NGC 6946Posted By Roland Christen |
Great detail and nice star colors.
Rolando
Rolando
Posts Made By: Roland Christen
June 30, 2011 03:40 AM
Forum:
CCD Imaging and Processing/Deep Sky
July 1, 2011 07:18 PM
Forum:
CCD Imaging and Processing/Deep Sky
Sharpless - SH2-112 in colorPosted By Roland Christen |
Swapped red and green channels.
Rolando
Rolando
July 5, 2011 03:43 PM
Forum:
CCD Imaging and Processing/Deep Sky
Sh2-119Posted By Roland Christen |
That looks like an interesting object. Might have to try it in my next imaging session.
Nice work.
Rolando
Nice work.
Rolando
July 21, 2011 04:30 PM
Forum:
Bad to the Bone Autos
Question for Car EnthusiastsPosted By Roland Christen |
Acellerate, then take your foot off the gas. That is when you will see if the engine is burning oil - look in the rearview to see if there is any faint smoke.
Rolando
Rolando
August 18, 2011 07:10 PM
Forum:
CCD Imaging and Processing/Deep Sky
Kronberger 61Posted By Roland Christen |
This is a crop of the nebula itself, upscaled to 2x the original full size and processed in PS3. You can begin to see the structure and the "soccer ball" appearance.
There is a mag 10 star to the left of the planetary which has a small faint spiral galaxy just below it. Somewhat below and slightly to the left of the nebula is a very faint edge-on galaxy. Both of these showed up better in red light in a 20 minute exposure.
This may be the first amateur image of this very faint object.
Rolando
There is a mag 10 star to the left of the planetary which has a small faint spiral galaxy just below it. Somewhat below and slightly to the left of the nebula is a very faint edge-on galaxy. Both of these showed up better in red light in a 20 minute exposure.
This may be the first amateur image of this very faint object.
Rolando
August 18, 2011 07:13 PM
Forum:
Astro-Physics
Krohnberger61Posted By Roland Christen |
This is a crop of the nebula itself, upscaled to 2x the original full size and processed in PS3. You can begin to see the structure and the "soccer ball" appearance.
There is a mag 10 star to the left of the planetary which has a small faint spiral galaxy just below it. Somewhat below and slightly to the left of the nebula is a very faint edge-on galaxy. Both of these showed up better in red light in a 20 minute exposure.
This may be the first amateur image of this very faint object.
Rolando
There is a mag 10 star to the left of the planetary which has a small faint spiral galaxy just below it. Somewhat below and slightly to the left of the nebula is a very faint edge-on galaxy. Both of these showed up better in red light in a 20 minute exposure.
This may be the first amateur image of this very faint object.
Rolando
August 19, 2011 11:17 PM
Forum:
CCD Imaging and Processing/Deep Sky
Kronberger 61Posted By Roland Christen |
Thanks all, for your comments.
Keep shooting!
Rolando
Keep shooting!
Rolando
August 19, 2011 11:18 PM
Forum:
Astro-Physics
Krohnberger61Posted By Roland Christen |
Thanks all for your comments.
Keep shooting!
Rolando
Keep shooting!
Rolando
August 23, 2011 07:06 AM
Forum:
CCD Imaging and Processing/Deep Sky
Central AmericaPosted By Roland Christen |
Lots of nice detail in your image.
Rolando
Rolando
August 23, 2011 10:50 PM
Forum:
Mounts
Alt/Az mounts for astrophotography?Posted By Roland Christen |
Are we anywhere near a time when alt/az mounts will have steppers fine enough for astrophotography?
With an Alt-Az mount, the image continually rotates during the exposure, so your stars will be little streaks if you expose for more than a few seconds. This is bad because for a lot of objects of interest, the delicious detail doesn't really come out until you expose for 3 - 4 hours, even with the most sensitive chip.
The other drawback is that the place where you get the best seeing and darkest sky is usually at or near the zenith, and that is exactly where an Alt-Az has the worst time trying to keep up with the rapidly rotating image.
An equatorial mount solves all those problems. It is essentially stationary with respect to the stars as the earth spins beneath it.
Rolando
With an Alt-Az mount, the image continually rotates during the exposure, so your stars will be little streaks if you expose for more than a few seconds. This is bad because for a lot of objects of interest, the delicious detail doesn't really come out until you expose for 3 - 4 hours, even with the most sensitive chip.
The other drawback is that the place where you get the best seeing and darkest sky is usually at or near the zenith, and that is exactly where an Alt-Az has the worst time trying to keep up with the rapidly rotating image.
An equatorial mount solves all those problems. It is essentially stationary with respect to the stars as the earth spins beneath it.
Rolando
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