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  #1  
Old 25-08-2005, 12:30 PM
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ving (David)
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Question solar viewing.

my thousand islands... NO! ,NO!, oaks polymer solar film arrived today! I held it up and looked at the sun.... beautiful orange image!
very pleased!

no some questions for all you solar viewing vets:
  1. what does one look for?
  2. what tips do you have in general?
  3. is seeing a factor in viewing?
  4. is there a "best time" for viewing?
  5. what sort of exposure time and iso is recomended for pics?

fangs peeps!
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  #2  
Old 25-08-2005, 12:38 PM
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1. the sun
2 never directly look at the sun
3 cloudy days are a bugger!!
4 while the sun is up
5 depends on camera any where from 180 to 90 shutter speed, 125 is usually preetty good.


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Old 25-08-2005, 12:48 PM
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Old 25-08-2005, 12:57 PM
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Sorry Ving but you deserved that! When Paul recovers he may actually comment?
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Old 25-08-2005, 12:58 PM
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Not me Dave. The only time I've looked at the sun was at the Astrofest and when I'm flat on my back at the beach.
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Old 25-08-2005, 01:09 PM
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Quote:
Originally Posted by h0ughy
Sorry Ving but you deserved that! When Paul recovers he may actually comment?
WahAHAQHAHAHAHA!!!

your a funny bugger!
thanks for the tips but you didnt tell me how to actually find the sun
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  #7  
Old 25-08-2005, 01:28 PM
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ving if you can't find the sun in the middle of the day, then I think you're in the wrong hobby

Hint: use the shadow of your dob. When the shadow of the tube is at its smallest and roundest you should be pretty close. REMEMBER: Leave your finderscope lense cover on. Hate to see you get scorch marks on your lawn.
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Old 25-08-2005, 01:30 PM
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Yep no doubt about It ! where in good hands here .


Louie
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Old 25-08-2005, 01:32 PM
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its great been surrounded by so many comedians... i mean professional expert types

oh and plans for a cell to mount it in... a few different types'd be good.
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Old 25-08-2005, 01:34 PM
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Oh and cleaning your primary or secondary won't remove those black spots.

You're welcome
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  #11  
Old 25-08-2005, 01:38 PM
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Sorry David. No more spamming from me. (karma ) While I'm not a vet, I did get to look through jjjnetties and xrekcor film at Astrofest. You will enjoy it. You wont see as many different features as through h0ughy's PST but its still impressive. Yes seeing is definately a factor. I felt that looking throught the PST first thing in the morning was a more stable view than looking through the Baader later in the day. But I felt that transparency wasn't as big an issue. Within reason JMHO from a couple of viewing sessions.
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Old 25-08-2005, 01:41 PM
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Well Paul I beg to differ ! I have found that If I leave my optics dirty I see more spots ! Dave I hope your taking notes here !

Louie
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Old 25-08-2005, 01:42 PM
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Old 25-08-2005, 01:44 PM
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Use the plans on my solar filter page, what other "types" do you need? You just want something that fits snuggly on the end of your scope and won't fall off or blow off in the wind.

And as Paul said, leave your finderscope caps on. And use the shadow of your dob to find it in the eyepiece. Start with your longest FL eyepieces and once the shadow is small start scanning around That's how I do it

Quote:
1. what does one look for?
2. what tips do you have in general?
3. is seeing a factor in viewing?
4. is there a "best time" for viewing?
5. what sort of exposure time and iso is recomended for pics?
1. Sunspots, that's all you can see with white light filters. Use the little sun image in the left bar to see when there's sunspots on the face. They can change hourly or daily though, so there's always something to look at. But we are in a solar minimum so sometimes there'll be weeks without a blemish.

2. Some people use a shade cloth of some sort over their head to block out stray sunlight. It does help, but can get hot under there. Just like lunar viewing, push up the magnification to zoom in on the spots and see more detail.

3. Most definitely, it's no different than viewing the planets or moon. You'll notice the same "swimming" and boiling effect which will reduce the quality and details that you're able to see.

4. Not really, same as lunar/planetary. Low on the horizon, more atmosphere to look through. So generally, the higher the sun the better.

5. Experiment is the best thing, but you won't need a high ISO, 100 will probably be fine, and you might need anything from 1/100 to 1/1000 of a sec exposure. Afocal is just the same as for the moon. Getting focus right is the key, and the hardest part. Especially with webcamming.

HTH
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  #15  
Old 25-08-2005, 01:45 PM
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thanks paul, you would thing the seeing would be better during the middle of the day when the atmospheric temperature is probably most stable?! hmm...
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  #16  
Old 25-08-2005, 01:49 PM
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Also you might want to note that to find the sun it could be a good idea to keep your eyepiece out and move the scope until you see a big orange light, then insert the eyepiece and focus. following on of course from Master Ponders teachings of the ancient art of SunDung, the art of observing spots on the wall of the sun
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  #17  
Old 25-08-2005, 01:53 PM
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It may well be Dave, but it was still around 0 degrees when I saw it, so the air would may still have been pretty stable. Plus I was looking through h0ughy's PST in the morning. I don't know how much the seeing effects that. I do know that when I looked through jjjnettie's in the afternoon there was noticable shimmer and swimming. More so in the 4.5" reflector than in binoculars. If you've got enough film left over consider doing a set of covers for your binoculars. It worked fantastically on jjjnetties little 7/10?x50s
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  #18  
Old 25-08-2005, 01:59 PM
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David H, I found that using the shadow that your scope casts is the easiest way to line up the sun .

Louie
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  #19  
Old 25-08-2005, 02:08 PM
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Quote:
Originally Posted by atalas
David H, I found that using the shadow that your scope casts is the easiest way to line up the sun .

Louie

quite true and I use my method after I get close
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  #20  
Old 25-08-2005, 02:14 PM
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thanks louie and houghy (we need a dewey (oh hang on, thats me (librarian))).
I tries some projection in my olde 60mm using that method to line up. it worked but i ended up melting my ep!!!
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