|
|
Thread Tools | Display Modes |
#1
|
|||
|
|||
ASTRO: an early look see at the Crescent in the tricolor emission line palette
at f/12.6 signal builds slowly. even more so using emission line filters.
even more so when there is moon in a suburban sky but still perseverence is occasionally rewarded. I have quite a ways to go: I have a total of 25 x 20 minutes: a hair more than 8 hours but we are beginning to get some idea of what it might look like in the wavelength ordered palette it was taken at F=5760mm using the 18" classical cassegrain at f/12.6 the camera is the FLI Proline 9000 with Baader Halpha and FLI S2 and O3 filters all subs were 20 minutes |
#2
|
|||
|
|||
ASTRO: an early look see at the Crescent in the tricolor emissionline palette
Looking good Richard!
Richard Crisp wrote: at f/12.6 signal builds slowly. even more so using emission line filters. even more so when there is moon in a suburban sky but still perseverence is occasionally rewarded. I have quite a ways to go: I have a total of 25 x 20 minutes: a hair more than 8 hours but we are beginning to get some idea of what it might look like in the wavelength ordered palette it was taken at F=5760mm using the 18" classical cassegrain at f/12.6 the camera is the FLI Proline 9000 with Baader Halpha and FLI S2 and O3 filters all subs were 20 minutes -- John N. Gretchen III N5JNG NCS304 http://www.tisd.net/~jng3 |
#3
|
|||
|
|||
ASTRO: an early look see at the Crescent in the tricolor emission line palette
Richard,
this image makes me want to retry NGC 6888 too, unfortunately it seems that I always have something else to do when the sky is clear this summer... And for 8 hours of data I'd have find 4 clear nights... Stefan "Richard Crisp" schrieb im Newsbeitrag m... at f/12.6 signal builds slowly. even more so using emission line filters. even more so when there is moon in a suburban sky but still perseverence is occasionally rewarded. I have quite a ways to go: I have a total of 25 x 20 minutes: a hair more than 8 hours but we are beginning to get some idea of what it might look like in the wavelength ordered palette it was taken at F=5760mm using the 18" classical cassegrain at f/12.6 the camera is the FLI Proline 9000 with Baader Halpha and FLI S2 and O3 filters all subs were 20 minutes |
Thread Tools | |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
ASTRO: Quick and dirty test of Baader Emission Line filters at long focal length on Crab | Richard Crisp | Astro Pictures | 7 | December 24th 07 05:33 PM |
ASTRO: Sharpless 2-101 and Van den Berg 142 in emission line filtered light | Richard Crisp | CCD Imaging | 0 | May 31st 04 05:43 PM |
ASTRO: Animation of Crab using Chandra Xray, Radio, Optical and emission line images | Richard Crisp | Astronomy Misc | 7 | January 17th 04 12:30 AM |
ASTRO: Animation of Crab using Chandra Xray, Radio, Optical and emission line images | Richard Crisp | Amateur Astronomy | 24 | January 17th 04 12:30 AM |
ASTRO: Animation of Crab using Chandra Xray, Radio, Optical and emission line images | Richard Crisp | CCD Imaging | 7 | January 17th 04 12:30 AM |