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ASTRO: Stephans Quintet
this is red and green data combined together to make a mono image
just getting started on this total of about 5 hours of data (3H green and 2H red) the seeing was pretty good but the breeze continues to be an issue for the big cass |
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ASTRO: Stephans Quintet
On 8/16/2010 10:02 AM, Richard Crisp wrote:
this is red and green data combined together to make a mono image just getting started on this total of about 5 hours of data (3H green and 2H red) the seeing was pretty good but the breeze continues to be an issue for the big cass I take it the wind caused you to start with the color channels first. Nice start in any case. Now that my seeing has improved this is one I need to revisit. Last year has seen far better seeing than I had originally as the jet stream has decided to spend more time south of me instead of overhead. You need some walls around you. My tube is shorter of course but solid. I can get good results in winds up to 30 mph. Over that debris from trees can blow in and do damage so I shut down but not because the scope is bouncing around. I have walls that prevent imaging below about 15 degrees above the horizon but seeing is so bad and atmosphere blocks so much light I can't even go that low so not a problem and the walls do prevent wind problems. Good insulation helps so they don't get warm in the sun then create seeing problems all night as they cool down again. 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". |
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ASTRO: Stephans Quintet
Richard,
now that looks promising. If the colour channels look that good I hope the luminance will match them. Stefan "Richard Crisp" schrieb im Newsbeitrag ... this is red and green data combined together to make a mono image just getting started on this total of about 5 hours of data (3H green and 2H red) the seeing was pretty good but the breeze continues to be an issue for the big cass |
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ASTRO: Stephans Quintet
"Rick Johnson" wrote in message . com... On 8/16/2010 10:02 AM, Richard Crisp wrote: this is red and green data combined together to make a mono image just getting started on this total of about 5 hours of data (3H green and 2H red) the seeing was pretty good but the breeze continues to be an issue for the big cass I take it the wind caused you to start with the color channels first. Nice start in any case. Actually there's a different reason why I did color first. I don't have a clear filter in my wheel, I have an empty slot instead because of that I need to adjust my guide camera to compensate for the no filter to have it in focus instead of dealing with crescent stars... so it was easier to just shoot RGB instead of LRGB I agree with you about needing a shield for the wind. This weekend the wife and I discussed where I may place my observatory and the five trees that need to be felled.... she's OK with the program! Now that my seeing has improved this is one I need to revisit. Last year has seen far better seeing than I had originally as the jet stream has decided to spend more time south of me instead of overhead. You need some walls around you. My tube is shorter of course but solid. I can get good results in winds up to 30 mph. Over that debris from trees can blow in and do damage so I shut down but not because the scope is bouncing around. I have walls that prevent imaging below about 15 degrees above the horizon but seeing is so bad and atmosphere blocks so much light I can't even go that low so not a problem and the walls do prevent wind problems. Good insulation helps so they don't get warm in the sun then create seeing problems all night as they cool down again. 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". |
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ASTRO: Stephans Quintet
Thanks Stefan
I am not sure if I will shoot luminance or not but the seeing is the key factor and the wind the seeing looks like it runs good quite often the wind is luck of the draw though "Stefan Lilge" wrote in message news:w6iao.46456$KP3.38407@hurricane... Richard, now that looks promising. If the colour channels look that good I hope the luminance will match them. Stefan "Richard Crisp" schrieb im Newsbeitrag ... this is red and green data combined together to make a mono image just getting started on this total of about 5 hours of data (3H green and 2H red) the seeing was pretty good but the breeze continues to be an issue for the big cass |
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