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christurner
super member
Reged: 06/24/08
Posts: 179
Loc: Nova Scotia, Canada
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Hello everyone out there. I want to get a meade focal reducer3.3 for my lx200 12 acf because I want to image reasonably well with my DSI II Color camera. Do I need any other peices to maeke this configuration work. I would hate to order it and find out I'm lacking another part that would be required to put the package together. Any help would be greatly appreciated. Cheers for now... It's snowing! Yipppeeee....
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Chris and Family
Nova Scotia, Canada
Dark Sky Country
www.spatialenergistics.com
Platforms:
Meade LX200 ACF 12"
newstar 5.1" reflector
26mm plossl meade
13mm Ethos
Kendrick Digi10 Dew System
T1i Canon Rebel EOS
Lumicon 2" UHC filter
3 Bay SkyPod
A wife that understands!
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brianb11213
Post Laureate
Reged: 02/25/09
Posts: 3278
Loc: 55.215N 6.554W
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The 0.33x focal reducer needs to be the correct distance from the sensor to work properly ... IIRC it's about 85mm from the rear face of the reducer to get 0.33x. The sensor will be some distance behind the flange but this is variable. If you make the seperation too big, the compression will be more than 3x, with unfortunate effects (distortion & vignetting), in severe cases you may not even be able to get to focus. Less seperation, you get less compression, removing about 30mm of the seperation makes the device work at 0.5x, this is usually quite satisfactory.
You may want to equip yourself with a set of extension tubes so as to be able to vary the extension to suit your camera. T2 threaded is best if that's what your camera uses ... if it's a 1.25" push-in "eyepiece replacement" type fitting, then you will have to screw a visual back onto the focal reducer threads, this is less satisfactory in terms of rigidity & keeping the sensor perpendicular to the optical axis.
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Joe Lalumia
Post Laureate
Reged: 01/24/07
Posts: 4132
Loc: Rockwall, Texas, USA
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My astro-buddy Terry Belia has pictures of his camera rig with instructions on his web site here:
http://www.astrotx.com/
http://www.astrotx.com/Focal%20Reducer%20Assembly%20Image.JPG
setup picture
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LX90 8" LNT, SV Nighthawk & TelePOD, ETX 90, Orion XT10i, SV 80/9d, 20x80 binoculars www.texasastro.org
"The secret to creativity is knowing how to hide your sources." - Albert Einstein
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christurner
super member
Reged: 06/24/08
Posts: 179
Loc: Nova Scotia, Canada
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Thanks guys, lots to consider. Cool pics of his setup Joe!
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Chris and Family
Nova Scotia, Canada
Dark Sky Country
www.spatialenergistics.com
Platforms:
Meade LX200 ACF 12"
newstar 5.1" reflector
26mm plossl meade
13mm Ethos
Kendrick Digi10 Dew System
T1i Canon Rebel EOS
Lumicon 2" UHC filter
3 Bay SkyPod
A wife that understands!
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Audiologist
member
Reged: 07/03/07
Posts: 91
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The answer to your question is always YES. 
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wrather1
AstroBear
Reged: 10/25/05
Posts: 4158
Loc: Dallas, Texas
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Ain't THAT the truth... 
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"Don't worry about what telescope you own, or its quality. Just get out under the night sky, and enjoy God's wondrous universe." - T. M. Back
Meade RCX400-12 "Ursa Major"
TMB 130SS + EQ6-PRO "Ursus Polaris"
Orion ED80 "Ursa Minor", WO ZS66ED "grab-'n'-go"
EOS 30D (Hutech), ToUcam Pro, Star Shoot Autoguider, Meade DSI
North Texas Clear Sky Chart
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