ASTRO: NGC 4490/4485

I had some nights with good seeing this spring, in one of those (FWHM in the
5 minute raw frames was about 2.2 arcseconds in the earlier frames and 2.9
arcseconds in the later frames) I got the luminance data for this image of
interacting galaxies NGC 4490 and NGC 4485. Colour was added a month later
with my QHY8 one-shot-colour.

Taken from the middle of Berlin with a Meade 10" ACF at f/7.8 on a G11
mount, luminance with SXV-H9 camera, 40x5 minutes, colour with QHY8, 27x5
minutes.

The image can also be found at
http://ccd-astronomy.de/temp2/4490-4485colourgut.jpg

Stefan

Stefan Lilge wrote:
I had some nights with good seeing this spring, in one of those (FWHM in the
5 minute raw frames was about 2.2 arcseconds in the earlier frames and 2.9
arcseconds in the later frames) I got the luminance data for this image of
interacting galaxies NGC 4490 and NGC 4485. Colour was added a month later
with my QHY8 one-shot-colour.

Taken from the middle of Berlin with a Meade 10" ACF at f/7.8 on a G11
mount, luminance with SXV-H9 camera, 40x5 minutes, colour with QHY8, 27x5
minutes.

The image can also be found at
http://ccd-astronomy.de/temp2/4490-4485colourgut.jpg

Stefan

The HII regions came out very well. I've tried this pair twice -- last
time was last year when it had a bright SN. Neither had good seeing.
This year I've been getting better seeing on a few nights but so many
clouds I've gotten very little in the last three months. I've gotten a
lot of 10 minutes of this and 20 of that then they are too far west and
I'm out of luck. It's driving me nuts. Think I have about 15 such part
images that will now have to wait for next year.

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".

that's a fine image of one of my favorites Stefan!

that came our really nice


"Stefan Lilge" wrote in message
...
I had some nights with good seeing this spring, in one of those (FWHM in
the 5 minute raw frames was about 2.2 arcseconds in the earlier frames and
2.9 arcseconds in the later frames) I got the luminance data for this image
of interacting galaxies NGC 4490 and NGC 4485. Colour was added a month
later with my QHY8 one-shot-colour.

Taken from the middle of Berlin with a Meade 10" ACF at f/7.8 on a G11
mount, luminance with SXV-H9 camera, 40x5 minutes, colour with QHY8, 27x5
minutes.

The image can also be found at
http://ccd-astronomy.de/temp2/4490-4485colourgut.jpg

Stefan