ICEINSPACE
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20-12-2006, 04:22 PM
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Registered User
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Join Date: Apr 2006
Location: Warrnambool
Posts: 12,803
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Trying my hand at Webcam Imaging
Hi all
The next clear night i'm going to try some Webcam work on Saturn.
I have the Phillips 840k, unmodded.
Now iv'e never done this before so i would like to ask this...... 
Do i use the 12" SCT or the ED80, and do i go prime focus, or use 26mm EP, or 2x Barlow, or both in either scope.
Or is there a better combination. 
I understand Mike is right up there with this, so Mike 
Thank You.
Cheers Leon 
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20-12-2006, 04:29 PM
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Whats visual Astronomy
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Join Date: Dec 2004
Location: Brisbane
Posts: 5,062
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Go prime focus with the SCT Leon.
The ED80 is too short a focal length for imaging planets.
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20-12-2006, 04:30 PM
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6000 post club member
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Join Date: Oct 2005
Location: Launceston, Australia
Posts: 6,570
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Quote:
Originally Posted by leon
I understand Mike is right up there with this, so Mike
Thank You.
Cheers Leon |
OK... no-one else other than Mike answer dear old leon's questions 
Last edited by matt; 20-12-2006 at 04:40 PM.
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20-12-2006, 04:43 PM
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~Dust bunny breeder~
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Join Date: Nov 2004
Location: The town of campbells
Posts: 12,359
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ok stop yer yappin astro pooch!  MOOO!
go the 12 inch cause you will get a longer focal length for one and increased aperture for more detail
even if the ed80 could get the same image scale the aperture would hold it back.
oh and prime focus.
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20-12-2006, 04:44 PM
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6000 post club member
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Join Date: Oct 2005
Location: Launceston, Australia
Posts: 6,570
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Yeah.... what cow-boy says
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20-12-2006, 04:47 PM
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Registered User
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Join Date: Apr 2006
Location: Warrnambool
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Sorry Matt,
It wasn't supposed to sound like it did, i'm sure all you guys are equally qualified to answer my questions.
Cheers leon
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20-12-2006, 04:47 PM
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Registered User
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Join Date: Apr 2006
Location: Warrnambool
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Thanks for your info guys, much appreciated.
Cheers Leon
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20-12-2006, 04:51 PM
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6000 post club member
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Join Date: Oct 2005
Location: Launceston, Australia
Posts: 6,570
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Quote:
Originally Posted by leon
Sorry Matt,
It wasn't supposed to sound like it did, i'm sure all you guys are equally qualified to answer my questions.
Cheers leon |
No apology needed, leon.
Just having a lend. Good luck with your imaging and keep asking those questions.
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20-12-2006, 04:55 PM
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~Dust bunny breeder~
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Join Date: Nov 2004
Location: The town of campbells
Posts: 12,359
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the bovine and yapping pup are always happy to help
hey, post your results too. youd be suprised what you can learn fromthe experts when they see your image
another sugestion, i am not sure what fl your scope is but if the seeing can handle it throw a barlow in there too. it will increase your scale further
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20-12-2006, 05:18 PM
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Registered User
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Join Date: Apr 2006
Location: Warrnambool
Posts: 12,803
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Yea Ving i was considering that, if i get any reasonable results, i will post them.
Cheers Leon
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20-12-2006, 05:20 PM
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Registered User
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Join Date: Apr 2006
Location: Warrnambool
Posts: 12,803
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Hey Matt, what's with this dear "OLD" stuff.
Cheers Leon
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20-12-2006, 05:26 PM
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6000 post club member
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Join Date: Oct 2005
Location: Launceston, Australia
Posts: 6,570
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Sorry mate.
Happy 21st!!!!!!!!! 
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20-12-2006, 06:21 PM
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![[1ponders]'s Avatar](../vbiis/customavatars/avatar45_9.gif) |
Retired, damn no pension
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Join Date: Nov 2004
Location: Obi Obi, Qld
Posts: 18,778
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12" + 2X barlow (technically called negative projection, check out this link but substitute the slr for a webcam)
M2CW
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20-12-2006, 06:59 PM
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Registered User
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Join Date: Apr 2006
Location: Warrnambool
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Thanks Paul, looks fairly basic, all i need is the smoke to clear tonight.
Cheers Leon
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20-12-2006, 07:42 PM
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Sir Post a Lot!
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Join Date: Sep 2004
Location: Gosford, NSW, Australia
Posts: 36,799
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Definitely go with the 12", and start with prime focus. The image scale won't be huge, but it's a good start to make sure your tracking is working well.
Once you've had some experience capturing a few avi's, stick in a 2x barlow, 2.5x powermate, 3x barlow, 4x barlow or whatever you've got for increased image scale.
Processing is a whole other story.. read my articles for a bit of help on that and then ask questions!
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21-12-2006, 12:30 AM
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Registered User
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Join Date: Oct 2006
Location: Dublin
Posts: 8
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You should also try imaging the moon as i have found this good practice re focus, centering of image etc
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21-12-2006, 01:36 AM
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The 'DRAGON MAN'
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Join Date: Jan 2005
Location: In the Dark at Snake Valley, Victoria
Posts: 14,412
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Wish I could get over to your place Leon.  Rotten shift work!
We could both Toucam image and learn from each other.
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