefix is correct.
Third character is a zero rather than a capital "Oh".

Great picture Rick, both detailed and deep.

Stefan

"Rick Johnson" schrieb im Newsbeitrag
...
With the first clear night in ages I had to take something even if it
was only a couple days from full moon. So I put in the H-alpha filter
and went after M27. Unfortunately, I had been working on the set-up and
didn't get a set screw fully tight. That resulted in the camera being
at a slight angle to the image plane. The east and west side of the
image was way out of focus but the center, where M27 was was nice and
sharp. So I cropped out the fuzzy stuff. I tried making a color
version using RGB data from last fall but didn't like the result. I
will try again. In the meantime I'm posting the black and white
version. Even with the filter I had some fogging that cost me much of
the outer envelope I'd hoped to pick up. My background was about 20%
higher than normal so some moonlight was getting to me. Of course the
moon wasn't all that far from M27 at the time. If you really look hard
you can find the very blue central star but it is really faint.

14" LX200R @ f/10, 3x30 minutes in H-alpha, STL-11000XM, Paramount ME

Rick
--
Correct domain name is arvig and it is net not com. Prefix is correct.
Third character is a zero rather than a capital "Oh".

Rick, this is fantastic, one of the best M27 pics I've seen. There's
so much detail I don't miss the colors!

KApella

"Rick Johnson" wrote in message
...
With the first clear night in ages I had to take something even if it
was only a couple days from full moon. So I put in the H-alpha filter
and went after M27. Unfortunately, I had been working on the set-up and
didn't get a set screw fully tight. That resulted in the camera being
at a slight angle to the image plane. The east and west side of the
image was way out of focus but the center, where M27 was was nice and
sharp. So I cropped out the fuzzy stuff. I tried making a color
version using RGB data from last fall but didn't like the result. I
will try again. In the meantime I'm posting the black and white
version. Even with the filter I had some fogging that cost me much of
the outer envelope I'd hoped to pick up. My background was about 20%
higher than normal so some moonlight was getting to me. Of course the
moon wasn't all that far from M27 at the time. If you really look hard
you can find the very blue central star but it is really faint.

14" LX200R @ f/10, 3x30 minutes in H-alpha, STL-11000XM, Paramount ME

Rick
--
Correct domain name is arvig and it is net not com. Prefix is correct.
Third character is a zero rather than a capital "Oh".

Well, Rick, despite the troubles, it's still quite a nice image.
Congratulations. Glad to see you had some cooperative weather for a
change.

George

wow!

Rick Johnson wrote:

With the first clear night in ages I had to take something even if it
was only a couple days from full moon. So I put in the H-alpha filter
and went after M27. Unfortunately, I had been working on the set-up and
didn't get a set screw fully tight. That resulted in the camera being
at a slight angle to the image plane. The east and west side of the
image was way out of focus but the center, where M27 was was nice and
sharp. So I cropped out the fuzzy stuff. I tried making a color
version using RGB data from last fall but didn't like the result. I
will try again. In the meantime I'm posting the black and white
version. Even with the filter I had some fogging that cost me much of
the outer envelope I'd hoped to pick up. My background was about 20%
higher than normal so some moonlight was getting to me. Of course the
moon wasn't all that far from M27 at the time. If you really look hard
you can find the very blue central star but it is really faint.

14" LX200R @ f/10, 3x30 minutes in H-alpha, STL-11000XM, Paramount ME

Rick
--
Correct domain name is arvig and it is net not com. Prefix is correct.
Third character is a zero rather than a capital "Oh".

------------------------------------------------------------------------
[Image]

H-a sure can make things look different... nice amount of signal in the long
sub-exposures.

--
Regards, Doug W.

Doug W. wrote:
H-a sure can make things look different... nice amount of signal in the long
sub-exposures.

Haven't seen anything new from you in a while. You must be having even
worse weather than I have had. I now have my tribander up but no
dipoles yet. I'm sort of back on the air again after a 2 year gap for
the move.

Rick

--
Correct domain name is arvig and it is net not com. Prefix is correct.
Third character is a zero rather than a capital "Oh".

I Rick... I was out last night for the first time this summer... did not get
much as conditions were poor but I hope that the high humidity and cloud
cover will exit my area as Aug. rolls along.

Get a wire up for 75m and check into the freewheelers net on 3.916 at 1030
hrs central time... I'm there most nights.. or 20m psk

W0KIT

--
Regards, Doug W.
www.photonsfate.com
"Rick Johnson" wrote in message
news


Doug W. wrote:
H-a sure can make things look different... nice amount of signal in the
long sub-exposures.

Haven't seen anything new from you in a while. You must be having even
worse weather than I have had. I now have my tribander up but no dipoles
yet. I'm sort of back on the air again after a 2 year gap for the move.

Rick

--
Correct domain name is arvig and it is net not com. Prefix is correct.
Third character is a zero rather than a capital "Oh".

"Doug W." wrote in message
news
I Rick... I was out last night for the first time this summer... did not
get much as conditions were poor but I hope that the high humidity and
cloud cover will exit my area as Aug. rolls along.

Get a wire up for 75m and check into the freewheelers net on 3.916 at 1030
hrs central time... I'm there most nights.. or 20m psk

W0KIT


I recently picked up an NRD525 again. It is the third one I have owned.

Still not too interested in transmitting, but I do enjoy HF Utility
listening

formerly KD6BT



--
Regards, Doug W.
www.photonsfate.com
"Rick Johnson" wrote in message
news


Doug W. wrote:
H-a sure can make things look different... nice amount of signal in the
long sub-exposures.

Haven't seen anything new from you in a while. You must be having even
worse weather than I have had. I now have my tribander up but no dipoles
yet. I'm sort of back on the air again after a 2 year gap for the move.

Rick

--
Correct domain name is arvig and it is net not com. Prefix is correct.
Third character is a zero rather than a capital "Oh".